Why cant i convert this arr
let stringarr = "[2022/07/12, 2022/08/09]"
to this arr
let arr = JSON.parse(stringarr) ---> error
Unexpected token / in JSON at position 5
It's not valid JSON, since the array elements aren't quoted.
If the array elements are all dates formatted like that, you could use a regular expression to extract them.
let stringarr = "[2022/07/12, 2022/08/09]" let dates = stringarr.match(/\d{4}\/\d{2}\/\d{2}/g); console.log(dates);
what can i do then to convert it to an array
There are several ways to do that, if the format of the string stays like this. Here's an idea.
console.log(`[2022/07/12, 2022/08/09]` .slice(1, -1) .split(`, `));
Or edit to create a valid JSON string:
const dateArray = JSON.parse( `[2022/07/12, 2022/08/09]` .replace(/\[/, `["`) .replace(/\]/, `"]`) .replace(/, /g, `", "`)); console.log(dateArray);
Or indeed use the match
method @Barmar supplied.
It's to much simple 😄.
As your input is a valid array in string format. So, remove [ ] brackets and split with comma (,). Then it automatically generates an array.
let stringarr = "[2022/07/12, 2022/08/09]";
let arr = stringarr.replace(/(\[|\])/g, '').split(',');
Output:
['2022/07/12', ' 2022/08/09']
const regexp = /\d+\/\d+\/\d+/g; const stringarr = "[2022/07/12, 2022/08/09]"; const arr = [...stringarr.matchAll(regexp)]; console.log(arr)
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