A trick to test selenium with ExtJS is to use cssSelectors. As an element can have more than one css classes and you really dont need to define any style for that css class it can be a good locator for the element and faster than XPATH on IE. You can define cssSelector as tbar: { xtype: 'toolbar', items: [ { xtype: 'button', text: 'Send', cls: 'x-btn-text', overCls: 'x-btn-noicon', ctCls: 't-btn-yellow x-btn-over', iconCls: 't-send seleniumSendNote ', ........... ........... and you can then in your test call the button click as driver.findElement(By.cssSelector("button.seleniumSendNote")) .click();