IndexOf Array in Array | 6 kyu codewars | javascript

????: https://www.codewars.com/kata/5783ef69202c0ee4cb000265 GITLAB == https://github.com/shloch/CODING_PRACTICE/blob/master/Javascript/indexOfArrayInArray.js ??????????? : JavaScript's indexOf does not work with arrays as input. This is because [1,2] === [1,2] will return false in JavaScript. Many other languages have similar quirks. However, sometimes it is useful to search for an Array. Write a function that looks for an array within a two-dimensional array and returns the index of the first matching element. If there is no match, your function should return -1. See some examples: var arrayToSearch = [[1,2],[3,4],[5,6]]; var query = [1,2]; // = 0 query = [5,6]; // = 2 query = [9,2]; // = -1 You will be required to validate the inputs on the following criteria: each element of the array to be searched should be an array; each sub-array in the two-dimensional array should be of length two; and query should be an array of length two. If the inputs are not valid you should throw an Error. See some examples: var arrayToSearch = [[1,2],[3,4],[5,6],[7,8,9]]; // = throw Error arrayToSearch = [1,2,3,4,5,6]; // = throw Error arrayToSearch = [[1,2],[3,4],[5,6]]; // = valid input var query = [1,2]; // = valid input query = 5; // = throw Error query = [9,2,1]; // = throw Error

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