jquery - jQuery check in array and return true or false

Question

I have an array of pages

var $pages = ["events", "template", "privacy", "terms", "mentor", "party", "getinvolved", "tools"];

What I want to do is

  if ( $body[0].id !== anyOfThePageInTheArray ) {
    //do something here
    });

How can I do like if the page that they are on is not one of the page that is in the array.

I have tried .inArray and .each but I think maybe I'm doing it wrong or something.

Answer 1

Try:

if($pages.indexOf($body[0].id) == -1){
    //code here
}

Answer 2

The native Array.indexOf works fine:

if ($pages.indexOf($body[0].id) === -1) {
    // It's not in there
}

But if you insist on jQuery:

if ($.inArray($body[0].id, $pages) === -1) {
    // It's not in there
}

Answer 3

You should use

if($.inArray($body[0].id,$pages) === -1)

When the second argument isn't in the array (first argument), it will return -1. Otherwise, it returns the index of the element.

By the way, $body[0].id returns e.g. "events", or is a number?