How to check if the string contains a number in js without regular expressions?

Question

How to check if the string contains a number in javascript without regular expressions ?

Does this answer your question? [How to check whether a string contains a substring in JavaScript?](https://stackoverflow.com/questions/1789945/how-to-check-whether-a-string-contains-a-substring-in-javascript) — Nilanka Manoj, Apr 26 '20 at 13:50
What is your reasoning for not wanting to use a regular expression? — charlietfl, Apr 26 '20 at 13:56

Luv · Answer 1 · 2020-04-26T13:52:54.393

0

Try

str.indexOf(number.toString()) > -1

edited Apr 26 '20 at 13:52

answered Apr 26 '20 at 13:46

Luv

score -1 · Answer 2 · answered Apr 26 '20 at 14:03

-1

You can check as follows:

if (mystring.indexOf(21) >= 0){
    // Contains number 21
}

answered Apr 26 '20 at 14:03

Lore

2 Answers2