Long Press in JavaScript?

Question

Is it possible to implement "long press" in JavaScript (or jQuery)? How?

alt text http://androinica.com/wp-content/uploads/2009/11/longpress_options.png

HTML

<a href="" title="">Long press</a>

JavaScript

$("a").mouseup(function(){
  // Clear timeout
  return false;
}).mousedown(function(){
  // Set timeout
  return false; 
});

Answer 1

There is no 'jQuery' magic, just JavaScript timers.

var pressTimer;

$("a").mouseup(function(){
  clearTimeout(pressTimer);
  // Clear timeout
  return false;
}).mousedown(function(){
  // Set timeout
  pressTimer = window.setTimeout(function() { ... Your Code ...},1000);
  return false; 
});

Answer 2

You could set the timeout for that element on mouse down and clear it on mouse up:

$("a").mousedown(function() {
    // set timeout for this element
    var timeout = window.setTimeout(function() { /* … */ }, 1234);
    $(this).mouseup(function() {
        // clear timeout for this element
        window.clearTimeout(timeout);
        // reset mouse up event handler
        $(this).unbind("mouseup");
        return false;
    });
    return false;
});

With this each element gets its own timeout.

Answer 3

For me it's work with that code (with jQuery):

var int       = null,
    fired     = false;

var longclickFilm = function($t) {
        $body.css('background', 'red');
    },
    clickFilm = function($t) {
        $t  = $t.clone(false, false);
        var $to = $('footer > div:first');
        $to.find('.empty').remove();
        $t.appendTo($to);
    },
    touchStartFilm = function(event) {
        event.preventDefault();
        fired     = false;
        int       = setTimeout(function($t) {
            longclickFilm($t);
            fired = true;
        }, 2000, $(this)); // 2 sec for long click ?
        return false;
    },
    touchEndFilm = function(event) {
        event.preventDefault();
        clearTimeout(int);
        if (fired) return false;
        else  clickFilm($(this));
        return false;
    };

$('ul#thelist .thumbBox')
    .live('mousedown touchstart', touchStartFilm)
    .live('mouseup touchend touchcancel', touchEndFilm);

Answer 4

While it does look simple enough to implement on your own with a timeout and a couple of mouse event handlers, it gets a bit more complicated when you consider cases like click-drag-release, supporting both press and long-press on the same element, and working with touch devices like the iPad. I ended up using the longclick jQuery plugin (Github), which takes care of that stuff for me. If you only need to support touchscreen devices like mobile phones, you might also try the jQuery Mobile taphold event.

Answer 5

You can use jquery-mobile's taphold. Include the jquery-mobile.js and the following code will work fine

$(document).on("pagecreate","#pagename",function(){
  $("p").on("taphold",function(){
   $(this).hide(); //your code
  });    
});

Answer 6

You can use taphold event of jQuery mobile API.

jQuery("a").on("taphold", function( event ) { ... } )