//全部选择,jquery版本 1.8
$(document).on('click','#checkAll',function() {
var flag = $("#checkAll").is(':checked');
$("input[name='chk_item']:checkbox").each(function() {
$(this).prop("checked", flag);
});
});
//获取选中的记录的id
var ids = "";
$("input[name='chk_item']:checkbox").each(function() {
var flag = $(this).is(':checked');
if(flag){
ids += $(this).val() + ",";
}
});
<input type="checkbox" name="checkAll" id="checkAll" value="">
<input type="checkbox" name="chk_item" value="1">1
<input type="checkbox" name="chk_item" value="2">2
<input type="checkbox" name="chk_item" value="3">3
<input type="checkbox" name="chk_item" value="4">4
<input type="checkbox" name="chk_item" value="5">5
<input type="checkbox" name="chk_item" value="6">6
<input type="checkbox" name="chk_item" value="7">7
<input type="checkbox" name="chk_item" value="8">8
<input type="checkbox" name="chk_item" value="9">9
<input type="checkbox" name="chk_item" value="10">10