Please explain about quotes in the JavaScript language

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When to Use Double or Single Quotes in JavaScript

I am study JavaScript. I don't understand With JavaScript When we use " " and when we use ' ' ?Please explain for me.

googling for `single or double quote in javascript` returned http://stackoverflow.com/questions/242813/when-to-use-double-or-single-quotes-in-javascript — ninjagecko, Jul 13 '11 at 05:45

score 4 · Answer 1 · answered Jul 13 '11 at 05:42

It doesn't really matter. For the most part is about whether you are using one type of quote inside another.

As an example (all of these are true):

"foo" == 'foo'
"hi \"there\"" == 'hi "there"'
"what's up?" == 'what\'s up?'
"\"eat\" at Joe's" == '"eat" at Joe\'s'

score 1 · Answer 2 · answered Jul 13 '11 at 05:41

1

For the most part, it doesn't matter which you use. Both indicate a text constant.

As far as explaining the entire language, I think you'll need a book for that.

answered Jul 13 '11 at 05:41

Jonathan Wood

score 1 · Answer 3 · answered Jul 13 '11 at 05:43

1

They basically are arbitrary, but you can nest one inside the other without issues for example: "hello 'world'"

normally you would have to do "hello \"world\""

answered Jul 13 '11 at 05:43

switz

score 0 · Answer 4 · answered Jul 13 '11 at 05:41

0

You can use both as soon as it's consitent.

So 'abc' and "abc" are valid and are the same.

While 'abc" and "abc' are not valid.

answered Jul 13 '11 at 05:41

Petar Ivanov

score 0 · Answer 5 · answered Jul 13 '11 at 05:49

0

As my opinion, they're no big difference. The only rule is:

var s = 'I can contain " " without \ ';
var s = "I can contain ' ' without \ ";

answered Jul 13 '11 at 05:49

user842031

Well, you've answered the question, which is good. But you've not added any new information, which is bad. If you don't have anything new to contribute, just vote for one of the previous answers instead. – james.garriss Jul 13 '11 at 18:14

5 Answers5