欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

JS案例五:设置全选、全不选以及反选

程序员文章站 2023-09-28 15:51:28
``` 全选和全不选以及反选 全选 编号姓名年龄 1张三12 2李四22 3王五13 4马六14 ... ......
<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>全选和全不选以及反选</title>
        <script>
            window.onload = function() {
                var checkedall = document.getelementbyid("checkedall");
                var checkedone = document.getelementsbyname("checkedone");
                //全选和全不选事件
                checkedall.onclick = function() {
                    if(checkedall.checked == true){
                        for(var i = 0;i<checkedone.length;i++) {
                            checkedone[i].checked = true;
                        }
                    }else {
                        for(var i = 0;i<checkedone.length;i++) {
                            checkedone[i].checked = false;
                        }
                    }
                }
                //反选事件
                document.getelementbyid("reselect").onclick = function() {
                    for(var i =0;i<checkedone.length;i++) {
                        checkedone[i].checked = !checkedone[i].checked;
                    }
                }
            }
        </script>
    </head>
    <body>
        <table id="tbl" border="1" border-collapse="collapse" align="center" cellspacing="0" cellpadding="5" width="400" height="20">
            <thead>
                <tr>
                    <th><input type = "checkbox" id="checkedall">全选</input></th>
                    <th>编号</th><th>姓名</th><th>年龄</th>
                </tr>
            </thead>
            <tbody>
                <tr>
                    <td><input type="checkbox" name="checkedone"/></td>
                    <td>1</td><td>张三</td><td>12</td>
                </tr>
                <tr>
                    <td><input type="checkbox" name="checkedone"/></td>
                    <td>2</td><td>李四</td><td>22</td>
                </tr>
                <tr>
                    <td><input type="checkbox" name="checkedone" /></td>
                    <td>3</td><td>王五</td><td>13</td>
                </tr>
                <tr>
                    <td><input type="checkbox" name="checkedone"/></td>
                    <td>4</td><td>马六</td><td>14</td>
                </tr>
                <tr>
                    <td><input type="checkbox" name="checkedone"/></td>
                    <td>5</td><td>伍六七</td><td>17</td>
                </tr>
                <tr>
                    <td><input type="checkbox" name="checkedone"/></td>
                    <td>6</td><td>梅花十三</td><td>17</td>
                </tr>
                <tr>
                    <td colspan=4><input type="button" value="反选" id="reselect" /></td>
                </tr>
            </tbody>
        </table>
    </body>
</html>