PATCH support for IE8

gistfile1.js

(function( $ ){  
    try {
        new XMLHttpRequest().open( "PATCH", "." );
    }
    catch( _ ) { 
        if ( typeof ActiveXObject !== "undefined" ) {
            $.ajaxPrefilter(function(options) {
               if ( options.type === "PATCH" ) {
                   options.xhr = function() {
                       return new ActiveXObject( "Microsoft.XMLHTTP" );
                   }
               }
            });
        }
    }
}( jQuery ));