Check if an array of arrays contains a value in javascript

Question

I know that if there is an array of values it must be used this approach:

console.log(['joe', 'jane', 'mary'].includes('jane')); // true

But in case of an array of arrays, is there a short way to do it? Without other computations between.

For this input:

[['jane'],['joe'],['mary']]

Answer 1

You can use flat method to flatten the array. For more neted array, you can also mention depth like flat(depth)

let arr = [["jane"],["joe"],["mary"]];

arr.flat().includes('jane'); //true

Answer 2

You can easily achieve this result using some

arr.some((a) => a.includes("jane"))

 const arr = [ ["jane"], ["joe"], ["mary"] ]; const arr2 = [ ["joe"], ["mary"] ]; console.log(arr.some((a) => a.includes("jane"))); console.log(arr2.some((a) => a.includes("jane")));

Answer 3

it can also be done by first flattening the 2d arrays in 1 d aaray and then using includes to find whether the array contains the element or not

var arr = [['jane'],['joe'],['marry']]
var newarr=[].concat(...arr)
var v=newarr.includes('jane')
console.log(v)