Question

Basically I have a jQuery wrapped set and a date and what I want is to validate if the date does not exist on the wrapped set.

What I am trying is the following:

    var selectedTourDate = $("#tourDate").val();

    var isDateBooked = $("#bookedTourDate *").each(function () {
        if (this.innerHTML == selectedTourDate) return true;
        else return false;
    });

    if (isDateBooked) alert("Date invalid");

But the isDateBooked contains some sort of function:

jQuery.fn.jQuery.init[1]

How would the correct way to accomplish this be?

Answer 1

In your code, isDateBooked is a jQuery object, which will always return true. You need to test the .length of a jQuery object to determine if there’s anything interesting inside of it.

I think what you want to do is replace .each with .filter, and then test the length of the resulting jQuery object:

var selectedTourDate = $("#tourDate").val();

var $isDateBooked = $("#bookedTourDate *").filter(function () {
    if (this.innerHTML == selectedTourDate) return true;
    else return false;
});

if ($isDateBooked.length) alert("Date invalid");