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From what I read, the author uses double quotes for string literals, "some string". Most of the style guides and linters recommend using single quotes, any ide

From what I read, the author uses double quotes for string literals, "some string". Most of the style guides and linters recommend using single quotes, any idea on the advantage of each?

grncdr 10y ago
There is no difference in JavaScript, they have the same semantics & meaning. However, single quotes have two advantages (IMO, since this is obviously subjective): 1. can be typed without shift on US keyboard layout 2. I use double quotes inside string literals (e.g. for quoting bad input in error messages) more often than single quotes (mostly used for contractions) so not having to escape double quotes by default is convenient. Standard (and I guess eslint?) support "single quotes unless a single quote appears in the string", which is ideal (for me).
- paulddraper 10y ago
  Also, double quotes are in HTML attributes, and JS can be embedded in HTML attributes and vice versa (though it's less common nowadays)
  - TheAceOfHearts 10y ago
    HTML supports both single-quotes and double-quotes.
    - paulddraper 10y ago
      True, and XML as well. But double-quotes are by far the norm. (Why? I don't know... :)
renke1 10y ago
I do use double quotes in my JS projects, mostly out of habit though. One reason I can think of why people use double quotes is because JSON only supports double quotes and it's not uncommon to deal with JSON when you program in JS.
- darth_mastah 10y ago
  And they write stringified JSON in their source code? Hm...
__mp 10y ago
I prefer double quotes to single quotes to strings: When you write C and C++ a single quote generates a character 8 byte literal. A double quote is a string an array of characters.
- ChristianGeek 10y ago
  8 bit.
  - __mp 10y ago
    Thanks :). I must have been somewhere else.
lloyd-christmas 10y ago
JQuery uses double quotes in their style guide. That might be where it comes from. http://contribute.jquery.org/style-guide/js/#quotes http://contribute.jquery.org/style-guide/js/#quotes
sigzero 10y ago
To me, visually, I pick up "this is a string" faster with the double quotes.
ajeet_dhaliwal 10y ago
The latest version of JSLint recommends using double quotes. It complains unless you use the Single option.

From what I read, the author uses double quotes for string literals, "some string". Most of the style guides and linters recommend using single quotes, any idea on the advantage of each?

grncdr 10y ago

There is no difference in JavaScript, they have the same semantics & meaning. However, single quotes have two advantages (IMO, since this is obviously subjective): 1. can be typed without shift on US keyboard layout 2. I use double quotes inside string literals (e.g. for quoting bad input in error messages) more often than single quotes (mostly used for contractions) so not having to escape double quotes by default is convenient. Standard (and I guess eslint?) support "single quotes unless a single quote appears in the string", which is ideal (for me).

paulddraper 10y ago
Also, double quotes are in HTML attributes, and JS can be embedded in HTML attributes and vice versa (though it's less common nowadays)
- TheAceOfHearts 10y ago
  HTML supports both single-quotes and double-quotes.
  - paulddraper 10y ago
    True, and XML as well. But double-quotes are by far the norm. (Why? I don't know... :)

renke1 10y ago

I do use double quotes in my JS projects, mostly out of habit though. One reason I can think of why people use double quotes is because JSON only supports double quotes and it's not uncommon to deal with JSON when you program in JS.

darth_mastah 10y ago
And they write stringified JSON in their source code? Hm...

__mp 10y ago

I prefer double quotes to single quotes to strings: When you write C and C++ a single quote generates a character 8 byte literal. A double quote is a string an array of characters.

ChristianGeek 10y ago
8 bit.
- __mp 10y ago
  Thanks :). I must have been somewhere else.

lloyd-christmas 10y ago

JQuery uses double quotes in their style guide. That might be where it comes from. http://contribute.jquery.org/style-guide/js/#quotes http://contribute.jquery.org/style-guide/js/#quotes

sigzero 10y ago

To me, visually, I pick up "this is a string" faster with the double quotes.

ajeet_dhaliwal 10y ago

The latest version of JSLint recommends using double quotes. It complains unless you use the Single option.