How to check if a string contains all the elements of an array in Javascript

Question

I have a string apple_mango_banana and an array containing [apple,mango].

I want to check if my string contains all of the elements present in the array, if so, I want to show a div with the same ID as my string.

Answer 1

Use every() function on the arr and includes() on the str; Every will return true if the passed function is true for all it's items.

var str = 'apple_mango_banana';
var arr = ['apple','banana'];

var isEvery = arr.every(item => str.includes(item));

console.log(isEvery);