jquery js 动态加载 js文件

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>

posted @ 2016-03-18 11:57 侠岚之弋痕夕阅读(6478) 评论(0) 编辑收藏举报

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jquery js 动态加载 js文件

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