Simulate a click on a DOM element in Javascript

simulateClick.js

function fireEventClick(elem){
    if(document.createEvent){                                                  
      var e = document.createEvent('MouseEvents');
      e.initMouseEvent('click', /* Event type */
      true, /* Can bubble */
      true, /* Cancelable */
      document.defaultView, /* View */
      1, /* Mouse clicks */
      0, /* Screen x */
      0, /* Screen y */
      0, /* Client x */
      0, /* Client y */
      false, /* Ctrl */
      false, /* Alt */
      false, /* Shift */
      false, /* Meta */
      0, /* Button */
      null); /* Related target */
      elem.dispatchEvent(e);                      
    } else { // pour IE
      elem.click();
    }
}

// Ref: https://blog.kodono.info/wordpress/2009/09/04/simuler-un-click-sur-un-bouton-ou-un-lien-programmation/