如何在JavaScript中的同一元素上应用longclick事件和doubleclick事件

Question

I have an element(textArea). Now I would like a long press event and a double click event on the element. I am able to do this but I would also like to use event.preventDefault() in the mousedown event of long press event. This in turn prevents the dblClick event also.

The reason why I want to preventDefault is I am rendering an element on longPress and wanted to prevent the initial mouseDown as I am firing mousemove after longpress. I have searched and re-searched the net but am unable to find a good answer which solves the problem of long press and dblclick on the same element.

thanks!!

Answer 1

try this Demo

HTML

<input type="button" ondblclick="whateverFunc()" onmousedown="func(event)" onmouseup="revert()" value="hold for long"/>

JavaScript

var timer;
var istrue = false;
var delay = 3000; // how much long u have to hold click in MS
function func(e)
{
   istrue = true;
   timer = setTimeout(function(){ makeChange();},delay);
  // Incase if you want to prevent Default functionality on mouse down
  if (e.preventDefault) 
  { 
     e.preventDefault();
  } else {
     e.returnValue = false; 
  }
}

function makeChange()
{
      if(timer)
      clearTimeout(timer);

      if(istrue)
      {
            /// rest of your code
          alert('holding');

      }
}
function revert()
{
   istrue =false;
}
function whateverFunc()
{
    alert('dblclick');
}