Develop Reference

Showing a div when an image in a slider is active

I am working with a plugin image slider and am attempting to show specific text that will be associated with image. For instance, image 1 will show paragraph 1, image 2 will show paragraph 2, etc.
I was going to upload a snippet showing what I am doing, but the plugin code was too much. Therefore, here is a jsfiddle link that shows what I am doing. The main code in question is at the bottom of the javascript and the text that I want to show is at the bottom of the html. This code:
$(document).ready(function() {
$('.ma5slider').ma5slider();
var court = $('#slide-1');
var activeSlide = $('.slide--active') == true;
if(court == activeSlide) {
court.show();
console.log('It is working');
}
});
I have the text set at display: none; on page load and then when the specific image is displaying (I believe I narrowed this down to the class .slide--active), that text set to show().
Does anyone see what I am doing wrong?

This is because you are not targeting the right active class when each slide takes turn to slide in, I have amended your code below:
$(document).ready(function() {
$('.ma5slider').ma5slider();
var court = $('.slide');
var activeSlideClassName = 'slide--active';
setInterval(function(){
if(court.hasClass(activeSlideClassName)){
console.log('It is working');
}
}, 1000);
});
Also your slide will need to have a callback function to capture the event whenever the new slide comes in. In this case I have used setInterval() to monitor the DOM, it isn't the best solution but you get the idea....
Working code here

you can check it $('.ma5slider').on('ma5.activeSlide') same as below :
jsfiddle

jQuery Hide/Show DIV on change of anchor text

I have one page website which changes URL #id or anchor text on scrolling and on navigation click. I have an image positioned fixed at the center of the site. The site is divided in different sections and the image shows in all the sections. I do not want to show the image on the first section as it is unrelated to the content of the 1st section but will be showed in all next sections. How can I make it work?
What I have tried till now but not working:
$(document).ready(function(){
$(".phone").hide();
var idSample = window.location.href.split("#");
var id = "#"+idSample[1];
if($(id) == "second"){
$(".phone").show();
}else{
$(".phone").hide();
}
});
Rest in Fiddle: https://jsfiddle.net/shubhamjha1000/vh7bu32q/
I don't want that phone to be seen on 1st section but on rest of the sections. Please help me guys!

You can use the answer written in this question to listen to changes in the window see what url you are on and show or hide the phone accordingly....
Example:
$(function(){
// Bind the event.
$(window).hashchange(hashchanged);
// Trigger the event (useful on page load).
hashchanged();
});
function hashchanged(){
var hash = location.hash.replace( /^#/, '' );
//your code
if(hash == "#first") {
// Hide element
} else {
// Show element
}
}
But still even though what you are planning to do will work with that solution I think it would still look bad on the app it self and instead of a hovering phone maybe you can create the phone as an img inside the relevant containers and hide and show with id...

You can simply use a substring on your location.hash for get your hash tag
$(document).ready(function(){
$(".phone").hide();
var id = window.location.hash.substr(1);
if($(id) == "second"){
$(".phone").show();
}else{
$(".phone").hide();
}
});

How to do something when scroll to content or content appear on window?

I have a lot of pictures on my page. and I want to do some javascript and PHP processing when the user scrolls down to each image. I have come up with the follwing:
$(window).scroll(function(){
hT = $('.Picture-1A:eq(3)').offset().top,
hH = $('.Picture-1A:eq(3)').outerHeight(),
wH = $(window).height(),
wS = $(this).scrollTop();
if ((wS >= (hT+hH-wH))){
alert('you have scrolled to the h1!');
}
});
The above example only works if I reach to a certain image. And I want to do something when the scroll reach an image. I want to get it's ID and process that in PHP using AJAX.
Let's assume that the following are the images:
<div class="Picture-1A"></div>
<div class="Picture-1A"></div>
<div class="Picture-1A"></div>
What I want to do is add 1 impression to the image that has appeared on the window. and I want to do that using AJAX every time the user scrolls down the page.
That's it
Update:
I have found a great library thanks to Eugenio Enko. and here is how it's done:
Include the library code in your project after jQuery:
If you want it to trigger for each image, then use each like so:
$('.Picture-1A').each(function() {
$(this).waypoint(function(direction){
alert($(this).html());
});
});
But I am having trouble getting the html of $(".Picture-1A").html() using this it returns undefiend

Here you can view an example using the old waypoint:
http://codepen.io/eugenioenko/pen/qZMqOW
$(document).ready(function(){
$('.spfx-scroll-p').waypoint(function(){
alert('scrolled');
},{offset:'90%'});
});

There are two libraries I know that could help you with that:
http://imakewebthings.com/waypoints/
http://scrollmagic.io/
The second one is more complete and has much more option, but for what you need, it seems that waypoint should work well enough.
best regards.

how to execute jquery function after one another (and few more questions)

To explain the situation ,I am using both jquery and animate.css combined in order to bring about some animation part that i want to apply to my website.
http://lifeto.cafe24.com/xe/
I have a couple of questions in this post, and it needs fairly thorough understanding of the site that i have built.
Fist, If you go to the webstie I linked above and click on the menu that says '공지사항' on the bottom, an iframe src gets triggered by jquery attr.
And if you click on any of the image you can see on the board after that, the board content (#window_frame) slidesout to left and the new div (.window_board) slides in from the leftside.
but when you click on the image, notice the content of the board AND the .window_board disappear and appear AT THE SAME TIME.
what i want to achieve here is to have the #window_frame slides out first, and THEN, after it is done, have .window_board slides in.
and SECONDLY, when i click on the menu button that says '공지사항' from the point when the .window_board is still opened, i want the .window_board to slides back in, and have the content(#window_frame) comes back out.
I wonder if it's possible to achieve this only by using simple jquery events, as it needs to calculate when the #window_frame is opened or not.
here is the complete js for the board (iframe)
jQuery(document).ready(function(){
jQuery(document).on('click', '.item', function() {
jQuery('.loader_container', parent.document.body).show();
var url = jQuery(this).data('url');
jQuery('#window_board', parent.document.body).attr('src', 'url',200);
jQuery('#window_frame', parent.document.body).addClass('animated slideOutLeft');
jQuery('.window_board', parent.document.body).addClass('open animated slideInLeft');
jQuery('.loader_container', parent.document.body).hide();
});
});
and the main menu:
<a onclick="jQuery('#window_frame').attr('src',
'http://lifeto.cafe24.com{$val1['href']}',200),
jQuery('#window_frame').removeClass('animated slideOutLeft')" class="menu_a">MENU</a>

Your question not clear so much, but if i consider only your main question:
how to execute jquery function after one another
you can use promise().done() or .when() to execute a jquery function after another.
Example:
$('div').click(function(){
$(this).addClass('blah').promise().done(function(){
alert('class added!');
});
});
You can read more about it:
https://api.jquery.com/promise/

jQuery infinite-scroll Not Triggering

I'm making a simple little website to apply a different formatting style to Reddit posts, I'm trying to add the infinite-scroll jQuery plugin but it doesn't do anything. I tried following the (very simple) instructions on the infinite-scroll page and when it didn't do anything I thought I must have entered something wrongly, but then I just copy/pasted the code from the Masonry/Infinite-Scroll example and it still didn't work. Masonry is working perfectly (finally) but I just can't figure out what is wrong with infinite-scroll. I understand the basics of jQuery and JavaScript, but obviously not as much as most of you people, so could you please help me out and let me know what is wrong? My site is live at reddit.ymindustries.com.
Thanks heaps, you guys have rarely failed me so far.
YM
EDIT: If there aren't enough images to fill up the page on the homepage, visit reddit.ymindustries.com/r/aww for more images.
EDIT 2: I believe I located the issue, it is described here: https://github.com/paulirish/infinite-scroll/issues/5
Now to figure out a fix...
EDIT 3: Added a little bit of a hack in to make it sort of work, but it just seems to loop the second page endlessly now. Hmm...

I think your problem is actually css. Make your page longer that client area height. add more images to $container
Point is, botom edge of your $container need to pass bottom of window so scroll event fires so infinite scroll can react on this event and calculate weather or not edge is reached
BTW, in same cases, for instance, when I shrink my window, the example you set is working.
=== UPDATE ===
I found some time to play with infinitescroll and here is final working script, just set pathParse method in your script
$(function () {
var $container = $('#itemContainer');
$container.imagesLoaded(function () {
$container.masonry({
itemSelector:'.item'
});
});
$container.infinitescroll({
navSelector:'.navigation', // selector for the paged navigation
nextSelector:'.navigation #next', // selector for the NEXT link (to page 2)
itemSelector:'.item', // selector for all items you'll retrieve
bufferPx:40,
debug:true,
columnWidth:function (containerWidth) {
return containerWidth / 5;
},
loading:{
finishedMsg:'No more pages to load.',
img:'http://i.imgur.com/6RMhx.gif'
},
pathParse: function(path,page){
return $(this.nextSelector).attr("href");
}
},
// trigger Masonry as a callback
function (newElements) {
// hide new items while they are loading
var $newElems = $(newElements).css({ opacity:0 });
// ensure that images load before adding to masonry layout
$newElems.imagesLoaded(function () {
// show elems now they're ready
$newElems.animate({ opacity:1 });
$container.masonry('appended', $newElems, true);
});
//console.log("test (never fired :( )");
}
);
});
Now, since your next link will not update by it self (http://reddit.ymindustries.com/?after=t3_yh4av), you need to change the callback to pull out last element from ajax response and change next link... could be something like this
function (newElements) {
// hide new items while they are loading
var $newElems = $(newElements).css({ opacity:0 });
// ensure that images load before adding to masonry layout
// ======> if query parameter after=... is caring filename then do this
var lastImageUrl= $newElements[$newElements.length-1].attr("src");
var lastFileName= lastImageUrl.substring(lastImageUrl.lastIndexOf("/") +1, lastImageUrl.lastIndexOf("."));
$("#next").attr("href", "http://reddit.ymindustries.com/?after="+lastFileName);
$newElems.imagesLoaded(function () {
// show elems now they're ready
$newElems.animate({ opacity:1 });
$container.masonry('appended', $newElems, true);
});
//console.log("test (never fired :( )");
}

You also need to take care of wich version of infinite-scroll your using since if you use the ones that comes with masonry/isotope (version 2.0b2.110713), both need a little hack in order to call the function and not use the predefined array:
//old code, to be changed (line 489)
desturl = path.join(opts.state.currPage);
// new code
desturl = (typeof path === 'function') ? path(opts.state.currPage) : path.join(opts.state.currPage);
This is already fixed in the newer versions of infinite-scroll

I had the same problem with jQuery's "infinitescroll" and Masonry. You might just solve this by giving your page more initial items so that the plugin's scrolling detection kicks in.
In WordPress this is under the "Reading" settings. By default WordPress only opens 10 items at a time. You could increase that number to 100/page to be more sure the window will be full initially. I had some code here that was just horrible, turns out I just needed longer pages, not more code.
So it's difficult to test these plugins on large displays if you don't have enough images. Maybe the solution is to scale the images larger on large displays so you're more sure about getting your content below the fold.
If you think someone might get to your website with a really huge display, I'm not sure what the answer is other than showing more items/page and maybe adding $('#masonry').infinitescroll('retrieve'); to your footer to load an extra page just in case.