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JavaScript - create array from for loop
1 answers
0 points
I have a range stored into two variables and I want to create an array within the range.
Something like this:
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const start = 10;2
const end = 20;3
4
const array = [];5
6
for (let i = start; i < end; i++) {7
8
const object = {9
// ...10
};11
12
array.push(object);13
}What should I put inside the object to make it work?
The result I'd like to get would be:
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array = [10, 11, 12, , 20] 1 answer
0 points
ES6+ solution
You can use Array() constructor to create array, then fill() and map() methods to fill the array with the values in range:
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let start = 10;2
let end = 20;3
4
const years = Array(end - start + 1)5
.fill()6
.map(() => start++);7
8
console.log(years);Solution for older versions
This solution uses a simple while loop to push values in range inside the array.
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var start = 10;2
var end = 20;3
4
var array = [];5
6
while (start < end + 1) {7
array.push(start++);8
}9
10
console.log(array);
References
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