How to get number values from inputs?

Question

I'm trying to recreate the "check if hit" sistem from D&D in a small aplication and I need to get numeric values vrom input fields. Problem is, the normal document.queryselector('.input-class').value, only returns streengs. Any sugestions?

Possible duplicate of [How to convert string into float in JavaScript?](https://stackoverflow.com/questions/642650/how-to-convert-string-into-float-in-javascript) — Calvin Nunes, Aug 27 '19 at 18:54

score 0 · Answer 1 · answered Aug 27 '19 at 18:56

0

Add + before value to convert to the number. Like:

let item = '2019';
assert(+item).toEqual(2019);

If you need some check, function isNaN() can be used after converting to number: https://www.w3schools.com/jsref/jsref_isnan.asp

answered Aug 27 '19 at 18:56

Alex Vovchuk

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score 0 · Accepted Answer · answered Aug 27 '19 at 18:58

0

yes you can cast the string with parseInt():

let text = '42px';
let my_number = parseInt(text, 10);
// returns 42

answered Aug 27 '19 at 18:58

Klienblat Moshe

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How to get number values from inputs?

2 Answers2