Server : Apache/2.4.41 (Ubuntu) System : Linux absol.cf 5.4.0-198-generic #218-Ubuntu SMP Fri Sep 27 20:18:53 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.33 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /proc/self/root/usr/local/lib/node_modules/browserify/node_modules/defined/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

# defined

return the first argument that is `!== undefined`

[![browser support](http://ci.testling.com/substack/defined.png)](http://ci.testling.com/substack/defined)

[![build status](https://secure.travis-ci.org/substack/defined.png)](http://travis-ci.org/substack/defined)

Most of the time when I chain together `||`s, I actually just want the first
item that is not `undefined`, not the first non-falsy item.

This module is like the defined-or (`//`) operator in perl 5.10+.

# example

``` js
var defined = require('defined');
var opts = { y : false, w : 4 };
var x = defined(opts.x, opts.y, opts.w, 100);
console.log(x);
```

```
$ node example/defined.js
false
```

The return value is `false` because `false` is the first item that is
`!== undefined`.

# methods

``` js
var defined = require('defined')
```

## var x = defined(a, b, c...)

Return the first item in the argument list `a, b, c...` that is `!== undefined`.

If all the items are `=== undefined`, return undefined.

# install

With [npm](https://npmjs.org) do:

```
npm install defined
```

# license

MIT