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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" type="text/javascript"></script>
<title>无标题文档</title>
<SCRIPT LANGUAGE="JavaScript">
<!--
$(function() {
$("#idex").click(function(){
$('input[name=checkbox1]').attr('checked',$(this).attr("checked"));
});
//当全选状态下,点击下面某个复选框取消打钩,全选框也动态取消勾
//当未选状态下,点击下面所有复选框打钩,全选框动态选中
var $checkboxes = $('input[name="checkbox1"]');
$('input[name=checkbox1]').click(function(){
// 总个数
var checkBoxCount = $checkboxes.length;
var $checked = $('input[name="checkbox1"]:checked');
// 已选择的个数
var checkedCount = $checked.length
$('#idex').attr('checked',checkBoxCount == checkedCount);
});
});
//-->
</SCRIPT>
</head>
<body onload=''>
<form name="form1">
<center><h1>复选框实例</h1></center>
<input type="checkbox" id="idex" name="checkboxall" class="checkall" value="yyyy">全选</input><br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">aa<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">bb<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">cc<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">dd<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">ee<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">ff<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">gg<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">hh<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">ii<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">kk<br/>
</form>
</body>
</html>
//10楼有点小问题,连全选那个复选框一起绑定了
$(":checkbox[name='checkbox1']").click( function() {
if ($(":checkbox[name='checkbox1']:checked").length == $(":checkbox[name='checkbox1']").length) $("#idex").attr("checked","checked");
else $("#idex").removeAttr("checked");
});
$(":checkbox").click( function() {
if ($(":checkbox[name='checkbox1']:checked").length == $(":checkbox[name='checkbox1']").length) $("#idex").attr("checked","checked");
else $("#idex").removeAttr("checked");
});
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>zell419</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script>
<script>
jQuery(function($) {
$(":checkbox:not('#idex')").click(function(event) {
if( $(":checkbox:not('#idex')[checked='true']").size()>0) $("#idex").attr("checked",true);
else $("#idex").attr("checked",false);
});
});
var selectAll =function(obj){
//你的全选
}
</script>
</head>
<body>
<form name="form1">
<center><h1>复选框实例</h1></center>
<input type="checkbox" id="idex" name="checkboxall" class="checkall" value="yyyy" onclick="selectAll(this);">全选</input><br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">aa<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">bb<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">cc<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">dd<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">ee<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">ff<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">gg<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">hh<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">ii<br/>
<input type="checkbox" name="checkbox1" id="checkbox1" value="">kk<br/>
</form>
</body>
</html>
<html>
<head>
<script language="javascript">
function check(){
var allCb = document.getElementsByName("cb");
var flag = false;
for(var i = 0; i < allCb.length; i++){
if(allCb[i].checked){
flag = true;
}
}
if(flag){
document.getElementById("all").checked = false;
}
}
</script>
</head>
<body>
<input id="all" type="checkbox" onclick="check()" checked /><br /><br />
<input name="cb" type="checkbox" onclick="check()" checked /><br />
<input name="cb" type="checkbox" onclick="check()" checked /><br />
<input name="cb" type="checkbox" onclick="check()" checked />
</body>
</html>
function selectAll(checkbox) { //全选全不选
$('input[type=checkbox]').attr('checked', $(checkbox).attr('checked'));
}