How to check if the first character in a string is equal to minus or not equal?

Question

Node.js

How to check if the first character in a string is equal to minus or not equal?
Like if
const str starts with a minus const str = "-2214324141324"
or not

Answer 1

Global_Objects/String
At least six methods allow you to do this

1. Global_Objects/String/charAt
   
2. Global_Objects/String/search
   
3. Global_Objects/String/indexOf
   
4. Global_Objects/String/startsWith
   
5. Global_Objects/String/substring
   
6. Global_Objects/String/match
   

Answer 2

Why not convert to a number and check for less than zero?

Answer 3

You can check the first character.
str[0] == "-"
BUT this is a bad way, since it is not clear in what form the strings come to you, whether there are other characters in the first position.