<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title></head><body> <form> <label for="apple">苹果</label> <input type="checkbox" name="apple"> <label for="banana">香蕉</label> <input type="checkbox" name="banana"> <label for="orange">橘子</label> <input type="checkbox" name="orange"> <input type="button" value="全选" onclick="allPick()"> <input type="button" value="全不选" onclick="unAllPick()"> <input type="button" value="反转" onclick="inverserPick()"> </form> <script src="http://cdn.bootCSS.com/jquery/3.1.1/jquery.min.js"></script> <script> // 全选 function allPick() { $("[type=checkbox]:checkbox").each(function () { this.checked = true; }) } // 全不选 function unAllPick() { $("[type=checkbox]:checkbox").each(function () { this.checked = false; }) } // 反转 function inverserPick() { $("[type=checkbox]:checkbox").each(function () { this.checked = !this.checked; }) } </script></body></html>
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