🧑🎓 通过渐进式表达式挑战掌握数据访问技术
高级
这是一个Engineering领域的自动化工作流，包含 62 个节点。主要使用 If, Set, Html, StopAndError, ManualTrigger 等节点。 🧑🎓 通过渐进式表达式挑战掌握数据访问技术
前置要求
- •无特殊前置要求，导入即可使用
分类
工作流预览
可视化展示节点连接关系，支持缩放和平移
导出工作流
复制以下 JSON 配置到 n8n 导入，即可使用此工作流
{
"meta": {
"creator": "Lucas Peyrin",
"instanceId": "e409ea34548a2afe2dffba31130cd1cf2e98ebe2afaeed2a63caf2a0582d1da0",
"fingerprint": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJjcmVhdG9yIjoiIiwiaXNzIjoibjhuIiwiaWF0IjoxNzUzMTEwMjM2fQ.t3z4zUz-Pb_rTMjOtIYZmw6lxa8lkLZQXrrdDdkADNo"
},
"nodes": [
{
"id": "c769722e-d2f2-42cf-9bc2-b13018b93b8a",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "便签13",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
-400,
-112
],
"parameters": {
"width": 460,
"height": 552,
"content": "## 表达式知识测试"
},
"typeVersion": 1
},
{
"id": "1881550a-caa1-4e9d-9399-153356d89eb0",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "开始测试！",
"type": "n8n-nodes-base.manualTrigger",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
-144,
240
],
"parameters": {},
"typeVersion": 1
},
{
"id": "7af9ab86-755f-4ed5-89f3-2f945f19d5f3",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "源数据",
"type": "n8n-nodes-base.set",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
176,
240
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "12345",
"name": "name",
"type": "string",
"value": "Clark Kent"
},
{
"id": "67890",
"name": "city",
"type": "string",
"value": "Metropolis"
},
{
"id": "abcde",
"name": "level",
"type": "number",
"value": 99
},
{
"id": "fghij",
"name": "tools",
"type": "array",
"value": "[\"Typewriter\",\"Glasses\",\"n8n\"]"
},
{
"id": "klmno",
"name": "address",
"type": "object",
"value": "{\"street\":\"123 Main St\",\"zip\":\"10001\"}"
},
{
"id": "pqrst",
"name": "tasks",
"type": "array",
"value": "[{\"name\":\"Write Article\",\"status\":\"Done\"},{\"name\":\"Review PR\",\"status\":\"Pending\"},{\"name\":\"Save the World\",\"status\":\"Pending\"}]"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "04defff0-a2b6-4a05-8de4-160fc2857545",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "说明 - 基础访问",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
400,
16
],
"parameters": {
"color": 6,
"width": 300,
"height": 428,
"content": "### 步骤 1：基础访问"
},
"typeVersion": 1
},
{
"id": "53f27214-cdef-45be-ad71-c60f96c0f7f0",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "测试 - 基础访问",
"type": "n8n-nodes-base.set",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
496,
240
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "e87952cb-878e-4feb-8261-342eaf887838",
"name": "user_city",
"type": "string",
"value": "="
}
]
}
},
"typeVersion": 3.4
},
{
"id": "fd464cfd-3ff0-4f64-90bb-dd086a2e7b2c",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "检查 - 基础访问",
"type": "n8n-nodes-base.if",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
752,
240
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "5ac1af5c-2769-42f8-9df7-ec092d2fec05",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.user_city }}",
"rightValue": "={{ $('Source Data').last().json.city }}"
},
{
"id": "d4f115a2-6713-4beb-8b4e-4371686ca6ea",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
},
"leftValue": "={{ !$('Test - Basic Access').isExecuted || $('Test - Basic Access').params.assignments.assignments[0].value.includes('.city') }}",
"rightValue": "{{ $json.city }}"
}
]
}
},
"typeVersion": 2.2
},
{
"id": "7df3c072-a908-498e-9034-13a7e03a4703",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "成功 - 基础访问",
"type": "n8n-nodes-base.noOp",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
992,
128
],
"parameters": {},
"typeVersion": 1
},
{
"id": "6e087d88-3c5d-454e-81ac-5aec12514edb",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "错误 - 基础访问",
"type": "n8n-nodes-base.stopAndError",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
992,
448
],
"parameters": {
"errorMessage": "Incorrect. Hint: Use the format `{{ $('Source Data').item.json.city }}` to get the city value."
},
"typeVersion": 1
},
{
"id": "fa74e360-5b85-4fe0-9c65-547a5d788642",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "说明 - 数组访问",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
1216,
16
],
"parameters": {
"color": 6,
"width": 300,
"height": 428,
"content": "### 步骤 2：数组访问"
},
"typeVersion": 1
},
{
"id": "33fc1900-e793-4c4f-8d66-849be1ebee89",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "测试 - 数组访问",
"type": "n8n-nodes-base.set",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
1312,
240
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "e87952cb-878e-4feb-8261-342eaf887838",
"name": "third_tool",
"type": "string",
"value": "="
}
]
}
},
"typeVersion": 3.4
},
{
"id": "59622f54-9685-4115-bad0-3dcde79b0e76",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "检查 - 数组访问",
"type": "n8n-nodes-base.if",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
1568,
240
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "5ac1af5c-2769-42f8-9df7-ec092d2fec05",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.third_tool }}",
"rightValue": "={{ $('Source Data').item.json.tools[2] }}"
},
{
"id": "193a01cb-64c3-456a-bee4-4febaae63e66",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
},
"leftValue": "={{ !$('Test - Array Access').isExecuted || $('Test - Array Access').params.assignments.assignments[0].value.includes('.tools') }}",
"rightValue": ""
}
]
}
},
"typeVersion": 2.2
},
{
"id": "516d40d3-3ec9-42ff-993e-0965695d1c63",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "成功 - 数组访问",
"type": "n8n-nodes-base.noOp",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
1808,
128
],
"parameters": {},
"typeVersion": 1
},
{
"id": "823aa93b-3e0c-4bb4-a3fd-5d960c14d8b4",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "错误 - 数组访问",
"type": "n8n-nodes-base.stopAndError",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
1808,
448
],
"parameters": {
"errorMessage": "Incorrect. Hint: Remember that arrays are zero-indexed. The third item is at index `[2]`."
},
"typeVersion": 1
},
{
"id": "5c7f181c-3ebd-41e7-8012-bf26a7e724b6",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "说明 - 嵌套对象",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
2032,
16
],
"parameters": {
"color": 6,
"width": 300,
"height": 428,
"content": "### 步骤 3：嵌套对象"
},
"typeVersion": 1
},
{
"id": "6c8d3b1d-4e67-4bf7-9d52-7c37c2a52ec3",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "测试 - 嵌套对象",
"type": "n8n-nodes-base.set",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
2128,
240
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "e87952cb-878e-4feb-8261-342eaf887838",
"name": "street_address",
"type": "string",
"value": "="
}
]
}
},
"typeVersion": 3.4
},
{
"id": "188028b2-01df-46ed-9977-ef9dcb6cb9ae",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "检查 - 嵌套对象",
"type": "n8n-nodes-base.if",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
2384,
240
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "d4e5f6a7-8901-2345-6789-0abcdef12345",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.street_address }}",
"rightValue": "={{ $('Source Data').item.json.address.street }}"
},
{
"id": "b84f01c8-0b9f-4dd5-a983-e7455fafe1ce",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
},
"leftValue": "={{ !$('Test - Nested Object').isExecuted || $('Test - Nested Object').params.assignments.assignments[0].value.includes('.address.street') }}",
"rightValue": ""
}
]
}
},
"typeVersion": 2.2
},
{
"id": "ebe135cb-b246-4868-ad97-6bf20c43f3e0",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "成功 - 嵌套对象",
"type": "n8n-nodes-base.noOp",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
2624,
128
],
"parameters": {},
"typeVersion": 1
},
{
"id": "d1312875-9ecc-48db-81aa-14b189e4bd9c",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "错误 - 嵌套对象",
"type": "n8n-nodes-base.stopAndError",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
2624,
448
],
"parameters": {
"errorMessage": "Incorrect. Hint: Chain the keys using dots, like `...json.address.street`."
},
"typeVersion": 1
},
{
"id": "946cf25f-706d-4d05-aeaa-028e3a229856",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "说明 - 对象数组",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
2848,
16
],
"parameters": {
"color": 6,
"width": 300,
"height": 428,
"content": "### 步骤 4：对象数组"
},
"typeVersion": 1
},
{
"id": "de975fc2-c145-4d5c-8426-03e5ce702846",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "测试 - 对象数组",
"type": "n8n-nodes-base.set",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
2944,
240
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "e87952cb-878e-4feb-8261-342eaf887838",
"name": "second_task_name",
"type": "string",
"value": "="
}
]
}
},
"typeVersion": 3.4
},
{
"id": "0ab0b02e-60a3-4d7f-83d0-6516b479e08d",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "检查 - 对象数组",
"type": "n8n-nodes-base.if",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
3200,
240
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "e1234567-890a-bcde-f123-456789012345",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.second_task_name }}",
"rightValue": "={{ $('Source Data').item.json.tasks[1].name }}"
},
{
"id": "8ea84d9f-102e-44aa-b87d-96fc413af915",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
},
"leftValue": "={{ !$('Test - Array of Objects').isExecuted || $('Test - Array of Objects').params.assignments.assignments[0].value.includes('.tasks') }}",
"rightValue": ""
}
]
}
},
"typeVersion": 2.2
},
{
"id": "5db2abba-a971-4920-af0c-db95b4d8a1e2",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "成功 - 对象数组",
"type": "n8n-nodes-base.noOp",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
3440,
128
],
"parameters": {},
"typeVersion": 1
},
{
"id": "5aab74e4-7bb8-4678-b6d3-1e00a7a22342",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "错误 - 对象数组",
"type": "n8n-nodes-base.stopAndError",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
3440,
448
],
"parameters": {
"errorMessage": "Incorrect. Hint: Combine array access `[1]` with object access `.name`."
},
"typeVersion": 1
},
{
"id": "e98182bb-d555-48e0-9126-ca0590e2c424",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "说明 - JS 函数",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
3664,
16
],
"parameters": {
"color": 6,
"width": 300,
"height": 412,
"content": "### 步骤 5：JS 函数"
},
"typeVersion": 1
},
{
"id": "06f1e85c-f4e5-4e49-b678-22bb189421c0",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "测试 - JS 函数",
"type": "n8n-nodes-base.set",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
3760,
240
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "e87952cb-878e-4feb-8261-342eaf887838",
"name": "uppercase_name",
"type": "string",
"value": "="
}
]
}
},
"typeVersion": 3.4
},
{
"id": "c485b7a3-5b91-4935-b9b6-3440c8e8a241",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "检查 -",
"type": "n8n-nodes-base.if",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
4016,
240
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "b0123456-7890-abcd-ef12-345678901234",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.uppercase_name }}",
"rightValue": "={{ $('Source Data').item.json.name.toUpperCase() }}"
},
{
"id": "7c1238db-4849-4525-b293-4f453b70fa21",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
},
"leftValue": "={{ !$('Test - JS Function').isExecuted || $('Test - JS Function').params.assignments.assignments[0].value.includes('.toUpperCase()') }}",
"rightValue": "={{ !$('Test - Array of Objects').isExecuted || $('Test - Array of Objects').params.assignments.assignments[0].value.includes('.tasks') }}"
}
]
}
},
"typeVersion": 2.2
},
{
"id": "be45ea18-23db-407e-a886-a7aeef79c5ee",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Success - JS Function",
"type": "n8n-nodes-base.noOp",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
4256,
128
],
"parameters": {},
"typeVersion": 1
},
{
"id": "b56c667a-5818-49de-b042-0d2655f7bea2",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Error - JS Function",
"type": "n8n-nodes-base.stopAndError",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
4256,
448
],
"parameters": {
"errorMessage": "Incorrect. Hint: Add `.toUpperCase()` to the end of your expression, inside the `{{ }}`."
},
"typeVersion": 1
},
{
"id": "4151ae3d-4b4c-4d4a-b5b7-b5de5288fd9a",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Instruction - Final",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
4480,
-48
],
"parameters": {
"color": 6,
"width": 300,
"height": 476,
"content": "### Final Challenge!\n\nModify the **\"Test - Final\"** node.\n\n**Task:** Create a field `summary`. Its value should be a single string that reads:\n`The status of task 'Review PR' is Pending.`\n\nYou'll need to combine static text with expressions."
},
"typeVersion": 1
},
{
"id": "3d990a6c-c598-4847-b89a-8eb158db4d21",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Test - Final",
"type": "n8n-nodes-base.set",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
4576,
240
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "e87952cb-878e-4feb-8261-342eaf887838",
"name": "summary",
"type": "string",
"value": "="
}
]
}
},
"typeVersion": 3.4
},
{
"id": "d81171ab-97ac-4b14-bdae-1a7479ae2e31",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Check - Final",
"type": "n8n-nodes-base.if",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
4832,
240
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "a1234567-890a-bcde-f123-456789012345",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.summary }}",
"rightValue": "=The status of task '{{ $('Source Data').item.json.tasks[1].name }}' is {{ $('Source Data').item.json.tasks[1].status }}."
},
{
"id": "18e1e8e4-0539-4c4f-85fe-1fa8759717ad",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
},
"leftValue": "={{ !$('Test - Final').isExecuted || ($('Test - Final').params.assignments.assignments[0].value.includes('.name') && $('Test - Final').params.assignments.assignments[0].value.includes('.status')) }}",
"rightValue": ""
}
]
}
},
"typeVersion": 2.2
},
{
"id": "e8e56a4a-0c20-42ce-91bc-120be38067ba",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Success - Final",
"type": "n8n-nodes-base.noOp",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
5072,
112
],
"parameters": {},
"typeVersion": 1
},
{
"id": "b1ea5a88-8acc-4e46-8998-162c2e01e995",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Error - Final",
"type": "n8n-nodes-base.stopAndError",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
5072,
448
],
"parameters": {
"errorMessage": "Incorrect. Hint: Combine static text and expressions like this: `Some text '{{ expression1 }}' and '{{ expression2 }}`."
},
"typeVersion": 1
},
{
"id": "4e2a56ad-59fd-40af-82cc-ce2e64478a69",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "🎉 SUCCESS 🎉",
"type": "n8n-nodes-base.html",
"notes": "Well done! You're awesome\n\n© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
5424,
224
],
"parameters": {
"html": "<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n <meta charset=\"UTF-8\">\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n <title>Success</title>\n</head>\n<body style=\"margin: 0; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background-color: #f0f2f5; display: flex; align-items: center; justify-content: center; height: 100vh;\">\n\n <!-- The main success card -->\n <div style=\"background-color: #ffffff; padding: 40px 50px; border-radius: 12px; box-shadow: 0 5px 25px rgba(0, 0, 0, 0.1); text-align: center; max-width: 400px; margin: 20px;\">\n\n <!-- Circular Green Checkmark -->\n <div style=\"width: 100px; height: 100px; background-color: #28a745; border-radius: 50%; margin: 0 auto 25px auto; display: flex; align-items: center; justify-content: center;\">\n <span style=\"color: white; font-size: 60px; line-height: 1;\">✔</span>\n </div>\n\n <!-- Main Text -->\n <h1 style=\"font-size: 36px; font-weight: 600; color: #333; margin: 0 0 10px 0;\">\n Success!\n </h1>\n\n <!-- Call to Action Text & Link -->\n <p style=\"font-size: 16px; color: #555; line-height: 1.5; margin: 0;\">\n You've mastered n8n expressions!\n </p>\n <p style=\"font-size: 16px; color: #555; line-height: 1.5; margin: 0;\">\n <a href=\"https://n8n.io/creators/lucaspeyrin\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color: #007bff; text-decoration: none; font-weight: 500;\">Check out more templates</a>.\n </p>\n\n </div>\n\n</body>\n</html>"
},
"notesInFlow": true,
"typeVersion": 1.2
},
{
"id": "d9efe1c3-e838-46f9-91bf-074ea6dde9ff",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Instruction - Basic Access1",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
80,
128
],
"parameters": {
"color": 6,
"width": 300,
"height": 316,
"content": ""
},
"typeVersion": 1
},
{
"id": "a5a89905-5c09-454e-9244-cec5233f6483",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Answer - Basic Access",
"type": "n8n-nodes-base.set",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
496,
608
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "e87952cb-878e-4feb-8261-342eaf887838",
"name": "user_city",
"type": "string",
"value": "={{ $('Source Data').item.json.city }}"
},
{
"id": "28ef996b-d7e7-4d29-b4b5-f245de00d2c0",
"name": "other_solution",
"type": "string",
"value": "={{ $json.city }}"
}
]
}
},
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},
{
"id": "41d01828-1e14-4b3d-9f11-09493d6cb486",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Answer Note - Basic Access",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
400,
464
],
"parameters": {
"color": 7,
"width": 304,
"height": 320,
"content": "💡 **Answer Key**\n\nThis node contains the correct expression for the **Basic Access** step. You can use it as a reference if you get stuck."
},
"typeVersion": 1
},
{
"id": "923f04a6-4593-48df-981e-58ab0a8d9779",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Feedback Correct1",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
928,
0
],
"parameters": {
"color": 7,
"height": 272,
"content": "✅ **Correct!**\n\nGreat start. Let's access an array next."
},
"typeVersion": 1
},
{
"id": "4afc256b-88b6-47b2-b105-2b419f18b3f0",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Feedback Incorrect1",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
928,
288
],
"parameters": {
"color": 7,
"height": 320,
"content": "❌ **Incorrect.**\n\n**Hint:** Use the format\n`{{ $('Source Data').item.json.city }}`\nto get the city value."
},
"typeVersion": 1
},
{
"id": "37b4dc1e-2588-4243-b0d6-70e5956575f7",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Answer - Array Access",
"type": "n8n-nodes-base.set",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
1312,
608
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "e87952cb-878e-4feb-8261-342eaf887838",
"name": "third_tool",
"type": "string",
"value": "={{ $('Source Data').item.json.tools[2] }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "2bbd9ac7-4acc-41b0-9511-0929e961b56a",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Answer Note - Array Access",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
1216,
464
],
"parameters": {
"color": 7,
"width": 304,
"height": 320,
"content": "💡 **Answer Key**\n\nThis node contains the correct expression for the **Array Access** step. You can use it as a reference if you get stuck."
},
"typeVersion": 1
},
{
"id": "399cccd8-ff46-49ca-8294-5a9f7484aa47",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Feedback Correct2",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
1728,
0
],
"parameters": {
"color": 7,
"width": 256,
"height": 272,
"content": "✅ **Correct!**\n\nPerfect. Now for nested data."
},
"typeVersion": 1
},
{
"id": "ff5db2b3-6f5d-42d8-afc1-f79dcd551ce3",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Feedback Incorrect2",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
1728,
288
],
"parameters": {
"color": 7,
"width": 256,
"height": 320,
"content": "❌ **Incorrect.**\n\n**Hint:** Remember that arrays are zero-indexed. The third item is at index `[2]`."
},
"typeVersion": 1
},
{
"id": "0cf6b471-7c91-4576-9a04-31bd99553aed",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Answer - Nested Object",
"type": "n8n-nodes-base.set",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
2128,
608
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "e87952cb-878e-4feb-8261-342eaf887838",
"name": "street_address",
"type": "string",
"value": "={{ $('Source Data').item.json.address.street }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "75b741f5-8eab-400c-8a8a-b35ed5f1e930",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Answer Note - Nested Object",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
2032,
464
],
"parameters": {
"color": 7,
"width": 304,
"height": 320,
"content": "💡 **Answer Key**\n\nThis node contains the correct expression for the **Nested Object** step. You can use it as a reference if you get stuck."
},
"typeVersion": 1
},
{
"id": "6b39c109-465c-474e-afe7-bfc00181e5a3",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Feedback Correct3",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
2544,
0
],
"parameters": {
"color": 7,
"width": 256,
"height": 272,
"content": "✅ **Correct!**\n\nExcellent. Let's combine arrays and objects."
},
"typeVersion": 1
},
{
"id": "8836d90a-8aef-4c18-8fc3-156a7342689b",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Feedback Incorrect3",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
2544,
288
],
"parameters": {
"color": 7,
"width": 256,
"height": 320,
"content": "❌ **Incorrect.**\n\n**Hint:** Chain the keys using dots, like `...json.address.street`."
},
"typeVersion": 1
},
{
"id": "13c9a37f-9cc1-4ec3-b04f-1c8ccb4ed400",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Answer - Array of Objects",
"type": "n8n-nodes-base.set",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
2944,
608
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "e87952cb-878e-4feb-8261-342eaf887838",
"name": "second_task_name",
"type": "string",
"value": "={{ $('Source Data').item.json.tasks[1].name }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "4021f70b-f8fc-4856-a8a9-32886a39075b",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Answer Note - Array of Objects",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
2848,
464
],
"parameters": {
"color": 7,
"width": 304,
"height": 320,
"content": "💡 **Answer Key**\n\nThis node contains the correct expression for the **Array of Objects** step. You can use it as a reference if you get stuck."
},
"typeVersion": 1
},
{
"id": "f1db5c03-4676-4f7f-b6d3-84e9d09ef886",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Feedback Correct4",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
3360,
0
],
"parameters": {
"color": 7,
"width": 256,
"height": 272,
"content": "✅ **Correct!**\n\nYou're getting the hang of this. Time for some JavaScript magic."
},
"typeVersion": 1
},
{
"id": "76578357-6c68-4144-a8a4-4d64f121aa01",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Feedback Incorrect4",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
3360,
288
],
"parameters": {
"color": 7,
"width": 256,
"height": 320,
"content": "❌ **Incorrect.**\n\n**Hint:** Combine array access `[1]` with object access `.name`."
},
"typeVersion": 1
},
{
"id": "794be646-6a3e-4b8d-a941-90d621dca210",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Answer - JS Function",
"type": "n8n-nodes-base.set",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
3760,
592
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "e87952cb-878e-4feb-8261-342eaf887838",
"name": "uppercase_name",
"type": "string",
"value": "={{ $('Source Data').item.json.name.toUpperCase() }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "5beb208e-4c0c-4d73-8ace-daacbf00a245",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Answer Note - JS Function",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
3664,
448
],
"parameters": {
"color": 7,
"width": 304,
"height": 336,
"content": "💡 **Answer Key**\n\nThis node contains the correct expression for the **JS Function** step. You can use it as a reference if you get stuck."
},
"typeVersion": 1
},
{
"id": "3492291f-d171-418f-9dd5-40fbd766acbd",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Feedback Correct5",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
4176,
0
],
"parameters": {
"color": 7,
"width": 256,
"height": 272,
"content": "✅ **Correct!**\n\nAwesome! One final challenge to bring it all together."
},
"typeVersion": 1
},
{
"id": "d54f48f8-7924-4444-b840-6a3a2ea5f5c9",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Feedback Incorrect5",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
4176,
288
],
"parameters": {
"color": 7,
"width": 256,
"height": 320,
"content": "❌ **Incorrect.**\n\n**Hint:** Add `.toUpperCase()` to the end of your expression, inside the `{{ }}`."
},
"typeVersion": 1
},
{
"id": "550c88b1-4e26-4fb5-a0b3-cfcf649b595e",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Answer - Final",
"type": "n8n-nodes-base.set",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
4576,
592
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "e87952cb-878e-4feb-8261-342eaf887838",
"name": "summary",
"type": "string",
"value": "=The status of task '{{ $('Source Data').item.json.tasks[1].name }}' is {{ $('Source Data').item.json.tasks[1].status }}."
}
]
}
},
"typeVersion": 3.4
},
{
"id": "edb83bc9-25ed-488d-ab71-dd77103d874b",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Answer Note - Final",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
4480,
448
],
"parameters": {
"color": 7,
"width": 304,
"height": 336,
"content": "💡 **Answer Key**\n\nThis node contains the correct expression for the **Final** step. You can use it as a reference if you get stuck."
},
"typeVersion": 1
},
{
"id": "7a36c242-d76e-4675-8411-a24506e090c8",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Feedback Correct6",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
4992,
32
],
"parameters": {
"color": 7,
"width": 256,
"height": 240,
"content": "✅ **YOU DID IT!**"
},
"typeVersion": 1
},
{
"id": "d5a3c589-35f8-49be-a27b-6a82198438bc",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Feedback Incorrect6",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
4992,
288
],
"parameters": {
"color": 7,
"width": 256,
"height": 320,
"content": "❌ **Incorrect.**\n\n**Hint:** Combine static text and expressions like this:\n`Some text '{{ expression1 }}' and {{ expression2 }}`."
},
"typeVersion": 1
},
{
"id": "30003316-86b3-434e-844c-f67b0722f2e0",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "Congratulations!",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
5264,
32
],
"parameters": {
"color": 4,
"width": 416,
"height": 576,
"content": "🎉 **Congratulations! You've passed the test!**\n\nYou have successfully demonstrated your understanding of all the basic JSON data types.\n\nYou are now ready to work with data in n8n.\n\n-- Well done! --"
},
"typeVersion": 1
},
{
"id": "960695a0-b8db-4346-8566-7e5d4feb6571",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "便签10",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
5712,
-384
],
"parameters": {
"color": 3,
"width": 540,
"height": 1280,
"content": "## Was this helpful? Let me know!\n[](https://n8n.ac)\n\nI really hope this test helped you check your Expressions understanding fully. Your feedback is incredibly valuable and helps me create better resources for the n8n community.\n\n### **Share Your Thoughts & Ideas**\n\nWhether you have a suggestion, found a typo, or just want to say thanks, I'd love to hear from you!\nHere's a simple n8n form built for this purpose:\n\n#### ➡️ **[Click here to give feedback](https://api.ia2s.app/form/templates/feedback?template=Expressions%20Test)**\n\n### **Ready to Build Something Great?**\n\nIf you're looking to take your n8n skills or business automation to the next level, I can help.\n\n**🎓 n8n Coaching:** Want to become an n8n pro? I offer one-on-one coaching sessions to help you master workflows, tackle specific problems, and build with confidence.\n#### ➡️ **[Book a Coaching Session](https://api.ia2s.app/form/templates/coaching?template=Expressions%20Test)**\n\n**💼 n8n Consulting:** Have a complex project, an integration challenge, or need a custom workflow built for your business? Let's work together to create a powerful automation solution.\n#### ➡️ **[Inquire About Consulting Services](https://api.ia2s.app/form/templates/consulting?template=Expressions%20Test)**\n\n---\n\nHappy Automating!\nLucas Peyrin | [n8n Academy](https://n8n.ac)"
},
"typeVersion": 1
},
{
"id": "d3a6fe0a-3670-40c2-bcb8-4a75e5721abe",
"cid": "Ikx1Y2FzIFBleXJpbiI",
"name": "便签16",
"type": "n8n-nodes-base.stickyNote",
"notes": "© 2025 Lucas Peyrin",
"creator": "Lucas Peyrin",
"position": [
5344,
384
],
"parameters": {
"color": 4,
"width": 272,
"height": 184,
"content": "[](https://n8n.io/creators/lucaspeyrin)"
},
"typeVersion": 1
}
],
"pinData": {},
"connections": {
"Source Data": {
"main": [
[
{
"node": "Test - Basic Access",
"type": "main",
"index": 0
}
]
]
},
"Start Test!": {
"main": [
[
{
"node": "Source Data",
"type": "main",
"index": 0
}
]
]
},
"Test - Final": {
"main": [
[
{
"node": "Check - Final",
"type": "main",
"index": 0
}
]
]
},
"Check - Final": {
"main": [
[
{
"node": "Success - Final",
"type": "main",
"index": 0
}
],
[
{
"node": "Error - Final",
"type": "main",
"index": 0
}
]
]
},
"Success - Final": {
"main": [
[
{
"node": "🎉 SUCCESS 🎉",
"type": "main",
"index": 0
}
]
]
},
"Test - JS Function": {
"main": [
[
{
"node": "Check - JS Function",
"type": "main",
"index": 0
}
]
]
},
"Check - JS Function": {
"main": [
[
{
"node": "Success - JS Function",
"type": "main",
"index": 0
}
],
[
{
"node": "Error - JS Function",
"type": "main",
"index": 0
}
]
]
},
"Test - Array Access": {
"main": [
[
{
"node": "Check - Array Access",
"type": "main",
"index": 0
}
]
]
},
"Test - Basic Access": {
"main": [
[
{
"node": "Check - Basic Access",
"type": "main",
"index": 0
}
]
]
},
"Check - Array Access": {
"main": [
[
{
"node": "Success - Array Access",
"type": "main",
"index": 0
}
],
[
{
"node": "Error - Array Access",
"type": "main",
"index": 0
}
]
]
},
"Check - Basic Access": {
"main": [
[
{
"node": "Success - Basic Access",
"type": "main",
"index": 0
}
],
[
{
"node": "Error - Basic Access",
"type": "main",
"index": 0
}
]
]
},
"Test - Nested Object": {
"main": [
[
{
"node": "Check - Nested Object",
"type": "main",
"index": 0
}
]
]
},
"Answer - Basic Access": {
"main": [
[]
]
},
"Check - Nested Object": {
"main": [
[
{
"node": "Success - Nested Object",
"type": "main",
"index": 0
}
],
[
{
"node": "Error - Nested Object",
"type": "main",
"index": 0
}
]
]
},
"Success - JS Function": {
"main": [
[
{
"node": "Test - Final",
"type": "main",
"index": 0
}
]
]
},
"Success - Array Access": {
"main": [
[
{
"node": "Test - Nested Object",
"type": "main",
"index": 0
}
]
]
},
"Success - Basic Access": {
"main": [
[
{
"node": "Test - Array Access",
"type": "main",
"index": 0
}
]
]
},
"Success - Nested Object": {
"main": [
[
{
"node": "Test - Array of Objects",
"type": "main",
"index": 0
}
]
]
},
"Test - Array of Objects": {
"main": [
[
{
"node": "Check - Array of Objects",
"type": "main",
"index": 0
}
]
]
},
"Check - Array of Objects": {
"main": [
[
{
"node": "Success - Array of Objects",
"type": "main",
"index": 0
}
],
[
{
"node": "Error - Array of Objects",
"type": "main",
"index": 0
}
]
]
},
"Success - Array of Objects": {
"main": [
[
{
"node": "Test - JS Function",
"type": "main",
"index": 0
}
]
]
}
}
}常见问题
如何使用这个工作流？
复制上方的 JSON 配置代码，在您的 n8n 实例中创建新工作流并选择「从 JSON 导入」，粘贴配置后根据需要修改凭证设置即可。
这个工作流适合什么场景？
高级 - 工程
需要付费吗？
本工作流完全免费，您可以直接导入使用。但请注意，工作流中使用的第三方服务（如 OpenAI API）可能需要您自行付费。
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难度等级
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节点数量62
分类1
节点类型7
作者
Lucas Peyrin
@lucaspeyrinInnovative builder with a passion for crafting automation solutions that solve real-world challenges. From streamlining workflows to driving efficiency, my work empowers teams and individuals to achieve more with less effort. Experienced in developing scalable tools and strategies that deliver results with n8n, supabase and cline.
外部链接
在 n8n.io 查看 →
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