dom select选单

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<head>

<meta charset="utf-8">

<title>无标题文档</title>

<style>

body { margin: 0; padding: 0; }

ul { padding: 0; margin: 0; }

li { list-style: none; }

a { text-decoration: none; color: #000; display: block; }

#div1 { width: 250px; height: 20px; border: 1px solid #fe6601; padding: 5px; line-height:20px; margin: 20px auto 0 auto;}

#ul1 { margin: 0 auto; width: 260px; line-height: 20px; border: 1px solid #fe6601; display: none;}

#ul1 li a { padding: 5px; }

#ul1 li a:hover { background: #fe6601; color: #fff; }

</style>

<script type="text/javascript">

window.onload = function ()

{

    var odiv = document.getElementById('div1');

    var oul = document.getElementById('ul1');

    var arr = [];

    odiv.onclick = function (ev)

    {

        var ev = ev || event;

        oul.style.display = 'block';

        ev.cancelBubble = true;

    }

    for(var i = 0; i < oul.children.length; i++ )

    {

        oul.children[i].onclick = function ()

        {

            for(var i = 0; i < oul.children.length; i++ )

            {

                oul.children[i].children[0].style.background = '';

                oul.children[i].children[0].style.color = '';

            }

            odiv.innerHTML = this.children[0].innerHTML;

            this.children[0].style.background = '#fe6601';

            this.children[0].style.color = '#fff';

        }

    }

    document.onclick = function ()

    {

        oul.style.display = 'none';

        arr = [];

    }

};

</script>

</head>

<body>

    <div id="div1"></div>

    <ul id="ul1">

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    </ul>

</body>

</html>
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