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@Evghenusi
Forked from 140bytes/LICENSE.txt
Created January 26, 2012 14:58
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4 in 1 Select

140byt.es

A tweet-sized, fork-to-play, community-curated collection of JavaScript.

How to play

  1. Click the Fork button above to fork this gist.
  2. Modify all the files to according to the rules below.
  3. Save your entry and tweet it up!

Keep in mind that thanks to the awesome sensibilities of the GitHub team, gists are just repos. So feel free to clone yours and work locally for a more comfortable environment, and to allow commit messages.

Rules

All entries must exist in an index.js file, whose contents are

  1. an assignable, valid Javascript expression that
  2. contains no more than 140 bytes, and
  3. does not leak to the global scope.

All entries must also be licensed under the WTFPL or equally permissive license.

For more information

See the 140byt.es site for a showcase of entries (built itself using 140-byte entries!), and follow @140bytes on Twitter.

To learn about byte-saving hacks for your own code, or to contribute what you've learned, head to the wiki.

140byt.es is brought to you by Jed Schmidt, with help from Alex Kloss. It was inspired by work from Thomas Fuchs and Dustin Diaz.

function(
s //selector like "name", "#name", ".name" or "$name" for search tags by attribute name
//the "$" sign can be replaced by any other, but that they were less than "@"
) {
return document['getElement' + ({
'#': 'ById',
'.': 'sByClassName',
$: 'sByName'
}[c=s[0]] || 'sByTagName')](s.substr(c < '@'))
}
function(s){return document['getElement'+({'#':'ById','.':'sByClassName',$:'sByName'}[c=s[0]]||'sByTagName')](s.substr(c<'@'))}
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
Version 2, December 2004
Copyright (C) 2012 Evghenusi
Everyone is permitted to copy and distribute verbatim or modified
copies of this license document, and changing it is allowed as long
as the name is changed.
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. You just DO WHAT THE FUCK YOU WANT TO.
{
"name": "4 in 1 Select",
"description": "select DOM elements by ID, tag name, class name or attribute name",
"keywords": [
"dom",
"css",
"id",
"class",
"tag",
"name"
]
}
<!DOCTYPE html>
<title>Foo</title>
<p name="p">1</p>
<p class="p">2</p>
<p id="p">3</p>
<p name="p">4</p>
<p class="p">5</p>
<p name="p">6</p>
<script>
var $ = function(s){return document['getElement'+({'#':'ById','.':'sByClassName',$:'sByName'}[c=s[0]]||'sByTagName')](s.substr(c<'@'))}
alert($('#p').innerHTML);
alert($('.p').length);
alert($('$p').length);
alert($('p').length);
</script>
@maettig
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maettig commented Jan 27, 2012

There are a few "select element(s) by everything" functions at 140byt.es, for example selector140 by @techpriester, cssSelect by @jed or my getFirstElement, but adding byName is new.

PS: Save a byte by replacing substr with slice.

@Evghenusi
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@tsaniel
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tsaniel commented Jan 27, 2012

Combined with @maettig 's advice, save 5 bytes.
function(s){return document['getElement'+({'#':'ById','.':'sByClassName','$':'sByName'}[c=s[0]]||'sByTagName')](s.slice(c<'@'))}

@Evghenusi
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wow, stunningly

@tsaniel
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tsaniel commented Jan 27, 2012

Also the variable c leaks into global scope, we can use one byte to get rid of that.
function(s){return document['getElement'+({'#':'ById','.':'sByClassName','$':'sByName'}[s[0]]||'sByTagName')](s.slice(s[0]<'@'))}

@Evghenusi
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when I added was the excess bytes)

@tsaniel
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tsaniel commented Jan 27, 2012

Why? Wasn't your original code just 133bytes?

@Evghenusi
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Two days ago, the code was the size of 146 bytes, then I added variable

code was formed gradually

@xpansive
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You don't need quotes around the dollar sign in the map, saving 2 bytes.
function(s){return document['getElement'+({'#':'ById','.':'sByClassName',$:'sByName'}[s[0]]||'sByTagName')](s.slice(s[0]<'@'))}

@Evghenusi
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thanks, did not think about $

@Evghenusi
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Thank you all for your advice.

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