This function is handy when working with Google App Script for Spreadsheets and you need to get an array out of the 2-dimensional getValues() call. In fact, you may want to look at this performance test and see that running indexOf on array data may be quite slow in comparison to their for-loop and while-loop counterparts as seen here: http://js…

getElementFrom2dArray.js

function findElem( el ) {
  return !!~el.indexOf( this.val );
}

// for example:

var arr = [ [ 18, "AAA" ], [ 19, "BBB" ], [ 20, "CCC" ] ];
var query = 19;
 
console.log( arr.filter( findElem, { val: query } ) ); // returns [[19, "BBB"]]