不适用内函数或者promise的方式，可以在外部提取到json数据
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script>
function createXHR(){
var xhr = null;
if(window.XMLHttpRequest){
xhr = new XMLHttpRequest();
}else if(window.ActiveXObject){
xhr = new ActiveXObject("Microsoft.XMLHTTP");
}
return xhr;
}
function test1(){
var xhr = createXHR();
xhr.open(‘GET‘,‘http://localhost/firstphp/js/SiteGPS.js‘,true);
xhr.onreadystatechange = function(){
if(this.readyState == 4){
alert(this.responseText);
}
}
xhr.send(null);
}
</script>
</head>
<body>
<input type="button" value="更新歌曲" onclick="test1();">
<div id="lists"></div>
</body>
</html>
时间： 2024-10-16 13:01:10