Edit - Stack Overflow

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

Works! The double pipes line basically means, create a new array if it doesn't exist yet, and avoids having to use an if() statement? Never seen that before, thanks.

stef
– stef

2013-09-02 12:49:51 +00:00
Commented Sep 2, 2013 at 12:49
Double pipes line is the logical OR operator [developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…. This usage is a common way to provide defaults. Use with care though, because any falsy value will be overwritten with the default, not just undefined or null. In this case you have no worries, because arrays are always truthy.

Tibos
– Tibos

2013-09-02 12:54:01 +00:00
Commented Sep 2, 2013 at 12:54
I knew double pipes = OR, just wondering what it meant in this context. Thanks again for your help.

stef
– stef

2013-09-02 12:58:42 +00:00
Commented Sep 2, 2013 at 12:58

Add a comment |

Correct minor typos or mistakes
Clarify meaning without changing it
Add related resources or links
Always respect the author’s intent
Don’t use edits to reply to the author

create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)

<https://example.com>

[example](https://example.com)

<a href="https://example.com">example</a>

formatting help »
answering help »

Collectives™ on Stack Overflow