Check if value in array (include is not a function) [duplicate]

Question

How to write if include? condition in JavaScript?

My sample code is here:

var a = ['red', 'green', 'blue', 'yellow'];
if (a.include("red" ))
{ 
    alert(a);
}

It gives the following error:

SyntaxError: missing : in conditional expression

Answer 1

You can use $.inArray() in jQuery

$(function(){
var a = ['red', 'green', 'blue', 'yellow'];
if ($.inArray( "red", a )>=0)
{ 
    alert(a);
}
});

Demo