JSON对象为空后，表单未提交

At the begining I return false for form submittion

$("#Login").submit(function () {
    return false;
});

And when 1 condition met

$.post(url,data,function(resp)
{
    $('#'+id).parent().find('.alert-danger').remove();
    if(resp === " ")
    {
        $("#Login").submit(function () {
        return true;
        });
        console.log("Dang");
    }

I want when object resp is empty to turn form submition to true and when hitting Submit Button, form should submit.

Change:

if(resp === " ")

To:

if(resp === "")

Change resp === " " to resp === ""