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HTML css/style/关键字位置不同

 

 

<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .box{
      background-color:red;     
            width: 100px;
            height: 100px;
            margin-top: 35px;
        }
    </style>
</head>
<body>
<div class="box"  >
</div>
<script>
    var box=document.getElementsByClassName("box")[0];
    box.onclick=function() {
    box.style.backgroundColor = "blue";
    }
</script>
</body>
</html>

 

两边的backgroundcolor 关键字名字不同 

 

 

body  style 里的写法

 

<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div style="width: 100px; height: 100px;background-color:pink;">
</
div>
<script> var div= document.getElementsByTagName("div")[0]; div.onmouseover=function(){ div.style.width="200px"; div.style.height="200px"; div.style.backgroundColor="black"; div.style.opacity="0.2"; div.style.filter="alpha(opacity=20)"; } </script> </body> </html>

 

HTML css/style/关键字位置不同