客户端js 读取 json 数据
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客户端js 读取 json 数据
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?采用 XMLHttpRequest? 讀取。
1. new 初始化?XMLHttpRequest
2. open 設置請求方式，地址
3. send 發起請求
4.onload 請求成功，返回結果
代碼：
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta http-equiv="X-UA-Compatible" content="ie=edge"><title>js如何讀取json文件</title><script>window.onload = function () {var url = "index.json"var request = new XMLHttpRequest();request.open("get", url);request.send(null);request.onload = function () {if (request.status == 200) {var json = JSON.parse(request.responseText);var ol = document.getElementById('ol');var frag = document.createDocumentFragment();json.person.map(person => {var li = document.createElement("li");li.innerHTML = `名字是 ${person.name} 圖片是 ${person.image}`;frag.append(li);})ol.append(frag)}}}</script> </head><body><div><ol id="ol"></div> </body></html>數據：
{"person":[{ "name": "云天河" , "image" : "tianhe.png" },{ "name": "韓菱紗" , "image" : "lingsha.png" },{ "name": "柳夢璃" , "image" : "mengli.png" },{ "name": "慕容紫英" , "image" : "ziying.png" },{ "name": "云天青" , "image" : "tianqing.png" },{ "name": "夙玉" , "image" : "suyu.png" },{ "name": "玄霄" , "image" : "xuanxiao.png" },{ "name": "夙瑤" , "image" : "suyao.png" },{ "name": "太清" , "image" : "taiqing.png" },{ "name": "宗煉" , "image" : "zonglian.png" },{ "name": "嬋幽" , "image" : "chanyou.png" },{ "name": "奚仲" , "image" : "xizhong.png" },{ "name": "歸邪" , "image" : "guixie.png" }] }總結
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