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Last active August 29, 2015 14:01
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ArgParser: Get arguments passed through the URL for an external script

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.

f = function (a, u, e) { /*
a = a list of elements through document.querySelectorAll() (or $$ shorthand), e.x. $$('script')
u = the URL of the external script to find arguments from
e = an empty array (for saving two characters in the code)
*/
b = 0; // Counter variable
while (a[b]) // Looping through the list of elements, stop when we've reached the end
if ((c = a[b++].src.split('#'))[0] == u && /* Let c be the src attribute of the element, then split by # (which denotes the start of arguments)
Check if the first value in that array (the non-arguments part) is the URL specified */
(j = c[1])) /* Check if there is a hash present, assign to j */
for (i in g = j.split('&')) // Loop through each key=value pair, split by &s
e[(h = g[i].split('='))[0]] = h[1]; // Set e[key] equal to value
return e // Return the filled array
}
f=function(a,u,e){b=0;while(a[b])if((c=a[b++].src.split('#'))[0]==u&&(j=c[1]))for(i in g=j.split('&'))e[(h=g[i].split('='))[0]]=h[1];return e}
//var url = 'example.js';
var url = location.href.replace("test.html","example.js");
args = f(document.querySelectorAll('script'), url, {});
args.message = args.message.replace(/\+/g, ' ');
if(args.message) {
if(args.to) console.log(args.message+", "+args.to+"!");
else console.log(args.message+", stranger!");
}
console.log(args);
f=function(a,u,e){b=0;while(a[b])if((c=a[b++].src.split('#'))[0]==u&&(j=c[1]))for(i in g=j.split('&'))e[(h=g[i].split('='))[0]]=h[1];return e}
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
Version 2, December 2004
Copyright (C) 2014 James Woglom <wogloms.com>
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": "ArgParser",
"description": "Parses arguments passed to an external script in the URL of the src attribute when it is included. So, basically, you can specify and access arguments for an external javascript file.",
"keywords": [
"arguments",
"hash",
"query",
"external",
"parser",
"query string"
]
}
<!DOCTYPE html>
<title>ArgParser</title>
<script>
// write a small example that shows off the API for your example
// and tests it in one fell swoop.
</script>
<script src="example.js#message=Hello+World&to=User"></script>
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