select 控件值大小比较

来源：互联网发布：和平网络电视 apk 编辑：程序博客网时间：2024/06/06 09:29
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"        "http://www.w3.org/TR/html4/loose.dtd"><html><head>    <title></title>    <meta charset="utf-8">    <script type="text/javascript" src="jquery-1.7.2.min.js"></script></head><body><select data-rel="chosen" id="weekenddayStart" name="weekenddayStart">    <option value="0">0</option>    <option value="1">1</option>    <option value="2">2</option>    <option value="3">3</option>    <option value="4">4</option>    <option value="5">5</option>    <option value="6">6</option>    <option value="7">7</option>    <option value="8">8</option>    <option value="9">9</option>    <option value="10">10</option>    <option value="11">11</option>    <option value="12">12</option>    <option value="13">13</option>    <option value="14">14</option>    <option value="15">15</option></select><select data-rel="chosen" onchange="timeValidater(this.id)" id="weekenddayEnd" name="weekenddayEnd">    <option value="0">0</option>    <option value="1">1</option>    <option value="2">2</option>    <option value="3">3</option>    <option value="4">4</option>    <option value="5">5</option>    <option value="6">6</option>    <option value="7">7</option>    <option value="8">8</option>    <option value="9">9</option>    <option value="10">10</option>    <option value="11">11</option>    <option value="12">12</option>    <option value="13">13</option>    <option value="14">14</option>    <option value="15">15</option></select><script>    function timeValidater(id) {        var objEnd = document.getElementById(id);        var endId = id.substr(0,id.length-3) + "Start";        var objStart = document.getElementById(endId + "");        var starValue = objStart.value;        var endValue = objEnd.value;        // 比较数值的时候需要转换一下        if (parseInt(objEnd.value) < parseInt(objStart.value)) {            alert("结束时间要比开始时间大");            objEnd.selectedIndex = objStart.selectedIndex;            return;        }    }</script></body></html>
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