How to cut part of string in vanilla js to send like as parameter on API

Question

I have a little problem with this url.

I want to get only the numbers on the first drop down and send it like as paramater on API.

I create a object with properties:

const dataAPI = { nameStation: '', nameStationNumber: '', dateStation: '', dataHours: '' }

and I want dataAPI.nameStationNumber to save only a number of clicked value.

With this code I get only this string for example:

Chepelarska - 18694 - HPoint-Water level 

dataAPI.nameStation = e.target.innerHTML.replace(/.*\+\s?/, '');

How can I cut only 18694 from река Чепеларска - гр. Асеновград + Chepinska - 10084 - HPoint-Water level

Can I get example how to do that ?

Does this answer your question? [How can I extract a number from a string in JavaScript?](https://stackoverflow.com/questions/10003683/how-can-i-extract-a-number-from-a-string-in-javascript) — Justinas, Feb 13 '23 at 08:33

score 1 · Answer 1 · answered Feb 13 '23 at 08:46

If you want to extract the first number from a string do this:

const input = 'река Чепеларска - гр. Асеновград + Chepinska - 10084 - HPoint-Water level';
let result = input.replace(/^[^0-9]*([0-9]*).*$/, '$1');
console.log(result);

Explanation of regex:

^ -- anchor at start of string
[^0-9]* -- scan over anything not a digit
([0-9]*) -- capture group with all digits
.*$ -- anything left over
replacement uses the capture group: '$1'

score 1 · Accepted Answer · answered Feb 13 '23 at 08:53

1

Use regex /[^\d]+/ (replace [^] anything that does not match \d (number))

let string = 'река Чепеларска - гр. Асеновград + Chepinska - 10084 - HPoint-Water level';
let result = string.replace(/[^\d]+/g, '');
console.log(result);

answered Feb 13 '23 at 08:53

Justinas

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It's worth pointing out that this will fail if you have two or more numbers in a string, it will concatenate all digits – Peter Thoeny Feb 13 '23 at 16:46

How to cut part of string in vanilla js to send like as parameter on API

2 Answers2