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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

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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.

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For more information

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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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