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js复选框全选反选的方法

一个新手

Lepaskan： 2017-09-30 09:04:38

asal

2411 orang telah melayarinya

本篇文章是关于复选框的，有2种形式：1、全选、反选由2个按钮实现；2、全选、反选由一个按钮实现。

<!DOCTYPE html><html>
    <head>
        <meta charset="UTF-8">
        <title>复选框demo</title>
        <script src="../js/jquery-1.10.2.js" type="text/javascript"></script>
        <style>
            body{ text-align:center} 
            .con{ margin:100px auto; width:800px; height:400px; border:1px solid #F00; padding-top: 50px;} 
        </style> 
    </head>
    <body>
        <p class="con">
            <span><input type=&#39;checkbox&#39; name=&#39;select&#39; onclick=&#39;allSelect()&#39;>全选</span>
            <span><input type=&#39;checkbox&#39; name=&#39;cancel&#39; onclick=&#39;unAllSelect()&#39;>反选</span>
            <span><input type=&#39;checkbox&#39; name=&#39;fruit&#39; />苹果</span>
            <span><input type=&#39;checkbox&#39; name=&#39;fruit&#39; />香蕉</span>
            <span><input type=&#39;checkbox&#39; name=&#39;fruit&#39; />梨子</span>
            <span><input type=&#39;checkbox&#39; name=&#39;fruit&#39; />桃子</span>
            <span><input type=&#39;checkbox&#39; name=&#39;fruit&#39; />西瓜</span>
            
            <br><br><br>
            
            <span><input type=&#39;checkbox&#39; id="allBook"  name=&#39;allBook&#39; />全选</span>
            <span><input type=&#39;checkbox&#39; name=&#39;book&#39; />老子</span>
            <span><input type=&#39;checkbox&#39; name=&#39;book&#39; />尚书</span>
            <span><input type=&#39;checkbox&#39; name=&#39;book&#39; />周易</span>
            <span><input type=&#39;checkbox&#39; name=&#39;book&#39; />诗经</span>
            <span><input type=&#39;checkbox&#39; name=&#39;book&#39; />孟子</span>
            <span><input type=&#39;checkbox&#39; name=&#39;book&#39; />中庸</span>
            <script type="text/javascript">
    //全选
    function allSelect(){
        $("input[name=&#39;fruit&#39;]").prop("checked", "checked");
        $("input[name=&#39;cancel&#39;]").removeAttr("checked");
    }    //反选
    function unAllSelect(){
        $("input[name=&#39;fruit&#39;]").removeAttr("checked");
        $("input[name=&#39;select&#39;]").removeAttr("checked");
    }    
    //单选    
            $("#allBook").click(function(){        
            if(this.checked){//            
            $("input[name=&#39;book&#39;]").attr("checked", true);            
            $("input[name=&#39;book&#39;]").prop("checked", "checked");
          }else{//          
          $("input[name=&#39;book&#39;]").attr("checked", false);            
          $("input[name=&#39;book&#39;]").removeAttr("checked");
          }
    });</script>
        </p>
    </body>
    </html>

Salin selepas log masuk

在实践中碰到一个问题——check全选失效。解决办法，使用prop方法代替attr。

$("input[name=&#39;book&#39;]").attr("checked", "checked");
$("input[name=&#39;book&#39;]").prop("checked", "checked");

Salin selepas log masuk

这或许是和jQuery版本有关。

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