//选中所有
	function selectAllOrderFunc() {
		var selectedAll = $("#all").attr("checked");
		if(selectedAll == "checked") {
			$("#inspectMaterialTrailerBodyLeft tr td input[type='checkbox']").each(function() {
				$(this).attr("checked",true);
			});
		} else {
			$("#inspectMaterialTrailerBodyLeft tr td input[type='checkbox']").each(function() {
					$(this).removeProp("checked");
			});
		}
	}

	<!-- 公司的写法，全选， -->
						<th style="width:80px;" rowspan = "2" class="checkBox">
							<input type="checkBox" name='selectColumnAll' >
						</th>

//全选
$("#selectAll").click(function(){
$("[name=items]:checkbox").each(function(){
$(this).attr("checked",true);
});
});

 

//全不选
$("#unSelect").click(function(){
$("[name=items]:checkbox").each(function(){
$(this).attr("checked",false);
});
});