html获取网络数据，列表展示 第二种
js遍历json数组中的json对象
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|| '-' 判断数据是否为空，为空就显示 -
<!DOCTYPE html>
<html><head><meta charset="utf-8"><title>网页列表</title><script type="text/javascript">// https://api.thecatapi.com/v1/images/search?limit=2// // {// "id": "1ep",// "url": "https://cdn2.thecatapi.com/images/1ep.jpg",// "width": 448,// "height": 674// },// 创建XMLHttpRequest对象,新版本的浏览器可以直接创建XMLHttpRequest对象,IE5或IE6没有// XMLHttpRequest对象，而是用的ActiveXObject对象var xhr = window.XMLHttpRequest ? new XMLHttpRequest() : ActiveXObject("microsoft.XMLHttp")xhr.open("get", 'https://api.thecatapi.com/v1/images/search?limit=2', true);xhr.send(); //发送请求// 监听请求的状态xhr.onreadystatechange = function() {if (xhr.readyState === 4 && xhr.status === 200) {// 请求成功后的处理console.log('111 111 返回的数据', xhr.responseText);var imgurlStr = "";// // 打印，获取json里的对象var data2 = JSON.parse(xhr.responseText);data2.forEach(item => {imgurlStr += `<div id="${item.id}"> <div>${item.id}</div><img style="width: 100px; height: 100px;" src="${item.url}" alt="" width=" ${item.width}px" height="${item.height}px"></div>`})document.getElementById("listID").innerHTML = imgurlStr;}};</script></head><body><div id="listID"> </div></body></html>或这样
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data2.forEach((item, index) => {imgurlStr += `<div id="${item.aJZT}-${index}" style="margin-bottom:20px;border-radius:10px;border:1px solid #ddd;"> <div style="border: 1px #f2f2f2 double; margin: 12px;"><div class="cell2" style="font-weight:bold;font-size:30px;"><div class="cell-lab">某某时间</div><div class="cell-val" id="cXSJ">${item.cXSJ|| '-'}</div></div><div class="cell"><div class=" cell-lab">某某状态</div><div class="cell-val" id="aJZT">${item.aJZT || '-'}</div></div></div></div>`})
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