2 dimensional array index of element value
let a = [ [ 'bird' ], [ 'cat' ], [ 'dog' ], [ 'cow' ], [ 'bird' ] ];
let b = _.findIndex(a, function(el) { return el[0] == 'cow'; });
console.log(b);//answer is 32 dimensional array index of element value
let a = [ [ 'bird' ], [ 'cat' ], [ 'dog' ], [ 'cow' ], [ 'bird' ] ];
let b = _.findIndex(a, function(el) { return el[0] == 'cow'; });
console.log(b);//answer is 3Copyright © 2021 Codeinu
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