<!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>Document</title>
</head>
<body>
用户名:<input type='text' id='text1'>
<input type='button' value='点击注册' id='btn'>
<script>
let text = document.querySelector('#text1');
let btn = document.querySelector('#btn');
btn.onclick = function () {
const ajax = new XMLHttpRequest ;
ajax.open('post','php/post.php',true);
ajax.setRequestHeader("Content-Type","application/x-www-form-urlencoded");//设置请求头,知道发送的文件的数据格式
ajax.send('user='+text.value);
ajax.onload = function () {
console.log(ajax.responseText);
}
}
</script>
</body>
</html>
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