jQuery实现CheckBox全选、全不选以及获取选中的值
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>jQuery实现CheckBox全选、全不选</title>
<script src="http://code.jquery.com/jquery-1.4.4.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function() {
//判断是否全选
$("#checkAll").click(function() {
$('input[name="subBox"]').attr("checked",this.checked);
});
var $subBox = $("input[name='subBox']");
$subBox.click(function(){
alert($subBox.length);
alert($("input['subBox']:checked").length);
$("#checkAll").attr("checked",$subBox.length == $("input[name='subBox']:checked").length ? true : false);
});
//用于检查是否选中,选中的话提示值
$("#butt").click(function (){
//$('input[name="subBox"]').attr("checked",this.checked);
var arrChk=$("input[name='subBox']:checked");
$(arrChk).each(function(){ //each() 遍历函数
alert(this.value);
});
if(arrChk.length==0){
alert("没有选中")
}
});
});
</script>
</head>
<body>
<div>
<input id="checkAll" type="checkbox" />全选
<input name="subBox" type="checkbox" value="1" />选项1
<input name="subBox" type="checkbox" value="2"/>选项2
<input name="subBox" type="checkbox" value="3"/>选项3
<input name="subBox" type="checkbox" value="4"/>选项4
<input type="button" id="butt" value="检查是否选中"/>
</div>
</body>
</html>
<html>
<head>
<meta charset="utf-8" />
<title>jQuery实现CheckBox全选、全不选</title>
<script src="http://code.jquery.com/jquery-1.4.4.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function() {
//判断是否全选
$("#checkAll").click(function() {
$('input[name="subBox"]').attr("checked",this.checked);
});
var $subBox = $("input[name='subBox']");
$subBox.click(function(){
alert($subBox.length);
alert($("input['subBox']:checked").length);
$("#checkAll").attr("checked",$subBox.length == $("input[name='subBox']:checked").length ? true : false);
});
//用于检查是否选中,选中的话提示值
$("#butt").click(function (){
//$('input[name="subBox"]').attr("checked",this.checked);
var arrChk=$("input[name='subBox']:checked");
$(arrChk).each(function(){ //each() 遍历函数
alert(this.value);
});
if(arrChk.length==0){
alert("没有选中")
}
});
});
</script>
</head>
<body>
<div>
<input id="checkAll" type="checkbox" />全选
<input name="subBox" type="checkbox" value="1" />选项1
<input name="subBox" type="checkbox" value="2"/>选项2
<input name="subBox" type="checkbox" value="3"/>选项3
<input name="subBox" type="checkbox" value="4"/>选项4
<input type="button" id="butt" value="检查是否选中"/>
</div>
</body>
</html>