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编码猿
2024-09-27 02:06:13 +08:00
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>ajax</title>
</head>
<body>
<h2></h2>
<ul></ul>
</body>
<script>
// 拿出电话创建一个新的ajax对象
var ajax = new XMLHttpRequest();
// 设置电话号码
// 是否异步
ajax.open('GET', 'http://127.0.0.1:3000/index', true)
// 拨号
ajax.send();
// 监听网络状态,只有网络请求成功的时候才渲染页面,否则显示错误信息
ajax.onreadystatechange = function () {
if (ajax.readyState == 4) {
if (ajax.status == 200) {
console.log(ajax.responseText);
var data = JSON.parse(ajax.responseText);
console.log(data);
document.querySelector("h2").innerText = data.title;
data.list.forEach(v => {
document.querySelector("ul").innerHTML += `<li>${v.title}</li>`
});
// 将符合object或者array的字符串数据转化为 object 或 array类型 JSON.parse
// 将标准的object或者array 转换为string JSON.stringify(a)
} else {
console.log("数据请求失败,稍后再试");
}
}
}
// function getData(res) {
// console.log(res);
// var data = res;
// console.log(data);
// document.querySelector("h2").innerText = data.title;
// data.list.forEach(v => {
// document.querySelector("ul").innerHTML += `<li>${v.title}</li>`
// });
// }
</script>
<!-- <script src="http://127.0.0.1:3000/index?c=getData"></script> -->
</html>