戳这个按钮不能改变颜色



test01
    <!--这里是通过点击按钮来改变页面的样式。类似于换皮肤的原理-->
    <link id="mylink"” href="css/1.css"  rel="stylesheet" type="text/css" />

    <script type="text/javascript">
        windows.onload = function(){
            var mybut = document.getElementById("changecss");
            var mylink = document.getElementById("mylink");
            mybut.onclick = function(){
                myink.href = "css/2.css";
            }
        }
    </script>
</head>

<body>
    <input id="changecss" type="button" value="戳我更换样式表" />
</body>

windows.onload =>window.onload

Onload can be uses as said

动态修改样式引用文件后，页面没有重新加载的话，不会生效的吧。