Speed Fix: How to Remove the 300ms Delay in jQuery Mobile Apps

Question

How do you remove the click/tap delay from mobile Safari on iOS?

I have fiddled around with event listeners quite a bit, and have used a bunch of different scripts (

Answer 1

I finally found the answer to my speed woes after tireless searching, and it comes in the form of FastClick (this thread goes into great detail, along with some tweaks in the comments from other users).

Incorporate the FastClick.js script, add the onLoad listener, and wrap your content in a span, and your app should start feeling much more native.

onLoad Listener:

Span Wrap:

    

    [...]

    

FastClick.js

//======================================================== FASTCLICK
         function FastButton(element, handler) {
            this.element = element;
            this.handler = handler;
            element.addEventListener('touchstart', this, false);
         };
         FastButton.prototype.handleEvent = function(event) {
            switch (event.type) {
               case 'touchstart': this.onTouchStart(event); break;
               case 'touchmove': this.onTouchMove(event); break;
               case 'touchend': this.onClick(event); break;
               case 'click': this.onClick(event); break;
            }
         };
         FastButton.prototype.onTouchStart = function(event) {

event.stopPropagation();
            this.element.addEventListener('touchend', this, false);
            document.body.addEventListener('touchmove', this, false);
            this.startX = event.touches[0].clientX;
            this.startY = event.touches[0].clientY;
 isMoving = false;
         };
         FastButton.prototype.onTouchMove = function(event) {
            if(Math.abs(event.touches[0].clientX - this.startX) > 10 || Math.abs(event.touches[0].clientY - this.startY) > 10) {
               this.reset();
            }
         };
         FastButton.prototype.onClick = function(event) {
            this.reset();
            this.handler(event);
            if(event.type == 'touchend') {
               preventGhostClick(this.startX, this.startY);
            }
         };
         FastButton.prototype.reset = function() {
            this.element.removeEventListener('touchend', this, false);
            document.body.removeEventListener('touchmove', this, false);
         };
         function preventGhostClick(x, y) {
            coordinates.push(x, y);
            window.setTimeout(gpop, 2500);
         };
         function gpop() {
            coordinates.splice(0, 2);
         };
         function gonClick(event) {
            for(var i = 0; i < coordinates.length; i += 2) {
               var x = coordinates[i];
               var y = coordinates[i + 1];
               if(Math.abs(event.clientX - x) < 25 && Math.abs(event.clientY - y) < 25) {
                  event.stopPropagation();
                  event.preventDefault();
               }
            }
         };
         document.addEventListener('click', gonClick, true);
         var coordinates = [];
         function initFastButtons() {
 new FastButton(document.getElementById("fastclick"), goSomewhere);
         };
         function goSomewhere() {
 var theTarget = document.elementFromPoint(this.startX, this.startY);
 if(theTarget.nodeType == 3) theTarget = theTarget.parentNode;

 var theEvent = document.createEvent('MouseEvents');
 theEvent.initEvent('click', true, true);
 theTarget.dispatchEvent(theEvent);
         };
//========================================================