Semantic-Org/Semantic-UI · warning

The method you called is not defined.

Error message

The method you called is not defined.

What it means

Emitted by Sidebar's invoke() dispatcher (sidebar.js:905) when a string method name does not resolve to any property on the sidebar module instance. Sidebar actually logs this via module.error (sidebar.js:818), a bound console.error gated by settings.silent. It is not a thrown exception.

Source

Thrown at src/definitions/modules/sidebar.js:1023

    bottom    : 'bottom',
    visible   : 'visible'
  },

  selector: {
    fixed   : '.fixed',
    omitted : 'script, link, style, .ui.modal, .ui.dimmer, .ui.nag, .ui.fixed',
    pusher  : '.pusher',
    sidebar : '.ui.sidebar'
  },

  regExp: {
    ios          : /(iPad|iPhone|iPod)/g,
    mobileChrome : /(CriOS)/g,
    mobile       : /Mobile|iP(hone|od|ad)|Android|BlackBerry|IEMobile|Kindle|NetFront|Silk-Accelerated|(hpw|web)OS|Fennec|Minimo|Opera M(obi|ini)|Blazer|Dolfin|Dolphin|Skyfire|Zune/g
  },

  error   : {
    method       : 'The method you called is not defined.',
    pusher       : 'Had to add pusher element. For optimal performance make sure body content is inside a pusher element',
    movedSidebar : 'Had to move sidebar. For optimal performance make sure sidebar and pusher are direct children of your body tag',
    overlay      : 'The overlay setting is no longer supported, use animation: overlay',
    notFound     : 'There were no elements that matched the specified selector'
  }

};


})( jQuery, window, document );

View on GitHub (pinned to 597843ab84)

Solutions

1. Use a documented sidebar method: 'show', 'hide', 'toggle', 'push', 'pull', 'overlay', etc.
2. Confirm the method exists for your installed version.
3. Set silent:true to suppress the message after confirming it is benign.

Example fix

// before
$('.sidebar').sidebar('showw'); // typo -> console.error
// after
$('.sidebar').sidebar('show');

// Validate against sidebar's method list before invoking.
var sidebarMethods = ['show','hide','toggle','push','pull','overlay','is open','is closed','refresh','attach events','destroy','set body color'];
function callSidebar($el, method, args){
  if (sidebarMethods.indexOf(method) === -1) {
    throw new Error('Unknown sidebar method: ' + method);
  }
  return $el.sidebar(method, args);
}

When it happens

Trigger: $('.sidebar').sidebar('showw') (typo) — the dispatcher's lookup (sidebar.js:885-908) finds no matching key and calls module.error(error.method, query).

Common situations: Typo in a method name, using an API from a different Semantic UI version.

Related errors

• The method you called is not defined.
• The method you called is not defined
• The method you called is not defined
• The method you called is not defined.
• The method you called is not defined

AI-assisted analysis of Semantic-Org/Semantic-UI@597843ab84 (2026-08-13). Data as JSON: /api/errors/fae0fd0abe11bf3a. Report an issue: GitHub.