starry001
V2EX  ›  问与答

onmouseover 为什么没有实现?

  •  
  •   starry001 · Feb 12, 2018 · 1305 views
    This topic created in 3019 days ago, the information mentioned may be changed or developed.
    代码:
    <script>
    var kkkk=document.getElementById('kkkk');
    kkkk.onmouseover=function(){
    alert(11);
    }
    </script>
    </head>
    <style>
    #kkkk{
    display:block;
    width:200px;
    height:200px;
    background:#000;
    }

    </style>
    <div id="kkkk"></div>
    想要实现鼠标经过 div,会有弹窗效果,但是没有反应,为什么?
    vuuv
        1
    vuuv  
       Feb 13, 2018 via Android
    脚本放在页面结尾吧。你执行这段脚本时都没 dom。
    jasperjia
        2
    jasperjia  
       Feb 13, 2018
    代码是顺序执行的,记住这点可以解决新手 10%的错误
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