What is the most concise and efficient way to find out if a JavaScript array contains a value? This is the only way I know to do it: function contains(a, obj) { for (var i = 0; i < a.length;...

May 1, 2013 · 1400 Vanilla JS const found = array1.some(r=> array2.includes(r)) How it works some(..) checks each element of the array against a test function and returns true if any element of the array …

When you wrote this answer, the title was “How to determine if Javascript array contains an object with an attribute that equals a given value?”. You’re checking if an object has a property on its prototype …

Oct 9, 2014 · Is there an easy way of knowing if and array contains all elements of another array? Example: var myarray = [1,2,3]; var searchinarray = [1,2,3,4,5]; searchinarray contains all elements …

Jul 25, 2009 · $.inArray(value, array) Returns index of value in array. Returns -1 if array does not contain value. See also How do I check if an array includes an object in JavaScript?

Mar 9, 2018 · Javascript: Using `.includes` to find if an array of objects contains a specific object Asked 7 years, 11 months ago Modified 3 years ago Viewed 42k times

72 This question already has answers here: Javascript: Using `.includes` to find if an array of objects contains a specific object (7 answers)

Apr 7, 2011 · Pretty straight forward. In javascript, I need to check if a string contains any substrings held in an array.

How to find if an array contains a specific string in JavaScript/jQuery? Asked 14 years, 9 months ago Modified 1 year, 5 months ago Viewed 1.3m times

811 This question already has answers here: How do I check if an array includes a value in JavaScript? (64 answers)