NodeJS String format like Python?

Question

In python, I can do the following:

name = "bob"

print("Hey, %s!" % name)

Is there anything similar to that (or Python's .format()) in JavaScript/NodeJS?

Duplicate of http://stackoverflow.com/questions/610406/javascript-equivalent-to-printf-string-format — ubik, May 28 '12 at 17:36
You may consider using CoffeeScript it uses whitespace for block delimition like Python and has also list comprehensions. It doesn't provide string formatting but you can interpolate e.g. console.log("Hey, #{name}!") — denysonique, May 29 '12 at 02:19

Alex Ivasyuv · Answer 1 · 2018-05-08T15:35:44.047

15

You can use util.format, it's printf like function.

edited May 08 '18 at 15:35

answered Aug 21 '13 at 17:10

Alex Ivasyuv

score 6 · Answer 2 · answered Dec 07 '18 at 09:22

6

Another option is template strings

For example:

const name = "bob";
console.log(`Hey, ${name}!`);

answered Dec 07 '18 at 09:22

nickool

score 2 · Accepted Answer · answered May 28 '12 at 17:35

2

sprintf should do what you are asking for I think.

answered May 28 '12 at 17:35

Jakob Bowyer

1

But that just prints it, doesn't it? What if I want to do something like `socket.send("NOTICE #channel :My name is %s" %(bot.name));`? – May 28 '12 at 17:44
No? I didn't think so I thought it returned a string – Jakob Bowyer May 28 '12 at 17:45
1

AFAIK sprintf is not part of node. It used to be a package, deprecated now. Answer by @Alex below should be considered valid. – Overdrivr Oct 27 '17 at 13:01
The link is broken. This one should work: https://www.npmjs.com/package/sprintf-js – Guigreg Oct 08 '20 at 22:08

3 Answers3