How can I determine if an element isn't in an array?

Question

I have this:

$.inArray(tld, tldsArray)

I would like to check if tld is NOT on the array. How can we say this on jQuery?

Answer 1

See if the result is -1 like this:

if($.inArray(tld, tldsArray) == -1) {
 //not in the array
}

You should not use if(!$.inArray(tld, tldsArray)) since $.inArray() returns the position in the array, including 0 if it's the first element.

• Luca Matteis: @Nick, not really, I feel like it's ironic to see someone getting annoyed about something so insignificant

Answer 2

As stated in the documentation, the inArray method returns -1 when the element is not found in the array. So simply test the returned value against -1.