Create variables with for loop

Question

I'm trying to create 20 functions stored in variables. Each one adds a specific amount of numbers to another quantity. Here's an example:

function creaSuma(x){
    return function(y){
        return x + y;
    }
}

for(let i=1; i<21; i++){
    add+1=creaSuma(i); //this doesn't work. How would you change it?
}

In this case:

console.log(add15(10));

the output should be 25

So, how would I create those 20 variables without creating an array? (I tried it and it works) Thank you, it is just out of curiosity.

Use an object and let these be dynamic properties/fields of the object. — fiveelements, Aug 14 '19 at 17:25
Why do you need these functions at all? There is usually no sense in keeping a few closures around. Why not `add(15, 10)` ? — Jonas Wilms, Aug 14 '19 at 17:39

score 0 · Answer 1 · answered Aug 14 '19 at 17:29

0

try the following

function creaSuma(x){
    return function(y){
        return x + y;
    }
}

for(let i=1; i<21; i++){
    window['add' + i] = creaSuma(i); //this doesn't work. How would you change it?
}

console.log(add15(10));

will output 25

I'm using window for dynamic variable namings, as it has a reference to all global variables and global functions you are using.

You can alternatively use the same approach but with a custom object.

answered Aug 14 '19 at 17:29

Basel Issmail

3,847
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1

this looks exactly like the solution I have already mentioned in the comment :) – fiveelements Aug 14 '19 at 17:32
Not for the first part where I'm using the global **window** object so it would be stored as normal variables. :) – Basel Issmail Aug 14 '19 at 17:34

score 0 · Answer 2 · answered Aug 14 '19 at 17:31

0

As I mentioned in the comment to the original post, use an object and let these be dynamic properties/fields of the object.

Here is your modified code:

function creaSuma(x) {
    return function (y) {
        return x + y;
    }
}
var x = function () {

}
for (let i = 1; i < 21; i++) {
    x['add' + i] = creaSuma(i); //this doesn't work. How would you change it?
}

console.log(x.add15(10));

answered Aug 14 '19 at 17:31

fiveelements

3,649
1
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16

Thank you for your answer!!! – ElRafita 1548 Aug 14 '19 at 18:02

Create variables with for loop

2 Answers2