How to open component dialog through Javascript in Touch UI AEM/Adobe CQ5

1) You need to get the editable of the component which you want to open dialog

var cmpEditables = Granite.author.store.find("<component content node path");

var cmp = cmpEditables[0];

2)Pass the editable to the execute method

Granite.author.EditorFrame.editableToolbar.config.actions.CONFIGURE.execute(cmp);