JavaScript实现复选框全选功能
程序员文章站
2022-04-29 22:49:45
本文实例为大家分享了javascript实现复选框全选的具体代码,供大家参考,具体内容如下代码:
本文实例为大家分享了javascript实现复选框全选的具体代码,供大家参考,具体内容如下
代码:
<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="x-ua-compatible" content="ie=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>document</title> <style> table { width: 300px; border-spacing: 0; /* text-align: center; */ margin: 100px auto; border-collapse: collapse; } table tr:nth-child(n+2)>td { text-align: left; background-color: rgb(250, 245, 245); color: dimgray; font-size: 14px; } table tr:nth-child(1) { background-color: skyblue; color: white; } th, td { padding: 10px; border: 0.5px solid gray; } </style> </head> <body> <table> <tr> <th><input type="checkbox" name="" id="all"></th> <th>商品</th> <th>价格</th> </tr> <tr> <td><input type="checkbox" name="" id="ip8"></td> <td>iphone8</td> <td>8000</td> </tr> <tr> <td><input type="checkbox" name="" id="pro"></td> <td>ipad pro</td> <td>5000</td> </tr> <tr> <td><input type="checkbox" name="" id="air"></td> <td>ipad air</td> <td>2000</td> </tr> <tr> <td><input type="checkbox" name="" id="watch"></td> <td>apple watch</td> <td>2000</td> </tr> </table> <script> var all = document.getelementbyid('all'); var items = document.queryselectorall('tr>td>input'); all.onclick = function() { for (var i = 0; i < items.length; i++) { items[i].checked = this.checked; } } for (var i = 0; i < items.length; i++) { items[i].onclick = function() { var flag_all = 1; for (var j = 0; j < items.length; j++) { if (items[j].checked == 0) { flag_all = 0; all.checked = flag_all; break; } } all.checked = flag_all; } } </script> </body> </html>
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。