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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 ] ]
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