I am working with an array where each element is another array:
var array = [
[0,1],
[0,2],
[0,3],
[0,0]
];
However, when I try to use the indexOf method on this array like so: array.indexOf([0,1]); it returns -1.
I am working with an array where each element is another array:
var array = [
[0,1],
[0,2],
[0,3],
[0,0]
];
However, when I try to use the indexOf method on this array like so: array.indexOf([0,1]); it returns -1.
One way to find the index of an array element based on a custom equality comparison is using Array#findIndex.
var arr = [
[2,5],
[3,8],
[1,7],
[4,6]
];
function compare(arrA, arrB){
return arrA.length === arrB.length && arrA.every((elem, index)=>elem === arrB[index]);
}
let targetArr = [1, 7];
let indexFound = arr.findIndex(element => compare(element, targetArr));
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