So, Basically i was trying to create an object like
{
'1': 0,
'2': 0,
'3': 0,
.....
'9': 0
}
Is there any "javaScriptic" trick to do so?
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Related (but not the same): arrays - Does JavaScript have a method like "range()" to generate a range within the supplied bounds? - Stack Overflow and javascript - How to create an array containing 1...N - Stack Overflowuser202729– user2027292021-02-06 09:21:47 +00:00Commented Feb 6, 2021 at 9:21
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3 Answers
You can use new Array(10) to create an array of 10 items, fill it with 0, and then spread it to an object.
Note: using this method, the first key would be 0, and not 1.
const obj = { ...new Array(10).fill(0) }
console.log(obj)To get an object that starts with 1, you can use destructuring with rest (...) to get an object with all properties, but 0:
const { 0: _, ...obj } = { ...new Array(10).fill(0) }
console.log(obj)
Comments
You could take Object.fromEntries.
const result = Object.fromEntries(Array.from({ length: 10 }, (_, i) => [i + 1, 0]));
console.log(result);
Comments
You could do one-liner like this
Because you want the key to be from 1, so init an array of size 9 and map the value by increased-by-one index. From that, reduce with the start of empty object to get your expected output
const res = Array
.from({ length: 9 }, (_, index) => index + 1)
.reduce((acc, el) => ({ ...acc, [el]: 0 }), {})
console.log(res)