.delay() not working on my .show() JQuery - javascript

I'm trying to make my footer disappear when on a mobile device and only when the keyboard is open. Which I have working perfectly, however the issue is that the footer reappears before the keyboard has time to close. Which is because I'm using the event from the textbox having focus not the keyboard being open. So I thought the best way to resolve this is with a .delay() however, this isn't working at all. Anyone have any ideas here?
<script>
var isMobileView = false; //global variable
$(document).ready(function () {
function setScreenWidthFlag() {
var newWindowWidth = $(window).width();
if ( $(window).width() > 600) {
isMobileView = false;
}
else {
isMobileView = true;
}
}
$(".tbinputArea").focus(function() {
if(isMobileView)
$("#footer").hide();
});
$(".tbinputArea").focusout(function() {
if(isMobileView)
$("#footer").delay(500).show();
});
setScreenWidthFlag();
$(window).on("resize", function (e) {
setScreenWidthFlag();
});
});
</script>

$("#footer").delay(500).show(0);
Try this.

refer this explanation precisely explained the reasons for it http://www.mattlunn.me.uk/blog/2012/06/jquery-delay-not-working-for-you/
Delay is just for queue delay not any event delay so try to add some events within like fadeIn or similar.

Related

jQuery Scroll function for a web page is not working out?

I am trying to set scroll for a web page but it's not working out properly.
What I want is that when someone scroll to the middle of the or at least a little up before the footer element so I want to trigger scroll event and then wait for like 10 to 15 seconds as on triggering the scroll event the data is loaded through ajax which takes time and then each time to do so when someone goes down again to the footer so again the scroll function should get triggered.
What I am working now with is as follows but I want to enhance it to the above requirements :
$(document).on('scroll', function() {
if($(this).scrollTop()>=$('footer').position().top){
$('div#load_more').click();
}
});
Use $(window) instead of $(document)
// helper function does exactly what it says
function sleep (time) {
return new Promise((resolve) => setTimeout(resolve, time));
}
var $canfetch = true;
$(window).on('scroll', function(e) {
var scrollHeight = $(window).scrollTop();
var scrollPosition = $(".highlight")[0].offsetTop;
// if user has reached bottom of page the sleep function for next scroll event will be fired.
if (scrollPosition-scrollHeight <= 0) {
if($canfetch) {
console.log("ajax call here");
}
$canfetch = false;
// sleep function usage
sleep(15000).then(() => {
alert("15 seconds have passed");
// return to top of page
$(window).scrollTop(0);
$canfetch = true;
});
}
});
.ok {
height:500px;
}
.highlight{
height:20px;
text-align:center;
background-color:yellow;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="ok"></div>
<div class="highlight">Reference Point</div>
<div class="ok"></div>
I just did a jsfiddle test of your code and had following observations:
a. Assuming the footer is in a div
if you are using class='footer' then you have to use
$('.footer').position().top
If you are using id='footer' then you have to use $('#footer').position().top
b. I added console.log($(this).scrollTop() + '~~footer positon top is '+ $('.footer').position().top); and found that the condition is never met.
1671~~footer positon top is 1868 when I scrolled all the way down.
Hope this helps a bit.
Side Note: You might want to consider a cool plugin called ajax load more to achieve similar feature.
Use the below function use $(window) instead of $(document):
$(window).on('scroll', function(e) {
alert("Scrolled");
});

How to prevent div from triggering its parent's mousemove when it's hidden

I have some media. Above that, I have a group of controls that I want to hide when the user's mouse is idle. Then I want them to reappear if the user moves the mouse.
My problem is that when the controls go away, they trigger a mousemove event on the parent. This causes the controls to reappear.
Here is the JS code:
(function($) {
var timer = null;
$('.outer').mousemove(function() {
$('.inner').fadeIn('slow');
if (timer) {
window.clearInterval(timer);
}
timer = window.setTimeout(function() {
$('.inner').fadeOut('slow');
}, 3000);
});
})(jQuery);
And here is a fiddle: https://jsfiddle.net/8oduhs96/
Right now the fiddle is structured to look more like my project. I don't have a lot of flexibility for changing markup so a JS and/or CSS solution is preferred.
You can uncomment the lower block of CSS to see that the problem only happens when your mouse is over the blue area.
Use CSS and opacity/visibility to hide your elements, they will not trigger a modification of DOM (as a display:none/block; effect from jQuery fadeIn/fadeOut)
https://jsfiddle.net/8oduhs96/8/
You could add a check to see if the element is visible.
(function($) {
var timer = null;
$('.outer').mousemove(function() {
console.log('MouseOver');
if($('.inner').is(':visible')){
console.log('Triggered');
$('.inner').fadeIn('slow');
if (timer) {
window.clearInterval(timer);
}
timer = window.setTimeout(function() {
$('.inner').fadeOut('slow');
}, 3000);
}
});
})(jQuery);
As Michael suggests in a comment on his answer, I solved this from a UX standpoint by using a timeout.
I would still prefer a solution that doesn't involve a timeout if someone else out there knows how.
(function($) {
var timer = null;
function setupOuter() {
$('.outer').mousemove(function() {
$('.inner').fadeIn('slow');
$('.outer').off('mousemove');
});
}
setupOuter();
$('.inner').mousemove(function() {
if (timer) {
window.clearInterval(timer);
}
timer = window.setTimeout(function() {
$('.inner').fadeOut('slow', function() {
window.setTimeout(setupOuter, 500);
});
}, 3000);
});
})(jQuery);

jQuery AUTOMATIC scroll (no button click) on document ready

I am creating a chat, everything works perfectly, it scrolls down when i click the "Send" button, but I want it to scroll all the way down when the document is ready. I have done this by adding the scrolling function to setInterval, but the problem with that is that the user basically cant scroll up to see previous chat messages because he gets scrolled down every 0.1 seconds. My code is:
$(function () {
//$("#messages").scrollTop($("#messages").prop("scrollHeight")); Doesnt work at all
function updateChat(){
$("#messages").load('chat/ajaxLoad.php');
//$("#messages").scrollTop($("#messages").prop("scrollHeight")); This works but the user cannot scroll up anymore
}
setInterval(function () {
updateChat();
}, 100);
$("#post").submit(function(){
$.post("chat/ajaxPost.php", $('#post').serialize(), function (data) {
$("#messages").append('<div>'+data+'</div>');
$("#messages").scrollTop($("#messages").prop("scrollHeight")); // This works but only when the user presses the send button
$("#text").val("");
});
return false;
});
});
Add this to your code.
var chat = $("#messages").html();
setInterval(function () {
updateChat();
if(chat !== $("#messages").html()){
$("#messages").scrollTop($("#messages").prop("scrollHeight"));
chat = $("#messages").html();
}
}, 2000);
I think this should work (didnt test), but there are some better ways you can optimise this like not saving the whole .html() into a variable.
The idea here is that it checks if the content is changed every 2 seconds. If it is, it scrolls down.
I see what's your problem and I have 2 ideas for you :
You scroll down only when a new message is post, for example with an Ajax request you could check if number of messages is > in compare with the last 0.1s, if yes you scroll if not you ignore.
You scroll down every 1-2s only if the scroll is at the maximum bottom position. If the scroll is not at the maximum you do not scroll. I feel this solution is better.
You need to seperate the actions on your application,
also you missed many checks that can make the application work properly and will
make it easy to maintain.
How i suggestion the code will look:
$(function () {
function updateMessages(){
var messages_before_update = $("#messages").html();
$("#messages").load('chat/ajaxLoad.php');
var message_after_update = $("#messages").html();
if(messages_before_update !== message_after_update){
scrollToBottom();
}
}
function scrollToBottom(){
var scroll_height = $("#messages").prop("scrollHeight");
var scroll_top = $("#messages").scrollTop();
if(scroll_height !== scroll_top){
$("#messages").scrollTop($("#messages").prop("scrollHeight"));
}
}
function addMessage(message){
$("#messages").append('<div>' + message + '</div>');
}
setInterval(updateMessages, 100);
$("#post").submit(function () {
$.post("chat/ajaxPost.php", $('#post').serialize(), function (data) {
addMessage(data);
scrollToBottom();
$("#text").val("");
});
return false;
});
});

Switch click and hover events based on width

I want to toggle events based on width. for mobile only click event should work. for desktop hover event should work. while page loading my code working properly when resize my code is not working.
please help me why my code is not working. Thanks in advance
$(document).ready(function(){
function forDesktop(){
$(".popover-controls div").off('click');
$(".popover-controls div").on('hover');
$(".popover-controls div ").hover(function(e){
//popup show code
});
}
function forMobile(){
console.log("mobile");
$(".popover-controls div").off('hover');
$(".popover-controls div").on('click');
$(".popover-controls div").click(function(e){
//popop show
});
}
function process(){
$(window).width() > 600?forDesktop():forMobile();
}
$(window).resize(function(){
process()
});
process();
});
Its very simple, 1st you cant write this much of code for every event. We have to come up with very simple solution, here is how it works
1st check the width of the Page in JS and assign Desktop/Mobile Class on body :
function process(){
if( $(window).width() > 600){
$("body").removeClass("mobile").addClass("desktop");
}else{
$("body").removeClass("desktop").addClass("mobile");
}
}
$(window).resize(function(){
process()
});
Now, you have execute the command for hover and click:
$(document).on('mouseover', 'body.mobile .popover-controls div',function(e){
alert("hover");
});
$(document).on('click', 'body.desktop .popover-controls div',function(e){
alert("click");
console.log("click");
});
I Hope this will work for you. :)
Check the Js fiddle Example: http://jsfiddle.net/asadalikanwal/xcj8p590/
I have just created for you, also i have modified my code
You could use a JavaScript Media Query to determine the width of the screen as detailed here.
var mq = window.matchMedia( "(min-width: 500px)" );
The matches property returns true or false depending on the query result, e.g.
if (mq.matches) {
// window width is at least 500px
} else {
// window width is less than 500px
}
First Detect the Mobiles/Tablets Touch Event:
function is_touch_device() {
return 'ontouchstart' in window // works on most browsers
|| 'onmsgesturechange' in window; // works on ie10
};
Then Try like this:
function eventFire() {
var _element = $(".popover-controls div");
// True in Touch Enabled Devices
if( is_touch_device() ) {
_element.click(function(e) { .... });
}
else {
// apply Hover Event
_element.hover();
}
}
No need to detect width of devices ;)
There is one more solution with third party and Most popular library is Modernizr
This worked for me. It's a combination of the matchMedia() functionality #Ḟḹáḿíṅḡ Ⱬỏḿƀíé shared as well setTimeout() functionality #Jeff Lemay shared at TeamTreeHouse.com
The primary thing I contributed to was the use of the .unbind() functionality. It took me quite a while to figure out that this was necessary so the .hover() and .click() functions don't cross wires.
//Add/remove classes, in nav to show/hide elements
function navClassHandler(){
if($(this).hasClass('active')){
$('.dropdown').removeClass('active');
}else{
$('.dropdown').removeClass('active');
$(this).addClass('active');
}
}
function handleNav() {
//instantanteous check to see if the document matches the media query.
const mqM = window.matchMedia('(max-width: 1025px)');
const mqD = window.matchMedia('(min-width: 1025px)');
$('.dropdown').unbind(); //necessary to remove previous hover/click event handler
if (mqM.matches) {
console.log("Handling mobile");
$('.dropdown').click(navClassHandler);
} else {
console.log("Handling desktop");
$('.dropdown').hover(navClassHandler);
}
}
// we set an empty variable here that will be used to clearTimeout
let id;
/* this tells the page to wait half a second before making any changes,
we call our handleNav function here but our actual actions/adjustments are in handleNav */
$(window).resize(function() {
clearTimeout(id);
id = setTimeout(handleNav, 500);
});
//As soon as the document loads, run handleNav to set nav behavior
$(document).ready(handleNav);

Two javascript functions won't work at the same time

I have one script that shows a tooltip on click and the other script shows a menu after a certain point in the page.
If the menu doesn't load, then I can click on the buttons to show the tooltips just fine. But when the menu does show up, the tooltips script doesn't show anymore.
<script>
$(document).ready(function() {
$('#left-tooltip').click(function() {
$('#lollefttooltip').toggle();
});
});
$(document).ready(function() {
$('#right-tooltip').click(function() {
$('.right-tooltip').toggle();
});
});
</script>
<script>
$(function() {
$(window).scroll(function() {
if ($(this).scrollTop() > 650) {
$("#nav-block:hidden").css('visibility', 'visible');
$("#nav-block:hidden").fadeIn('650');
$("#nav-wrap:hidden").css('visibility', 'visible');
$("#nav-wrap:hidden").fadeIn('650');
$("#header-wrap:hidden").css('visibility', 'visible');
$("#header-wrap:hidden").fadeIn('650');
} else {
$("#nav-block:visible").fadeOut("650");
$("#nav-wrap:visible").fadeOut("650");
$("#header-wrap:visible").fadeOut("650");
}
});
});
</script>
Thanks in advance for the help!
update: Here is all the code I have for this. http://jsfiddle.net/parachutepenny/82J6G/11/
I'm sorry in advance for any beginner errors that I may have all over the place. I'm still learning how to code.
This doesn't answer your question, but there are some great opportunities to optimize here. Aside from best practice, they may also sort out the bugginess. Something like:
$(document).ready(function() { // combine doc.ready
var win = window, // store window as a variable
$bod = $('body');
$('#left-tooltip').click(function() {
$('#lollefttooltip').toggle();
});
$('#right-tooltip').click(function() {
$('.right-tooltip').toggle();
});
$(win).scroll(function() {
if (win.scrollY > 650) { // use scrollY from window variable so you're not retrieving from the DOM
$bod.addClass('navVisible'); // use classes on body to trigger CSS transitions on the children
} else {
$bod.removeClass('navHidden');
}
});
});
Put your multiple click function into single ready function.It may cause readability problem.
Follow this link.
Multiple document.ready() function

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