显示这行代码出错了？att.setAttribute("class","one");

源自：9-6 setAttribute()方法

显示这行代码出错了？att.setAttribute("class","one");

<button id = "id" type="button" name="a">你好，我是宝宝</button>

<script>

var att = document.getElementsByName("a");

att.setAttribute("class","one");

</script>

<style>

.one{

color: red;

}

提问者：慕仔8415870 2021-07-23 22:17

个回答

weixin_慕数据5366478

2021-07-26 09:21:45

<button  id = "id" type="button" name="a" onclick="fun1">你好，我是宝宝</button>
<script>
    function fun1(){
        var att = document.getElementsByName("a");
        att.setAttribute("class","one");
    }
</script>
<style>
    .one{
        color: red;
    }

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