How to call public method jquery plugin from outside? -

i read lot undertand not working.

i'm using jquery plugin boilerplate.

i have plugin called "defaultpluginname" , have public method inside plugin:

sayhey: function(){   alert('hey!'); } 

i want call method outsise, that:

$('#test').defaultpluginname('sayhey'); 

but not working, follow here fidle link give better view issue: http://jsfiddle.net/tcxwj/

the method trying call not public need alter plugin in order trigger outside plugin.

see here how can that: https://github.com/jquery-boilerplate/jquery-boilerplate/wiki/another-extending-jquery-boilerplate.

basically need change

$.fn[ pluginname ] = function ( options ) {     return this.each(function() {         if ( !$.data( this, "plugin_" + pluginname ) ) {                 $.data( this, "plugin_" + pluginname, new plugin( this, options ) );         }      }); }; 

to

 $.fn[pluginname] = function ( arg ) {     var args, instance;      // allow plugin instantiated once     if (!( this.data( 'plugin_' + pluginname ) instanceof plugin )) {          // if no instance, create 1         this.data( 'plugin_' + pluginname, new plugin( ) );     }      instance = this.data( 'plugin_' + pluginname );      /*      * because boilerplate support multiple elements      * using same plugin instance, element should set here      */     instance.element = this;      // first parameter object (arg), or omitted,     // call plugin.init( arg )     if (typeof arg === 'undefined' || typeof arg === 'object') {          if ( typeof instance['init'] === 'function' ) {             instance.init( arg );         }      // checks requested public method exists     } else if ( typeof arg === 'string' && typeof instance[arg] === 'function' ) {          // copy arguments & remove function name         args = array.prototype.slice.call( arguments, 1 );          // call method         return instance[arg].apply( instance, args );      } else {          $.error('method ' + arg + ' not exist on jquery.' + pluginname);      }  }; 

then pick method.

hope helps.