User:JackSchmidt/JS Ajax.js

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// Basic AJAX code for wikipedia

// (c) 2007 Jack Schmidt, available under GPL, BSD, or CC-SA

// Obviously this just calls api.php and index.php with arguments.
// Since index.php?action=ajax requires repeated arguments, you can
// give a key=value argument in [ key, value ] form, not just { key: value }
// form.

function JS_PHP( php, args, id, callback ) {
  var http;
  var url = mw.config.get('wgServer') + mw.config.get('wgScriptPath') + '/' + php;
  for ( var k in args ) {
    if( typeof args[k] == typeof [] ) {
    url += ((url.indexOf("?")==-1)?"?":"&") + encodeURIComponent( args[k][0] ) + "="
           + encodeURIComponent( args[k][1] );
    } else
    url += ((url.indexOf("?")==-1)?"?":"&") + encodeURIComponent( k ) + "=" + encodeURIComponent( args[k] );
  }
  http = sajax_init_object();
  http.open( 'GET', url, true );
  http.onreadystatechange = function() { return JS_Callback( http, id, callback ); }
  http.send( null );
}
function JS_API( args, id, callback ) { return JS_PHP( 'api.php', args, id, callback ); }
function JS_INDEX( args, id, callback ) { return JS_PHP( 'index.php', args, id, callback ); }
function JS_QUERY( args, id, callback ) { return JS_PHP( 'query.php', args, id, callback ); }
function JS_Callback( http, id, callback ) {
  if ( !http ) return;
  if ( http.readyState != 4) return;
  if ( http.status != 200 ) return;
  try { callback( id, http.responseXML ? http.responseXML : http.responseText ); } catch (e) { }
};