Variable Naming Best Practise for JavaScript

Question

I learn from the JavaScript course here that there are 3 ways to name a variable. You should start with:

1. Letter

2. Underscore _

3. Dollar Sign $

So I was wondering if what is the best way or practice for naming variable?

I'm also coding with PHP. and in PHP, you declare variable by using dollar sign $.

I'm thinking of starting practicing and using dollar sign $ for my future JavaScript codes for consistency with PHP but I'm not sure if it is a good practice. if not, any reason why?

I rarely seeing JavaScript codes (or I did not see at all) that uses dollar sign in their variable name, so I was wondering if it is a good practice for the future codes.

Answer 1

just use names that describe, what the variable is for, so you can understand the code later. Don't start with a special character, just write the name

Answer 2

The worst thing that can happen is that you come back after a while and you don't understand your own code. Try to name your variables so that another person could understand your code easily.

Answer 3

thank you for all the tips!