preventDefault() on a timer - javascript

Does anyone know if there's a way to preventDefault(), but on a timer, so default actions are restored after a certain time?
Here's what I have so far:
function setResetInterval(bool){
var el = $('article');
if(bool){
timer = setInterval(function(){
setTimeout(function(){
console.log('default prevented');
e.preventDefault();
}, 500);
},1000);
}else{
clearInterval(timer);
}
}
if(object.touch.touch){
object.header.menu_button.attr('href',null);
object.touch.articles = $('article');
object.content_blocks.on('click','article',{},function(e){
object.touch.articles.removeClass('on');
$(this).addClass('on');
e.stopPropagation();
setResetInterval(true);
setTimeout(
function() { setResetInterval(false); }, 500);
});
}
Problem is, the function is called after the clickthrough and the action is not prevented. The alternative is the prevent the default action on click, which stop scrolling on mobile devices.
Thinking about it more clearly, the real problem is the click tag in question is basically the entire screen width on mobile.

To build on what Cayce said, one way to approach this is to tie the functionality to a class you later remove.
Demo Fiddle:
In the example, the default will be prevented as long as the div has the .red class, the setTimeout will remove the class after 3 seconds.
JS:
$('body').on('click', '.red', function (e) {
e.preventDefault();
console.log('I only show up while default is prevented');
});
$('body').on('click', 'div', function () {
console.log('I will always show up');
});
setTimeout(function () {
$('div').removeClass('red');
},3000);

Related

How do I get this slideshow to pause on mouse hover?

I'm practically useless at JavaScript so I need your help to add a "pause on mouse hover" feature to this slideshow.
$( function() {
$( '#cbp-fwslider' ).cbpFWSlider();
} );
setInterval(function() {
if(jQuery('.cbp-fwnext').css('display') != 'none'){
jQuery('.cbp-fwnext').click();
}
else {
jQuery('.cbp-fwdots span:first-child').click();
}
}, 3000);
I found this slideshow here and I added the bottom bit (copied it from another user) to allow it to auto scroll but I have no idea on how to make it pause on mouse hover.
Please help anyone.
If I understand your code correctly, you are using setInterval() to simulate a click on the next button every 3 seconds. So you can add a pause by having some code process the mouseenter and mouseleave events and set a isPaused variable that your existing code would then test before doing the click(). Assuming you want the hover functionality to be over the #cbp-fwslider element:
$( function() {
var isPaused = false;
$( '#cbp-fwslider' ).cbpFWSlider()
.on({
mouseenter: function() { isPaused = true; },
mouseleave: function() { isPaused = false; }
});
setInterval(function() {
if (isPaused) return; // do nothing when paused
if(jQuery('.cbp-fwnext').css('display') != 'none')
jQuery('.cbp-fwnext').click();
else
jQuery('.cbp-fwdots span:first-child').click();
}, 3000);
});
Note that I've moved your setInterval() code inside the document ready handler so that isPaused can be a local variable within the ready handler rather than a global.
(Simple demo of the pause-on-hover functionality without the slideshow: http://jsfiddle.net/1gf8z8yd/1/)

How to block/shut down click action for 1 second

I have some problem, i need to block/shut down some click action for some little time. What i'm trying to do is fire all actions after my click, but block this click when this actions is under procesing. So this is my code, thx for help:
carousel_controls_buttons.live('click', function(e){
carousel_controls_buttons.attr('disabled', 'disabled');
setTimeout(function(){
e.preventDefault();
$(xml).find("main_menu").each(function (){
// some actions
});
carousel_controls_buttons.removeAttr('disabled');
}, 450);
});
I am presuming you are wanting something like this:
$(document).ready(function () {
carousel_controls_buttons.attr('disabled', 'disabled');
setTimeout(function(){
carousel_controls_buttons.removeAttr('disabled');
}, 1000);
carousel_controls_buttons.live('click', function(e){
e.preventDefault();
$(xml).find("main_menu").each(function (){
// some actions
});
});
});

How to add a wait time before hover function is executed

I am working on a nested menu, and when my mouse move over a option, a sublist will show up.
Here is my hover function:
$( ".sublist" ).parent().hover( function () {
$(this).toggleClass("li_hover",300); //use to change the background color
$(this).find(".sublist").toggle("slide", {}, 500); //sub list show / hide
});
Now, I want add a short period before the sublist shows up to prevent the crazy mouse moving from user. Does somebody have a good suggestion on this?
Update:
Thanks for you guys, I did a little bit change on my program, recently it looks like this:
function doSomething_hover (ele) {
ele.toggleClass("li_hover",300);
ele.find(".sublist").toggle("slide", {}, 500);
}
$(function () {
$( ".sublist" ).parent().hover( function () {
setTimeout(doSomething_hover($(this)), 3000);
});
}):
This is weird that setTimeout will not delay anything. but if I change the function call to doSomething_hover (without "()"), the function will delay good. but i can not pass any jquery element to the function, so it still not works, could somebody tell me that how to make doSomething_hover($(this)) work in setTimeout ?
Update 2:
Got the setTimeout work, but it seems not what I want:
What I exactly want is nothing will happen, if the mouse hover on a option less than 0.5sec.
Anyway, here is the code I make setTimeout work:
function doSomething_hover (ele) {
ele.toggleClass("li_hover",300);
ele.find(".sublist").toggle("slide", {}, 500);
}
$(function () {
$( ".sublist" ).parent().hover( function () {
var e = $(this);
setTimeout(function () { doSomething_hover(e); }, 1000);
});
}):
Final Update:
I got this work by using clearTimeout when I move the mouse out.
so the code should be:
$( ".sublist" ).parent().mouseover( function () {
var e = $(this);
this.timer = setTimeout(function () { doSomething_hover(e); }, 500);
});
$( ".sublist" ).parent().mouseout ( function () {
if(this.timer){
clearTimeout(this.timer);
}
if($(this).hasClass("li_hover")){
$(this).toggleClass("li_hover");
}
$(this).find(".sublist").hide("slide", {}, 500);
});
This is the part in the $(document).ready(). Other code will be same as above.
真. Final Update:
So, mouseover and mouseout will lead to a bug sometime, since when I move the mouse to the sublist, the parents' mouseover event will be fire, and hide the sublist.
Problem could be solved by using hover function:
$( ".sublist" ).parent().hover(
function () {
var e = $(this);
this.timer = setTimeout(function () { doSomething_hover(e); }, 500);
},
function () {
if(this.timer){
clearTimeout(this.timer);
}
$(this).find(".sublist").hide("slide", {}, 500);
if($(this).hasClass("li_hover")){
$(this).toggleClass("li_hover",300);
}
}
);
Thanks all
Try this please:
Code
setInterval(doSomthing_hover, 1000);
function doSomthing_hover() {
$(".sublist").parent().hover(function() {
$(this).toggleClass("li_hover", 300); //use to change the background color
$(this).find(".sublist").toggle("slide", {}, 500); //sub list show / hide
});
}​
SetTime vs setInterval
At a fundamental level it's important to understand how JavaScript timers work. Often times they behave unintuitively because of the single thread which they are in. Let's start by examining the three functions to which we have access that can construct and manipulate timers.
var id = setTimeout(fn, delay); - Initiates a single timer which will call the specified function after the delay. The function returns a unique ID with which the timer can be canceled at a later time.
var id = setInterval(fn, delay); - Similar to setTimeout but continually calls the function (with a delay every time) until it is canceled.
clearInterval(id);, clearTimeout(id); - Accepts a timer ID (returned by either of the aforementioned functions) and stops the timer callback from occurring.
In order to understand how the timers work internally there's one important concept that needs to be explored: timer delay is not guaranteed. Since all JavaScript in a browser executes on a single thread asynchronous events (such as mouse clicks and timers) are only run when there's been an opening in the execution.
Further read this: http://ejohn.org/blog/how-javascript-timers-work/
timeout = setTimeout('timeout_trigger()', 3000);
clearTimeout(timeout);
jQuery(document).ready(function () {
//hide a div after 3 seconds
setTimeout( "jQuery('#div').hide();",3000 );
});
refer link
function hover () {
$( ".sublist" ).parent().hover( function () {
$(this).toggleClass("li_hover",300); //use to change the background color
$(this).find(".sublist").toggle("slide", {}, 500); //sub list show / hide
});
}
setTimeout( hover,3000 );
....
You could use .setTimeout
$(".sublist").parent().hover(function() {
setTimeout(function() {
$(this).toggleClass("li_hover", 300); //use to change the background color
$(this).find(".sublist").toggle("slide", {}, 500); //sub list show / hide
}, 1000);
});​

Delay a link click

Here's the fiddle I'm working with: http://jsfiddle.net/Scd9b/
How can I delay the href function after the click?
For example a user clicks on the link, the message slides down One moment... and after 2 seconds the user continues to the page its linked to.
Sorry everybody forgot to mention there are some anchors that are not linked.
You can simulate navigating to a page by settings window.location. So we will block the normal function of the link with preventDefault and then in a setTimeout, we will set the correct window.location:
https://codepen.io/anon/pen/PePLbv
$("a.question[href]").click(function(e){
e.preventDefault();
if (this.href) {
var target = this.href;
setTimeout(function(){
window.location = target;
}, 2000);
}
});
Check this fiddle: http://jsfiddle.net/C87wM/1/
Modify your toggle like this:
$("a.question[href]").click(function(){
var self = $(this);
self.toggleClass("active").next().slideToggle(2000, function() {
window.location.href = self.attr('href'); // go to href after the slide animation completes
});
return false; // And also make sure you return false from your click handler.
});
Cancel the click and use setTimeout to change the location.
$(document).ready(function(){
$("span.answer").hide();
$("a.question").click(function(e){
$(this).toggleClass("active").next().slideToggle("slow");
e.preventDefault();
var loc = this.href;
if(loc){
window.setTimeout( function(){ window.location.href=loc; }, 2000 );
}
});
});
$(document).ready(function(){
$("span.answer").hide();
$("a.question").click(function(e){
e.preventDefault();
$(this).toggleClass("active").next().slideToggle("slow");
var Link = $(this).attr("href");
setTimeout(function()
{
window.location.href = Link;
},2000);
});
});
Prevent the default action of the link, first of all. Then add a timeout of 2 seconds, after which the page is redirected to the url found in the href attribute of the link.
$("a.question").click(function(e){
e.preventDefault();
$(this).toggleClass("active").next().slideToggle("slow");
setTimeout(function(){
location.href = $(this).prop("href");
}, 2000);
});
Example.
How about e.preventDefault in your click handler. Then do a setTimeout that takes you to your destination?
$("a.question").click(function(e){
e.preventDefault();
$(this).toggleClass("active").next().slideToggle("slow");
setTimeout('window.location.href=' + $(this).attr(href), 2000);
});
This should do it:
$("a[href]").click(function () {
var url = this.href;
setTimeout(function () {
location.href = url;
}, 2000);
return false;
});
Setting window location didn't sound like a good idea to me, So here's what I did
On click it checks whether the user clicked the link if yes it waits 2 seconds then triggers the click again and since it's not user-triggered it doesn't wait this time
document.getElementById("question").addEventListener("click", function(e) {
//if user clicked prevent default and trigger after 2 seconds
if(e.isTrusted) {
e.preventDefault();
//after 2 seconds click it and it'll not wait since it's not user triggered
setTimeout(function() {
e.target.click();
}, 2000);
}
});
Bing

Issues with clearTimeout

I am trying to build a simple navigation with sub-navigation drop-downs. The desired functionality is for the drop-down to hide itself after a certain amount of seconds if it has not been entered by the mouse. Though if it is currently hovered, I would like to clearTimeout so that it does not hide while the mouse is inside of it.
function hideNav() {
$('.subnav').hover(function(){
clearTimeout(t);
}, function() {
$(this).hide();
});
}
$('#nav li').mouseover(function() {
t = setTimeout(function() { $('.active').hide()}, 4000);
//var liTarget = $(this).attr('id');
$('.active').hide();
$('.subnav', this).show().addClass('active');
navTimer;
hideNav();
});
What am I missing? Am I passing the handle wrong?
You should also clear the timeout in mouseover, before setting the new timeout.
Otherwise a timeout started before will still be active, but no longer accessible via the t-variable.
you can make the timer variable global.
function hideNav() {
$('.subnav').hover(function(){
clearTimeout(window.t);
}
}
$('#nav li').mouseover(function() {
window.t = setTimeout(function() { $('.active').hide()}, 4000);
});
Try doing it the recommended way (JS statement as a string):
t = setTimeout("$('.active').hide()", 4000);

Categories