日期:2014-05-16  浏览次数:20408 次

js中设置样式的几种方式(setAttribute,className)

以设置背景色为例子


可以用单一的backgroundColor
可以用className
可以用setAttributesetAttribute removeAttribute)为一组

实例代码(实现效果点击一个按钮,就把整个背景色替换,点击其他的就换其他的)

 

<html>

<head>

<title></title>

<style type="text/css">
    .bg{
        background-color : "blue" ;
    }    
</style>

<script language="javascript" type="text/javascript">
    window.onload = function(){
    
        $("redC").onclick = function(){
            document.body.removeAttribute("className","bg");
            document.body.style.backgroundColor = "red";
        }
         $("blueC").onclick = function(){
            document.body.style.backgroundColor = "";
           
            document.body.setAttribute("className","bg");
//            document.body.className = "bg";
        }
        
        $("pinkC").onclick = function(){
          document.body.removeAttribute("className","bg");
            document.body.style.backgroundColor = "pink";
        }
        
        $("blackC").onclick = function(){
          document.body.removeAttribute("className","bg");
            document.body.style.backgroundColor = "black";
        }
    }
    
    function $(uid){
        return document.getElementById(uid);
    }
</script>

</head>

<body>
<input type="button" value="red" id="redC"/>
<input type="button" value="blue" id="blueC"/>
<input type="button" value="pink" id="pinkC"/>
<input type="button" value="black" id="blackC"/>
</body>

</html>