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Code sharing for implementing dynamic checkboxes in tables using jquery

零到壹度Original: 2018-04-09 16:58:441556browse

The content of this article is to share the code of jquery to realize the dynamic check box of the table. It has a certain reference value. Friends in need can refer to it

The effect is as follows Picture
Code sharing for implementing dynamic checkboxes in tables using jquery

<!DOCTYPE html><html><head>
    <title></title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- 引入bootstrap -->
    <link rel="stylesheet" href="css/bootstrap.min.css" />
    <!-- 引入JQuery  bootstrap.js-->
    <script type="text/javascript" src="js/jquery-3.2.1.min.js" ></script>
    <script type="text/javascript" src="js/bootstrap.min.js" ></script></head><body>
    <p class="container">
        <p class="col-md-7">
            <button id=&#39;addTypeBtn&#39; class="btn btn-default btn-danger">添加</button>
            <button class="btn btn-default">保存</button>
            <table  class="table">
                <thead>
                    <tr>
                        <th><input id=&#39;checkAll&#39; type="checkbox"/></th>
                        <th>姓名</th>
                        <th>年龄</th>
                    </tr>
                </thead>
                <tbody>
                    <tr>
                        <td><input type="text" placeholder="请输入姓名"  value="张三"/></td>
                        <td><input type="number" style="width: 40px" value="1"/></td>
                    </tr>
                    <tr>
                        <td><input type="text" placeholder="请输入姓名"  value="张三"/></td>
                        <td><input type="number" style="width: 40px" value="1"/></td>
                    </tr>
                    <tr>
                        <td><input type="text" placeholder="请输入姓名"  value="张三"/></td>
                        <td><input type="number" style="width: 40px" value="1"/></td>
                    </tr>
                </tbody>
            </table>
        </p>
    </p></body><script>

    $(function(){

        //初始化
        function initTable() {
            var checkAll = $(&#39;#checkAll&#39;);            var trs = $(&#39;tbody tr&#39;);            var tag = $(&#39;<td><input name="checkitem" type="checkbox"/></td>&#39;);
            trs.prepend(tag);            //得到tbody中的所有选框.
            var checks = $(&#39;input[name="checkitem"]&#39;);            //给全选框添加事件
            checkAll.on(&#39;click&#39;,function(event){
                if($(this).prop(&#39;checked&#39;) == false){ //全部取消
                    $(&#39;input[type="checkbox"]&#39;).prop(&#39;checked&#39;,false);
                }else{
                    $(&#39;input[type="checkbox"]&#39;).prop(&#39;checked&#39;,true);
                }
            });            //给每个单独的选择框加事件
            $(&#39;tbody&#39;).on(&#39;click&#39;,function(event){
                checks = $(&#39;input[name="checkitem"]&#39;);                if (event.target.name == &#39;checkitem&#39;){                    if($(this).prop(&#39;checked&#39;) == false){
                    $(this).prop(&#39;checked&#39;,false);
                    }else{
                        $(this).prop(&#39;checked&#39;,true);
                    }                    //判断是否选满了
                    if(checks.length == $(&#39;tbody&#39;).find(&#39;input:checked&#39;).length){
                        checkAll.prop(&#39;checked&#39;,true);
                    }else{
                        checkAll.prop(&#39;checked&#39;,false);
                    }
                }
            });
        }

        initTable();        //新增点击事件
        $(&#39;#addTypeBtn&#39;).on(&#39;click&#39;, function () {
            var html = &#39;&#39;;
            html += &#39;<tr class="active">&#39;;
            html += &#39;<td><input name="checkitem" type="checkbox"/></td>&#39;
            html += &#39;<td><input type="text" placeholder="请输入姓名"  value="张三"/></td>&#39;;
            html += &#39;<td><input type="number" style="width: 40px" value="1"/></td>&#39;;
            html += &#39;<td>&#39;;
            html += &#39;</tr>&#39;;            var html = $(html)
            $(&#39;tbody&#39;).append(html);            //取消全选
            $(&#39;#checkAll&#39;).prop(&#39;checked&#39;,false);
        });
    });</script></html>

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