NodeJS String format like Python?

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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?

sprintf should do what you are asking for I think.

string-format, String formatting inspired by Python's str.format() Modes. string-format can be used in two modes: function mode and method mode. The format() method formats the specified value(s) and insert them inside the string's placeholder. The placeholder is defined using curly brackets: {}. Read more about the placeholders in the Placeholder section below.

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

NodeJS String format like Python?, NodeJS String format like Python? string-format, String formatting inspired by Python's str.format() Modes. Simple String.format() in javascript (Example), String.prototype.format = function() { a = this; for (k in arguments) { a = a.replace("{​" + k + "}", arguments[k]) } return a }. A protip by avsej about javascript. String.prototype.format = function() { a = this; for (k in arguments) { a = a.replace("{" + k + "}", arguments[k]) } return a }

Another option is template strings

For example:

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

Simple String.format() in javascript (Example), String.prototype.format = function() { a = this; for (k in arguments) { a = a.replace("{​" + k + "}", arguments[k]) } return a }. Usage: console.log("Hello  Python String Formatting Rule of Thumb: If your format strings are user-supplied, use Template Strings (#4) to avoid security issues. Otherwise, use Literal String Interpolation/f-Strings (#3) if you’re on Python 3.6+, and “New Style” str.format (#2) if you’re not.

NodeJS String format like Python?, 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? Python’s str.format() method of the string class allows you to do variable substitutions and value formatting. This lets you concatenate elements together within a string through positional formatting.

util.format() : nodejs API, Returns a formatted string using the first argument as a printf -like format. The first argument is a string that contains zero or more placeholders. Each placeholder  With this site we try to show you the most common use-cases covered by the old and new style string formatting API with practical examples. All examples on this page work out of the box with with Python 2.7, 3.2, 3.3, 3.4, and 3.5 without requiring any additional libraries.

davidchambers/string-format: JavaScript string formatting , string-format. string-format is a small JavaScript library for formatting strings, based on Python's str.format() . For example: > const user = { . firstName: 'Jane', . Before Python 3.6, you had two main ways of embedding Python expressions inside string literals for formatting: %-formatting and str.format(). You’re about to see how to use them and what their limitations are. Option #1: %-formatting. This is the OG of Python formatting and has been in the language since the very beginning.

Comments
  • Duplicate of stackoverflow.com/questions/610406/…
  • 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}!")
  • 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));?
  • No? I didn't think so I thought it returned a string
  • AFAIK sprintf is not part of node. It used to be a package, deprecated now. Answer by @Alex below should be considered valid.