event-handler-manager/sample/index.js

A typescript (also javascript) simple Event Handler Manager

(function() {
  var myEventHandler = new EventHandlerManager.EventHandlerManager();
  myEventHandler.attach(['beforestart', 'afterstart']);
  var num = 1;
  myEventHandler.on('beforestart', (event, sender) => {
    return new Promise(function(resolve, reject) {
      setTimeout(() => {
        console.log(event + ' 1: executed ' + num++);
        resolve();
      }, 500);  
    });
    
  });

  myEventHandler.on('beforestart', (event, sender) => {
    console.log(event + ' 2: executed ' + num++);
  });

  myEventHandler.on('afterstart', (event, sender) => {
    console.log(event + ' 1: executed ' + num++);
  });

  function start() {
    myEventHandler.trigger('beforestart', true, 'reverse').then(() => {
      console.log('event beforestart has ended');
      //your custom code
      console.log('some work have been done...');

      myEventHandler.trigger('afterstart').then(() => {
        myEventHandler.off('beforestart');
        myEventHandler.off('afterstart');
        console.log('event start finished');
      });

    });  
  }

  start();

 

})();