Js相关技术
checked属性
如何获取所有复选框：document.getElementsByName、
需求分析
在我们对表格处理的时,有些情况下,我们需要对表格进行批量处理
技术分析
第一种方法：选择器[属性名称='属性值']
$("input[type='checkbox']:gt(0)").prop("checked",this.checked);
第二种方法：使用层级选择器来实现 tbody > tr > td > input
$("tbody > tr > td > input").prop("checked",this.checked);
第三种方法：
// #tab > tbody > tr:nth-child(4) > td:nth-child(1) > input[type="checkbox"]
代码实现
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <script type="text/JavaScript" src="../js/jquery-1.11.0.js" ></script> <script> /* 表格全选和全不选 进一步确定事件: 点击事件 */ $(function(){ //绑定点击事件 //this 代表的是当前函数的所有者 $("#checkAll").click(function(){ //获取当前选中状态 // alert(this.checked); //获取所有分类项的checkbox // 选择器[属性名称='属性值'] // $("input[type='checkbox']:gt(0)").prop("checked",this.checked); //使用层级选择器来实现 tbody > tr > td > input // $("tbody > tr > td > input").prop("checked",this.checked); //这个可行 // #tab > tbody > tr:nth-child(4) > td:nth-child(1) > input[type="checkbox"] $("input").prop("checked",this.checked); }); }); </script> </head> <body> <table border="1px" width="600px" id="tab"> <thead> <tr > <td> <input type="checkbox" id="checkAll" /> </td> <td>分类ID</td> <td>分类名称</td> <td>分类商品</td> <td>分类描述</td> <td>操作</td> </tr> </thead> <tbody> <tr> <td> <input type="checkbox" /> </td> <td>1</td> <td>手机数码</td> <td>华为,小米,尼康</td> <td>黑马数码产品质量最好</td> <td> <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >修改</a>|<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >删除</a> </td> </tr> <tr> <td> <input type="checkbox" /> </td> <td>2</td> <td>成人用品</td> <td>充气的</td> <td>这里面的充气电动硅胶的</td> <td><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >修改</a>|<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >删除</a></td> </tr> <tr> <td> <input type="checkbox" /> </td> <td>3</td> <td>电脑办公</td> <td>联想,小米</td> <td>笔记本特卖</td> <td><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >修改</a>|<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >删除</a></td> </tr> <tr> <td> <input type="checkbox" /> </td> <td>4</td> <td>馋嘴零食</td> <td>辣条,麻花,黄瓜</td> <td>年货</td> <td><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >修改</a>|<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >删除</a></td> </tr> <tr> <td> <input type="checkbox" /> </td> <td>5</td> <td>床上用品</td> <td>床单,被套,四件套</td> <td>都是套子</td> <td><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >修改</a>|<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >删除</a></td> </tr> </tbody> </table> </body> </html>
