Jquery 操作HTML标签

Jquery 操作Radio ,textarea

var val=$('input:radio[name="invoice.hasSend"]:checked').val();
if(val == '2'){
	var r=confirm("选择否，发票信息将清空，确定？");
  	if (r==true)
    {
    	$('input:radio[name="invoice.invoiceType"]').removeAttr("checked");
    	$('textarea[name="invoice.remark"]').html("");
    	$('input:radio[name="invoice.invoiceType"]').attr("disabled","true");
    	$('textarea[name="invoice.remark"]').attr("disabled","true");
    }else{
    	return;
    } 
}else{
	$('input:radio[name="invoice.invoiceType"]').removeAttr("disabled");
    $('textarea[name="invoice.remark"]').removeAttr("disabled");
}

Jquery动态添加验证

if(cc == 7){
	$("select[name^='register.shipCity']").rules("add", { required: true,maxlength:20});
	$("input[name^='register.shipName']").rules("add", { required: true,maxlength:20});
	$("textarea[name^='register.remark']").rules("add", { maxlength:200});
	$("#invoiceTab").show();
	
}else{
	$("select[name^='register.shipCity']").rules("remove");
	$("input[name^='register.shipName']").rules("remove");
	$("textarea[name^='register.remark']").rules("remove");
	$("#invoiceTab").hide();
}

3.判断Jquery是否验证通过

	var r = $('#user400form').valid();
			//	alert(r);
				if(r){
					$('#btnid').attr({'disabled':true});
					$("#user400form").submit();
				}