Is, this way to map an array, functional programmimg, mumble jumbo, or, could have some application?

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP


Is, this way to map an array, functional programmimg, mumble jumbo, or, could have some application?



It appears that all this code does is to add a number value '100'
to each of the elements in the array, Am I missing something?


let ray = [10, 20, 30];

function demo(arg1, arg2){
return arg1.call(this, function(ele){return ele + arg2;});
}

let resultarr = demo.call(ray, Array.prototype.map, 100);
console.log(resultarr);









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