JavaScript: should i use ' or " char to define string?

Question

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What is the difference between ‘ and “ in JavaScript?

Should i use ' or " char, to define a string in javascript?

Is it just a developer's choice? I think, strings more offten contains ' char, so i prefer using of "(with inner " translated to \").

What do you think?

dupe: http://stackoverflow.com/questions/944081/what-is-the-difference-between-and-in-javascript — Philippe Leybaert, Jul 09 '09 at 14:30
See [this previous question](http://stackoverflow.com/questions/944081/what-is-the-difference-between-and-in-javascript) — Philippe Leybaert, Jul 09 '09 at 14:29

score 2 · Answer 1 · answered Jul 09 '09 at 14:26

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I prefer to use ", so after a full day of coding in JavaScript, I don't try to use ' on strings in C#

answered Jul 09 '09 at 14:26

Allen Rice

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When I see single quotes in JavaScript it makes me cringe, unless they are using it for something regarding proper English grammar...I would rather just escape double quotes than use singles. I guess I spent too much time in C, C++ and C# using single quotes always means the char data type to me, not a string. – Jason Bunting Jul 09 '09 at 17:07

Otávio Décio · Answer 2 · 2009-07-09T14:36:43.073

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I normally use the single quote simply because in ASPX it doesn't conflict with double quotes inside serverside scripts (<%= %>). Other than that it is a developer's choice.

edited Jul 09 '09 at 14:36

answered Jul 09 '09 at 14:27

Otávio Décio

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another thing to point out is that if you want " inside of a string you can do it by using '' to enclose the string (and vice-versa) – Ben Scheirman Jul 09 '09 at 14:28
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that wasn't very apparent.. the first one was a double quote, 2nd one single quotes :) – Ben Scheirman Jul 09 '09 at 14:28

score 2 · Answer 3 · answered Jul 09 '09 at 14:28

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Most of the time I use html elements like that :

<input type="button" onclick="alert('test')" />

because of the attribute value has double quotes, I use single quote to represent javascript strings.

answered Jul 09 '09 at 14:28

Canavar

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Obtrusive JavaScript!!! Everyone run away, run away! – Jason Bunting Jul 09 '09 at 16:59

score 2 · Answer 4 · answered Jul 09 '09 at 14:29

It's up to you. Double quotes are more common than single quotes in general, but I'll use single quotes if I have a double quote in my string. I don't force myself to only use double quotes.

var name = "John Doe";
alert('Hello there, "'+name+'", if that is your real name.');

score 1 · Answer 5 · answered Jul 09 '09 at 14:28

1

I also prefer ", but tend to switch to ' if I have strings that contain HTML or XML code. But it's more a matter of taste since, if I remember correctly, ' is allowed in HTML and XML for attributes as well, so you could also do it the other way round.

answered Jul 09 '09 at 14:28

OregonGhost

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score 1 · Answer 6 · answered Jul 09 '09 at 14:28

My personal preference for Python (where, like JS, single and double quotes are equivalent) is for single quotes, just because that way there are "fewer pixels showing" (OK, a somewhat arbitrary criterion;-). But, it IS a matter for a "style guide" (either a personal one or one shared by a group of programmers working on the same codebase) rather than any objective rule.

score 0 · Answer 7 · answered Jul 09 '09 at 14:30

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There are two choices in Javascript solely for the developer to choose whichever is convenient at the time. There is no semantic or syntactic difference, unlike in other languages. So, use both to wild abandon!

answered Jul 09 '09 at 14:30

Adam Luter

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JavaScript: should i use ' or " char to define string?

7 Answers7