Comparing a given value against a multi-dimensional array

Question

I really need your help.

I'd like to structure and build an array like the below.:

var provinces = [
    ['Ontario','ON'],
    ['Quebec','QC'],
    ['British Columbia','BC'],
    ['Saskatchewan','SK']
];

then, id like to compare the value (x) against my array, ie:

var x = 'Ontario'

if (x matches the value in the array list 'provinces') { then let x = ON }

How do you write something like this in javascript?

Much thanks and appreciation for all your help,

Answer 1

Use the .filter() function, that receives a true/false return condition to retrieve itens from an array:

 var provinces = [ ['Ontario','ON'], ['Quebec','QC'], ['British Columbia','BC'], ['Saskatchewan','SK'] ]; var x = "Ontario"; //Find if any array item matches the word var result = provinces.filter(function(item) { return item[0] == x; }); //If there's a match, get the second index from the first result from the filter if(result.length > 0) x = result[0][1]; alert(x);