<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>AJAX发送GET请求并传递参数</title>
</head>
<body>
<ul id="list"></ul>
<script>
var listElement = document.getElementById('list');
// 发送请求获取列表数据呈现在页面
// =======================================
var xhr = new XMLHttpRequest();
xhr.open('GET', 'users.php');
xhr.send();
xhr.onreadystatechange = function () {
if (this.readyState !== 4) return;
var data = JSON.parse(this.responseText);
// data => 数据
for (var i = 0; i < data.length; i++) {
var liElement = document.createElement('li');
liElement.innerHTML = data[i].name;
liElement.id = data[i].id;
listElement.appendChild(liElement);
liElement.addEventListener('click', function () {
// TODO: 通过AJAX操作获取服务端对应数据的信息
// 如何获取当前被点击元素对应的数据的ID
// console.log(this.id)
var xhr1 = new XMLHttpRequest();
xhr1.open('GET', 'users.php?id=' + this.id);
xhr1.send();
xhr1.onreadystatechange = function () {
if (this.readyState !== 4) return;
var obj = JSON.parse(this.responseText);
alert(obj.age)
}
})
}
}
</script>
</body>
</html>