Zero in JavaScript

Question

I found instantly that "0" cold not be the first number of "var" value
& It makes sense for me

Answer 1

//Because "zero" has null value in numeric form, unless you declare it as string var x ="01"

Answer 2

ما ممكن الا لو االمتغير بتاعك string
var num=" 0966"

Answer 3

Cool I got that