Event handler functions are subject to the same Garbage Collection that other variables are. That means they will be removed from memory when the interpreter determines that there is no possible means to obtain a reference to the function. Simply deleting a node however does not guarantee garbage collection. For instance, take this node and … Read more
Navigation Timing is in most browsers now(ie9+) http://www.w3.org/TR/navigation-timing/#sec-navigation-info-interface if (!!window.performance && window.performance.navigation.type === 2) { // page has been hit using back or forward buttons } else { // regular page hit }
The concept of “bubbling up” is like if you have a child element with a click event and you don’t want it to trigger the click event of the parent. You could use event.stopPropagation(). event.stopPropagation() basically says only apply this click event to THIS CHILD NODE and don’t tell the parent containers anything because I … Read more
Use the event capture phase Put an element around the element you want to cancel the click event for, and add a capture event handler to it. var btnElm = document.querySelector(‘button’); btnElm.addEventListener(‘mouseup’, function(e){ console.log(‘mouseup’); window.addEventListener( ‘click’, captureClick, true // <– This registeres this listener for the capture // phase instead of the bubbling phase! ); … Read more
You are not using the correct code to get live functionality. $(‘#title-items’).on(‘click’, ‘a’, function(e) { alert(‘clicked’); e.preventDefault(); }); First, select your common ancestor element (#title-items in this example). You can use document here too if you want to handle all a elements. Pass the event type (on), then the sub selector (a), and then the … Read more
if you need a “afterShow”-event before jquery-ui version 1.9 you can overwrite the datepicker._updateDatepicker function. for example: $(function() { $.datepicker._updateDatepicker_original = $.datepicker._updateDatepicker; $.datepicker._updateDatepicker = function(inst) { $.datepicker._updateDatepicker_original(inst); var afterShow = this._get(inst, ‘afterShow’); if (afterShow) afterShow.apply((inst.input ? inst.input[0] : null)); // trigger custom callback } }); Now the datepicker raise an “afterShow” event after every update … Read more
You, my friend, are looking for jQuery “when”. http://api.jquery.com/jQuery.when/ To force anything to be synchronous, you can use something like this…. $.when($(this).trigger(‘custom-event’)).done(function(){ window.location.href=”https://stackoverflow.com/questions/13338484/url”; });
you can use DOMSubtreeModified to track changes on your span element i.e(if text of your span element changes dynamically ). $(‘.user-location’).on(‘DOMSubtreeModified’,function(){ alert(‘changed’) }) check out the followinf link https://jsbin.com/volilewiwi/edit?html,js,output
From the Docs at http://api.jquery.com/triggerHandler/ The .triggerHandler() method behaves similarly to .trigger(), with the following exceptions: The .triggerHandler() method does not cause the default behavior of an event to occur (such as a form submission). Not preventing the default browser actions allow you to specify an action that occurs on focus or select, etc etc … Read more
This is actually a somewhat indepth process. What I do is set global flags when users mouse enters and leaves the element that you want to scroll. Then, on the mousewheel event for the body I check to see if the MOUSE_OVER flag is true, then stop propagation of the event. This is so the … Read more