把getAttribute和setAttribute写成函数来使用 

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>index</title>
    <style>
        *{
            font-family: 微软雅黑;
        }
    </style>
</head>
<body>
    <h1 info='linux is very much!' id='hid' class='hcls'>linux is very much!</h1>
</body>
<script>
hidobj=document.getElementById('hid');

function getA(obj,attr){  //传值  对象 属性
    return obj.getAttribute(attr);
}

alert(getA(hidobj,'class'));

function setA(obj,attr,value){
    obj.setAttribute(attr,value);
}

setA(hidobj,'info','php is very much!'); //改变info属性得值为 php is very much  浏览器中看不到，在代码中看得到
</script>
</html>

 

posted @ 2020-12-27 22:51  大熊童鞋  阅读(100)  评论(0)  编辑  收藏  举报