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How to add Media Query in jQuery

This is the jQuery code that I am using in my WordPress website, and it's working fine.
jQuery(document).ready(function($){
$(document).on("click",".selected",function() {
$('.wvg-single-gallery-image-container').css('display','none');
})
});
I just want the code to stop working at the screen width of 766, on 766 the code does not have to work.
Let me know if there is something that can make this possible.
Thanks,
Abdullah

Consider the following.
jQuery(document).ready(function($){
$(document).on("click", ".selected", function() {
if($(window).width() < 766){
$('.wvg-single-gallery-image-container').hide();
}
});
});
If the document is not very wide, less than 766, the button will perform the action. Otherwise, nothing will happen.
See More: https://api.jquery.com/width/

You can use mediaMatch to test against a media query…
if (window.matchMedia('(max-width: 766px)')) {
$('.wvg-single-gallery-image-container').css('display','none');
}
…but that approach isn't a great one. Consider what would happen if the user resized the window after the JS had run. The inline style you are adding would still be there, but based on the wrong window size.
Instead, use JS to add and remove classes from elements. Then use those classes in your CSS with media queries.
$('.wvg-single-gallery-image-container').addClass('a-suitably-semantic-class-name);

Flip effect condition

So I’m trying to figure out how to make a click effect work on mobile. I want the hover effect on desktop/laptop and the click effect on mobile.
Currently the hover effect is implemented. As you can see on my website's homepage: http://otownsend.ca/
What I need to figure out is how to implement the click effect at a certain screen size (e.g. 800px). So instead of the card flipping as soon as the curser hovers over ".flipper", the click effect would require the user to click ".flipper" in order for the card to flip. This would require me to place in a conditional statement - however, it isn’t working. I’m not so familiar with JQuery so it has been quite the challenge. This is what I currently have:
if (window.matchMedia('(max-width: 800px)').matches)
{
$('.flipper').click(function (e) {
$(this).toggleClass('flipped');
});
}
".flipper" is the parent element to the front and back. All the css and html is the same. I just need to integrate this JQuery stuff and then I’m set.
Any suggestions would be appreciated :)

You can use removeClass() and addClass(). I've also changed your click event with .on('click'). I recommend you to use it that way. Also, add the code in $(document).ready(). I hope this is what you need. If not, please let me know and I will try a different approach:
$(document).ready(function() {
$('.flipper').on('click', function(e) {
$('.flipped').removeClass('flipped');
$(this).addClass('flipped');
});
});
Regarding matchMedia you can see by running the test snippet that it works:
if (window.matchMedia('(max-width: 800px)').matches) {
$('.flipper').css('color', '#f00');
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<p class='flipper'>
testing matchMedia
</p>
Also, I've seen that in your code, you are doing something wrong. You are adding a <script> tag which contains jQuery source, inside another <script> tag(or you forgot to close the </script> tag). This is wrong. Please correct this:
<script type="text/javascript">
$(function(){
$(".flipper").flip({
trigger: "hover"
});
});
<script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>
To this:
<script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>
<script type="text/javascript">
$(function() {
if (window.matchMedia('(min-width: 801px)').matches) {
$(".flipper").flip({
trigger: "hover"
});
}
});
</script>
Notice the media query added for desktop only, from 801px up.
As a suggestion, I would like to recommend you to use a library like Modernizr for the media query part. Using Modernizr's way of using media queries, you won't have to refresh the page to see the changes like when using matchMedia. This also helps when you switch from portrait to landscape on mobile devices. You can read the docs about Modernizr media queries here.

jQuery Loading Too Slowly with Image src attr() Usage

I'm building an eCommerce store and I've written a small piece of jQuery to change the SRC the logo for the home page only. The issue is that when I load the page I can see the incorrect logo load before the new SRC is applied. I have recorded the issue here:
https://app.hyfy.io/v/abmoLf1Q35/?p=1
jQuery:
<script>
jQuery(document).ready(function() {
if (top.location.pathname === '/') {
jQuery(".logo img").attr("src", "newsrc.png");
}
});
</script>
Would I be correct in saying that for the jQuery to work the logo needs to have loaded first, which is why this is an issue?
Either way, could anybody advise if it's possible to have the jQuery take priority or suggest a better way of achieving what I need to here?
I appreciate the time taken to respond, thank you very much.

Yes, jquery would need to target an existing element to affect it.
in other words, the logic goes:
1. load image asset
2. alter source via jquery
if you have access to the css, you can put a display none on the .logo then when jquery alters the source, add a display:block via .css
<style>
.logo img{
display:none;
}
</style>
<script>
jQuery(document).ready(function() {
if (top.location.pathname === '/') {
jQuery(".logo").css('display', 'block').find('img').attr("src", "newsrc.png");
}
});
</script>

Script works only on homepage

I have problem with adding class after scroll and it's really strange to me and here is why:
I used this script on multiple projects and never had this problem before. When I scroll down on home page, script works perefectly, class "Fix" is added to class "navigacija" and the social icons, menu and languages are fixed at top of the page. But on other pages this is not the case. Class "Fix" isn't added to class "navigacija" after scrolling 145px down. And what's more interesting, I insert very large image on purpose at this page and until page loads that image, my script works (try to scroll down before image is loaded). When page is fully loaded, script doesn't work anymore. I'm working in Joomla, I made my own template, I didn't install any modules, components or plugins. There are only Joomla's standard js files and my scripts that I used before with this script without any problem.
Here is the website I'm working on: http://investfarm.moderanweb.rs/
and here is the script:
$(function() {
var navigacija = $(".navigacija");
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= 145) {
navigacija.removeClass('navigacija').addClass("Fix");
} else {
navigacija.removeClass("Fix").addClass('navigacija');
}
});
});
Please help, thanks in advance.

Try to change $ to jQuery if you are using jQueryNoConflict, and why is it working on homepage, I guess because jQuery library is loaded twice, before and after mootools library, so try this instead, and you should do the same for ToolTip and other stuffs :
jQuery(function() {
var navigacija = $(".navigacija");
jQuery(window).scroll(function() {
var scroll = jQuery(window).scrollTop();
if (scroll >= 145) {
navigacija.removeClass('navigacija').addClass("Fix");
} else {
navigacija.removeClass("Fix").addClass('navigacija');
}
});
});

For starters, start cleaning up the errors that show in the console.
You have multiple script tags that points to an HTML page not to a script.
<script type="text/javascript" src="/templates/investfarmimpexmd/js/jquery-2.1.1.js"></script>
<script type="text/javascript" src="/templates/investfarmimpexmd/js/wow.min.js"></script>
<script src="/js/wow.min.js"></script>
I don't know what you expected those to be loading, but it is not loading a script and is causing errors.
Perhaps these be marked type="text/template" so the browser doesn't try to execute them and you can use them as templates?
And, you have an error on this line of inline Javascript that indicates that jQuery is not loaded properly so you will have to find out why that is:
jQuery(window).on('load', function() {
new JCaption('img.caption');
});
And, you are loading multiple different versions of jQuery in the same page, but not managing how those different versions are used. You can't just load a version of jQuery, issue a jQuery.noConflict() and then load another version of jQuery. The first will be doing nothing at that point so if you needed it for something, it will not be working.

How do i hide html until its processed with javascript?

I am using some JS code to transform my menu into a drilldown menu.
The problem is before it runs the JS you see a BIG UGLY mess of links. On their site its solved by putting the js at the top. Using recommendations by yahoo/YSlow i am keeping the JS files at the bottom.
I tried hiding the menu with display:none then using jquery to .show(), .css('display', ''), .css('display', 'block') and they all lead up to a messsed up looking menu (i get the title but not the title background color or any links of the menu)
How do i properly hide a div/menu and show it after being rendered?

In the <head> place this:
<script>document.documentElement.className = 'js';</script>
Now, it will .js class to your html element. And it will be the very first thing done by the javascript on the page.
In your CSS you can write:
.js #menu {
display:none;
}
And then:
$(document).ready(function() {
$('#menu').css('display','block').fancyMenu();
});
This is an excellent technique, that allows you to make your pages "progressively enhanced", if your user has JavaScript disabled – she will still be able to see the content, and you can also separate non-JS styling with styling, that is relevant only for JS version of your menu, perhaps "position:absolute" and things like that.

At the top of your page put:
<script type="text/javascript">
document.write('<style type="text/css">');
document.write('#mylinks { display:none; }');
document.write('</style>');
</script>
And at the end of your "processing", call $('#mylinks').show();
document.write is evaluated as the DOM is processed, which means this dynamic style block will be registered in the style rules before the page is first displayed in the viewport.
This is a good case where progressive enhancement works really well - if your users have JS available & enabled, you hide the links until they are ready; but if not, they are still available, albeit ugly.

Life will be gentler with you if you try not to make pages that look like "a big ugly mess" without javascript. Have a heart.
Whatever yahoo says, it would probably be worth it for you to insert a little script that adds a style element with a few rules to the head of ypur document, before the body renders.

I found the solution. I should let the links be hidden with css then .show() BEFORE the ddMenu code executes instead of after. The ddMenu seems to check the parents width and sinces its hidden i guess its 0. The time between .show() and ddMenu is fast enough not to show the ugly links (on my machine/browser). The the majority of the time (page loading, http req for the JS files, JS compiling/exec etc) the links are hidden so it looks pretty good.
$(function () {
$('.menuT1').show(); //do it before not after in this case.
$('.menuT1 > ul').ddMenu({

Well, If you are familiar with jquery then I would do something like this
$("#mybuttom").click(function() {
$("#mydiv").hide(); //hide the div at the start of process
$.post( "mypostpage.php",
{ testvar: testdata },
function(data) {
//callback function after successful post
$('#mydiv').show(); //show it again
}
);
});