zoukankan      html  css  js  c++  java
  • select标签的描述

      1、标签html与js如下代码

    <!DOCTYPE html>
    <html>
    
        <head>
            <meta charset="UTF-8">
            <title></title>
            <script type="text/javascript" src="js/jquery-2.1.0.js"></script>
        </head>
    
        <body>
            <select name="city" id="city_id" onchange="setAct(this)">
                <option value="1" code="0531">济南</option>
                <option value="2" code="0532">青岛</option>
                <option value="3" code="0538">泰安</option>
            </select>
            <input type="button" name=""  onclick="setact()" value="点击测试" />
            <script type="text/javascript">
                function setact(item){
                    re = $("#city_id option").toArray()
                    
                    var tmp;
                    tmp = re[0]
                    re[0]=re[2]
                    re[2] = tmp
                    $("#city_id").html(re)
                    $("#city_id option[value='2']").attr("selected",true)
                    $("#city_id option").first().text("贵州")
                    $("#city_id option").first().val("0")
                    $("#city_id option[value='3']").attr("selected",false)
                    
                    $("#city_id").val("3");
                    
                }
                function setAct(itme){
                    console.log($("#city_id").val())
                }
            </script>
    
        </body>
    
    </html>
    

      

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  • 原文地址:https://www.cnblogs.com/wuzaipei/p/10695186.html
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