【前端】表格的全选，反选与不选练习

表格的全选，反选与不选练习

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>表格全选</title>
    <style>
        table{
            border: 1px solid;
            width: 500px;
            margin-left: 30%;
        }

        td,th{
            text-align: center;
            border: 1px solid;
        }
        div{
            margin-top: 10px;
            margin-left: 30%;
        }
        .on{
            background-color: pink;
        }
        .off{
            background-color: white;
        }
    </style>
    <script>

        window.onload=function(){
            //设置全选按钮
            document.getElementById("selectAll").onclick=function () {
                //遍历
                var cbs = document.getElementsByName("cb");
                for(var i=0;i<cbs.length;i++){
                    cbs[i].checked=true;
                }

            }
            //设置全部不选按钮
            document.getElementById("unSelectAll").onclick=function () {
                //遍历
                var cbs = document.getElementsByName("cb");
                for(var i=0;i<cbs.length;i++){
                    cbs[i].checked=false;
                }

            }
            //设置全部反选按钮
            document.getElementById("selectRev").onclick=function () {
                //遍历
                var cbs = document.getElementsByName("cb");
                for(var i=0;i<cbs.length;i++){
                    cbs[i].checked=!cbs[i].checked;
                }

            }
            //设置一键选中
            document.getElementById("ck").onclick=function () {
                //遍历
                var cbs = document.getElementsByName("cb");
                for(var i=0;i<cbs.length;i++){
                    cbs[i].checked=this.checked;
                }

            }

            var trs = document.getElementsByTagName("tr");
            //遍历tr换颜色
            for(var i=0;i<trs.length;i++){
                trs[i].onmouseover=function () {
                       this.className="on";
                }
                trs[i].onmouseout=function () {
                    this.className="off";
                }
            }

        };






    </script>


</head>
<body>

<table>
    <caption>学生信息表</caption>
    <tr>
        <th><input type="checkbox" name="cb" id="ck"></th>
        <th>编号</th>
        <th>姓名</th>
        <th>性别</th>
        <th>操作</th>
    </tr>

    <tr>
        <td><input type="checkbox" name="cb"></td>
        <td>1</td>
        <td>令狐冲</td>
        <td>男</td>
        <td><a href="javascript:void(0);">删除</a></td>
    </tr>

    <tr>
        <td><input type="checkbox" name="cb"></td>
        <td>2</td>
        <td>任我行</td>
        <td>男</td>
        <td><a href="javascript:void(0);">删除</a></td>
    </tr>

    <tr>
        <td><input type="checkbox" name="cb"></td>
        <td>3</td>
        <td>岳不群</td>
        <td>?</td>
        <td><a href="javascript:void(0);">删除</a></td>
    </tr>

</table>
<div>
    <input type="button" id="selectAll" value="全选">
    <input type="button" id="unSelectAll" value="全不选">
    <input type="button" id="selectRev" value="反选">
</div>
</body>
</html>
表格效果
夏冬-Swint
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【前端】表格的全选，反选与不选练习

表格的全选，反选与不选练习

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