gitweb/static/js/javascript-detection.js

   1 // Copyright (C) 2007, Fredrik Kuivinen <frekui@gmail.com>
   2 //               2007, Petr Baudis <pasky@suse.cz>
   3 //          2008-2011, Jakub Narebski <jnareb@gmail.com>
   4
   5 /**
   6  * @fileOverview Detect if JavaScript is enabled, and pass it to server-side
   7  * @license GPLv2 or later
   8  */
   9
  10
  11 /* ============================================================ */
  12 /* Manipulating links */
  13
  14 /**
  15  * used to check if link has 'js' query parameter already (at end),
  16  * and other reasons to not add 'js=1' param at the end of link
  17  * @constant
  18  */
  19 var jsExceptionsRe = /[;?]js=[01](#.*)?$/;
  20
  21 /**
  22  * Add '?js=1' or ';js=1' to the end of every link in the document
  23  * that doesn't have 'js' query parameter set already.
  24  *
  25  * Links with 'js=1' lead to JavaScript version of given action, if it
  26  * exists (currently there is only 'blame_incremental' for 'blame')
  27  *
  28  * To be used as `window.onload` handler
  29  *
  30  * @globals jsExceptionsRe
  31  */
  32 function fixLinks() {
  33         var allLinks = document.getElementsByTagName("a") || document.links;
  34         for (var i = 0, len = allLinks.length; i < len; i++) {
  35                 var link = allLinks[i];
  36                 if (!jsExceptionsRe.test(link)) {
  37                         link.href = link.href.replace(/(#|$)/,
  38                                 (link.href.indexOf('?') === -1 ? '?' : ';') + 'js=1$1');
  39                 }
  40         }
  41 }
  42
  43 /* end of javascript-detection.js */