JQuery checkbox实现全选反选
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Untitled Document</title><script language="JavaScript" src="../js/jquery-1.4.2.js"></script></head><script language="JavaScript">$(document).ready(function() {//<input type="button" id="CheckedAll" value="全 选"/>$("#CheckedAll").click(function() {$("input[name=items]").attr("checked","checked");});//<input type="button" id="CheckedNo" value="全不选"/>$("#CheckedNo").click(function() {$("input[name=items]").attr("checked",null);});//<input type="button" id="CheckedRev" value="反 选"/> $("#CheckedRev").click(function() {$("input[name=items]").each(function(index, domEle) {if(domEle.checked) {$(domEle).attr("checked",null);} else {$(domEle).attr("checked","checked");}});});//<input type="checkbox" id="checkedAll_2"/>全选/全不选$("#checkedAll_2").click(function() {if(this.checked) {$("input[name=items]").attr("checked","checked");} else {$("input[name=items]").attr("checked",null);}});});</script><body><form method="post" action=""> 请选择您的爱好!<br><input type="checkbox" id="checkedAll_2"/>全选/全不选 <br/> <input type="checkbox" name="items" value="足球"/>足球<input type="checkbox" name="items" value="篮球"/>篮球<input type="checkbox" name="items" value="游泳"/>游泳<input type="checkbox" name="items" value="唱歌"/>唱歌 <br/> <input type="button" id="CheckedAll" value="全 选"/> <input type="button" id="CheckedNo" value="全不选"/> <input type="button" id="CheckedRev" value="反 选"/> <input type="button" id="send" value="提 交"/> </form></body></html>