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 · Array .filter() with a nested call to .find() will return all elements in the first array that are members of the second array. Check the length of the returned array to determine if any of the …

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

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?

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 …

May 25, 2016 · 72 How can I check if a string contains any element of an array? I want to filter some array if the element has some string. Please see below code.

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 …

Dec 8, 2015 · I need to check if an array contains another array. The order of the subarray is important but the actual offset it not important. It looks something like this: var master = [12, 44, 22, 66, 222,...

Mar 9, 2018 · Javascript: Using `.includes` to find if an array of objects contains a specific object Asked 7 years, 11 months ago Modified 2 years, 11 months ago Viewed 42k times

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