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2 dimensional array index of element value

Blushing Bug answered on January 6, 2021 Popularity 6/10 Helpfulness 2/10

answer 2 dimensional array index of element value

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2 dimensional array index of element value

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let a = [ [ 'bird' ], [ 'cat' ], [ 'dog' ], [ 'cow' ], [ 'bird' ] ];
let b = _.findIndex(a, function(el) { return el[0] == 'cow'; });
console.log(b);//answer is 3

Popularity 6/10 Helpfulness 2/10 Language javascript

Source: stackoverflow.com

Tags: dimensional element javascript

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Contributed on Jan 06 2021

Blushing Bug

0 Answers Avg Quality 2/10

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2 dimensional array index of element value

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var arr = [[2,3],[5,8],[1,1],[0,9],[5,7]];
var coor1 = [0, 9];
var coor2 = [1, 2];

function isItemInArray(array, item) {
    for (var i = 0; i < array.length; i++) {
        // This if statement depends on the format of your array
        if (array[i][0] == item[0] && array[i][1] == item[1]) {
            return true;   // Found it
        }
    }
    return false;   // Not found
}

// Test coor1
console.log("Is it in there? [0, 9]", isItemInArray(arr, coor1));   // True

// Test coor2
console.log("Is it in there? [1, 2]", isItemInArray(arr, coor2));   // False

// Then
if (!isItemInArray(arr, [x, y])) {
   arr.push([x, y]);
}

Popularity 4/10 Helpfulness 1/10 Language whatever

Source: coders911.org

Tags: dimensional whatever element

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Contributed on Mar 22 2022

Kind Katipo

0 Answers Avg Quality 2/10

2 dimensional array index of element value

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