JS给元素添加样式

时间:2025-01-22 12:09:28
<style type="text/css">
    div{ border:1px solid #ccc; width:200px; height:200px;}
    .a{ background:#900;}
    .b{ font-size:30px; font-weight:bold;}
</style>
    <title>无标题页</title>
<script type="text/javascript">
    function addClass(elements,value){   //addClass(元素,样式值)
        if(!)
        {
            =value;
        }
        else
        {
            var newClass=;
            newClass+=" ";
            newClass+=value;
            =newClass;
           
        }
    }
    window.οnlοad=function(){
        var test=("test");
        alert();
        addClass(test,"a b");
    }
</script>
</head>
<body>
<div class="m">hello</div>