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JavaScript map() is not saving the new elements?
Use the map() function correctly to save elements.
Example
Following is the code −
const addIndexValueToArrayElement = function (arrObject) {
const updatedArrayValue = [];
arrObject.forEach(function (ob) {
const mapValue = ob.map(function (value) {
return value + arrObject.indexOf(ob)
})
updatedArrayValue.push(mapValue)
})
return updatedArrayValue;
};
const output = addIndexValueToArrayElement([
[4, 5],
[7, 56],
[34, 78],
]);
console.log(output);To run the above program, you need to use the below command −
node fileName.js.
Here, my file name is demo323.js.
Output
This will produce the following output −
PS C:\Users\Amit\javascript-code> node demo323.js [ [ 4, 5 ], [ 8, 57 ], [ 36, 80 ] ]
Updated on: 27-Oct-2020
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