on/off

Introduction

• on Register event listener
• off Unregister event listener

Arguments

• {string} key Event key
  • eventKeys.CHANGE Listen for Element changes
  • eventKeys.SCALE Listen for canvas scaling
  • eventKeys.SELECT Listen for Element selection
  • eventKeys.TEXT_CHANGE Listen for Text Element changes
• {function} callback Event callback function

Returns

No return value

Usage

import { iDraw, eventKeys } from 'idraw';

const app = document.querySelector('#app');

const idraw = new iDraw(app, {
  // ...
});

const onChange = (e) => {
  // ...
};

idraw.on(eventKeys.CHANGE, onChange); // Listen for Element change events

idraw.off(eventKeys.CHANGE, onChange); // Unregister Element change event listener