jquery方法
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>Document</title>
<script type="text/javascript" src="2.1.js"></script>
</head>
<body>
this is a js demo
<script type="text/javascript">
// $.getScript("./demo.js"); //加载js文件
$.getScript("./demo.js",function(){ //加载test.js,成功后，并执行回调函数
console.log("加载js文件");
});
</script>
</body>
</html>
demo.js
alert("aaaa");
js方法
<html>
<body>
</body>
</html>
<script type="text/javascript">
function loadScript(url, callback) {
var script = document.createElement("script");
script.type = "text/javascript";
if(typeof(callback) != "undefined"){
if (script.readyState) {
script.onreadystatechange = function () {
if (script.readyState == "loaded" || script.readyState == "complete") {
script.onreadystatechange = null;
callback();
}
};
} else {
script.onload = function () {
callback();
};
}
}
script.src = url;
document.body.appendChild(script);
} loadScript("http://code.jquery.com/jquery-latest.js", function () { //加载,并执行回调函数
alert($(window).height());
}); //loadScript("http://code.jquery.com/jquery-latest.js"); //加载js文件
</script>