In Ruby you may say:

n = 10_000 

or

n = 10000 

They are identical. I think you can also do something like this in Perl. This is a very nifty thing, to make large numbers more human readable.

My question is really two parts:

1. Is there a Javascript equivalent? Because I would definitely use it.

2. What do you call this underscore character, syntactically? I bet an experienced programmer can field this pretty easily, but I'm having a heck of a time trying to use the internet for a reverse dictionary. Such information I think would be useful to me in learning future languages. And it's absolutely driving me crazy, that I don't know how to describe it.

In Ruby you may say:

n = 10_000 

or

n = 10000 

They are identical. I think you can also do something like this in Perl. This is a very nifty thing, to make large numbers more human readable.

My question is really two parts:

1. Is there a Javascript equivalent? Because I would definitely use it.

2. What do you call this underscore character, syntactically? I bet an experienced programmer can field this pretty easily, but I'm having a heck of a time trying to use the internet for a reverse dictionary. Such information I think would be useful to me in learning future languages. And it's absolutely driving me crazy, that I don't know how to describe it.

• javascript
• syntax
• integer

• 1) No. 2) "Place separator", perhaps? – r3mainer Commented Dec 3, 2013 at 11:44

2 Answers 2

Numeric Separators are now a feature of Javascript. (