本文實例為大家分享了JavaScript實現(xiàn)復選框全選的具體代碼，供大家參考，具體內(nèi)容如下
代碼：
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<!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>價格</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內(nèi)容，希望對大家的學習有所幫助，也希望大家多多支持服務器之家。
原文鏈接：https://blog.csdn.net/KathyLJQ/article/details/115573734
