Why showing error in my code ?

Question

https://code.sololearn.com/WBP0A0t82X6A/?ref=app

Answer 1

because you use global variables, and global variables are properties of 'window'...

as 'window' object has a still a property named 'name', wich is used to hold a string, any value assigned to it would be casted to a string.

String objects have a match method, while Number object doesn't have such method (regex are used only on String).

that's the reason why storing a number to the variable 'name' (despite the 'var' declaration) cast it to a string, and allow to call 'match' method on it ;)

Answer 2

It's mean name is a global variable and it has string property.
Do you have another way to assign value in number variable.

Answer 3

Thanks buddy

Answer 4

'name' is a builtin property of 'window', so its scope is the global scope... you can access it either by 'name', 'window.name', or even 'window["name"]...

it's a kind of getter/setter wich convert any thing assigned to it as string:

https://developer.mozilla.org/en-US/docs/Web/API/Window/name

if you declare a variable in a local scope, then 'name' will refer to your 'normal' variable (but you still can access the property of 'window' through dot/bracket notation ;)

in js all variable are usually duck typing, do I don't understand what you mean by "another way to assign value in NUMBER variable"?