Optimize the loading of my Tumblr with JavaScript to customize styles - javascript

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Hi !
Reader, if you are not comfortable with Tumblr, please tell me, I will give more details!
I had some issues on my tumblr page with the default theme 'Optica'. When I post an embed SoundCloud track, here is what I get on the page:
photo below
NOTE: I have tried to change the theme, and I discovered that for some of them, everything goes fine, but there are a few others with the same bug
So I've tried to fix that, and I've located the origin of the bug in the styles sheet main.css:
.video .video-wrapper {
background: #111;
position: relative;
padding-bottom: 56%;
height: 0;
}
The thing is, that to publish an embed code, you have to do it through the "Video post" tool on your tumblr dashboard, which then allows to style the embed code with the .video-wrapper
Of course, what I want to do here is reducing the bottom padding, but if I do it that way, it will affect all "Video posts". So I used the existing class .soundcloud_audio_player in the iframe to "mark" this type of Video posts to be able to change the styling only of these Video posts.
I have simplified it, and here is what it looks like at the end in browser:
<article class="audio not-page post-70801339374 " data-post-id="post_70801339374">
<div class="post-wrapper clearfix">
<section class="post">
<figure>
<div class="video-wrapper">
<iframe class="soundcloud_audio_player" />
</div>
</figure>
<section class="attribution-tags clearfix">
<ul>
<li>
SoundCloud
</li>
<li>
Blutch
</li>
</ul>
</section>
</section>
<section class="panel" />
</div>
<article>
And now, what I have put between tags in my Tumblr customized HTML:
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load("jquery", "1.3");
google.setOnLoadCallback(function() {
jQuery(function($) {
$("iframe.soundcloud_audio_player").parents('div.video-wrapper').css("padding-bottom", "17%");
});
});
</script>
I used jQuery because I didn't know anything about JavaScript or jQuery before today, and I thought it what simpler! But maybe I'm wrong. Anyway, PROBLEM #1 FIXED!
NOW, PROBLEM #2
When the page is loading, the former styling (before than JS intervene) appears for 1 or 2 sec (with my bandwidth anyway!) and it's quite ugly:
photo below
I've looked a bit here
http://www.memodev.com/wiki/Optimiser_un_site_Web
and here
https://developers.google.com/speed/docs/best-practices/rules_intro?hl=fr-FR
But I can't find how to improve the loading, and I hope some of you guys can :)
PageSpeed test below

It sounds like you just want to hide the fact that styles are changing after the page loads -
So, this will do the trick very basically :
Add this to your HTML:
<div id="screen"></div>
Add this to your CSS :
div#screen {
position:fixed;
height:100%; width:100%;
background:white;
z-index:999;
}
You might not need the z-index
There are lots of loaders you can use in place of this, if you would like -
and then,
In JQuery:
$(document).ready(function(){
// Here, you insert that code that adds the padding to your iframe, and whatever else
// you need to do to prepare the page...
$("#screen").hide(); // this will display your page - !
});

Related

Making text align with DIV in div-based HTML page in CSS?

My page for a clone script can be found at https://jsfiddle.net/k68dm4wj/
The problem is getting the text and image for a DIV to align next to the image with a small amount of space between the top and next to the image, like this example.
This is my code, taken from the JSFiddle above:
<div class="card">
<img class="listing-main-image" src="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Audi_A6_Allroad_Quattro_C8_IMG_1975.jpg/880px-Audi_A6_Allroad_Quattro_C8_IMG_1975.jpg">
<div class="card-info">
<h2 class="listing-title title-wrap">Audi A6 Allroad Sport 55 TFSI 340PS 3.0</h2>
<p class="listing-attention-grabber ">BRAND NEW 2020 CAR</p>
<ul class="listing-key-specs ">
<li>2020 (20) reg</li>
<li>Estate</li>
<li>40 miles</li>
<li>3.0L</li>
<li>339BHP</li>
<li>Automatic</li>
<li>Petrol</li>
<li>1 owners</li>
</ul>
<ul class="listing-extra-detail">
</ul>
<p class="listing-description">2020 (20) reg, black, 40 miles £46,796</p>
<div class="seller-info ">
<div class="phone-code">
Tel: (0114) 49600000
</div>
<div class="seller-type">
Trade seller
</div>
<div class="seller-location">
<span class="seller-town">Sheffield</span> -
43 miles away
</div>
</div>
</div>
<section class="price-column">
<div class="vehicle-price">£46,795</div>
</section>
</div>
Although my code works properly, getting it to look similar to the page I linked to - at least for the DIV part of my code is the main problem. This relates to where I have .
There is also a second problem; I want to include smaller images and allow the user to scroll through them with jQuery or javascript, but the main image in remains the first one; also, how to include a logo after the images at the end like in the linked-to page (if there's one needed; not every div will need a logo).
Like this:
This is the intended end result:
I should add, the JSFiddle linked to has one large CSS file in there, when I've actually got three separate files - one for the layout, one for basics, and one for webfonts. For JSFiddle, I had to condense it into one CSS file there; the original file has CSS links in the header.
I would really appreciate any advice or guidance on making this look better.
Try using overflow: hidden in .layout{}. Also use "white-space: nowrap" in unordered list.It will not wrap your content on next line.For example:
.layout{
//rest of the styling here ....
overflow: hidden;
}
.ul{
//rest of the styling here ....
white-space: nowrap
}
.card-info
{....}
.card-price
{
padding: 1rem;
font-size: 0.9rem;
}
In Your CSS Change the padding of card-price from 2rem to 1rem
check the space in the image

FAQ page shows answers automatically

I'm trying to create a drop down FAQ page with jQuery and for some reason the answers are showing when I load the page.
I have my jQuery script on my page
<script src="http://code.jquery.com/jquery-2.1.4.min.js"></script>
And my javascript page:
<script src="js/threecatsdesign.js"></script>
My full javascript is this:
$(document).ready(function() {
$("#categories h3").click(
function() {
$(this).toggleClass("minus");
if ($(this).attr("class") != "minus") {
$(this).next().hide();
}
else {
$(this).next().show();
}
$("#image").attr("src", "");
// needed for IE so a placeholder isn't displayed for the image
$("#image").attr("style", "display:none;"); }
); // end click
}); // end ready
My HTML is this code:
<main id="categories">
<h3>What is this site about?</h3>
<div>
<ul id="web_images">
<li>We are a website that holds Photoshop lessons called tutorials. Please read our about me page for more information.</li>
</ul>
</div>
<h3>If you hold contests on the site, how do I enter?</h3>
<div>
<ul id="java_images">
<li>Go to our page called contests in the nav bar and you will need to fill out the form in order to enter.</li>
</ul>
</div><p>
<h3>I have a tutorial I would like to suggest or put up my own. How do I do that?</h3>
<div>
<ul id="net_images">
<li>Please go fill out our contact form and you will be contaced with 24 hours or less on how to proceed.</li>
</ul>
</div>
You need to add some css to hide the questions to begin with.
<style>
.faq-question div {
display:none;
}
</style>
I suggest putting this in a different file, but inline styles like this work for a quick and dirty solution.
You also should wrap each question and answer in a tag like this
<div class="faq-question">
<h3>What is this site about?</h3>
<div>
<ul id="web_images">
<li>We are a website that holds Photoshop lessons called tutorials. Please read our about me page for more information.</li>
</ul>
</div>
</div>
And change your JS to reflect the change in elements.
$(".faq-question").click(

windows.print results in empty page

So I'm trying to add a print button to an html page. Most of the page is not supposed to appear in print, so I hide everything in print and then reveal only the one div that is supposed to be printed (or this is what I'm trying to do). But when I try the print button out, the resulting page is completely empty. The html structure of the page looks like this:
<body>
<div id="fullpage">
<div class="section">
some stuff that should not be printed
</div>
<div class="section">
even more stuff that should not be printed
</div>
<div class="section" id="results_page">
<img id="result_image" class="archiv" src="./images/heumarkt/APDC0013.JPG">
<div class="content_wrapper" id="result_text">
<h1 id="result_h1">some stuff</h1>
<h2 id="result_h2">more headlines</h2>
<p id="result_p1">some text</p>
<button class="print_trigger" onclick="javascript:print_stadtarchiv(true)">print</button>
<button class="print_trigger" onclick="javascript:print_stadtarchiv(false)">print without picture</button>
</div>
</div>
</div>
</body>
And here is the CSS that is supposed to hide everything except the div with the id "results_page" (of course the buttons in that div are also supposed to be hidden in print).
#media print {
*{
background-color:transparent;
}
div#fullpage .section, .print_trigger, .unprintable{
display:none;
}
div#fullpage #results_page{
display:block;
}
#result_image,
#result_text {
float: none;
margin: 50px;
}
}
The javascript function is pretty simple, depending on what button the user clicks it adds the "unprintable" class to the picture element and then prints the document (I'm not sure if the html, the css or the js are the culprit here, this is why I include all of this in the question):
function print_stadtarchiv(print_picture){
if(!print_picture) $('#result_image').addClass = 'unprintable';
window.print();
}
So, given all of this, what could be causing the empty page my printer spits out?
For anyone who is having this problem(especially if using bootstrap), it may be a CSS issue and NOT a javascript issue.
My dilemma was that we had a print button towards the top of the page that called "window.print()" function. And it resulted in a blank print preview page. The weird part was that is was working completely fine several weeks ago.
So first, like many threads have mentioned, check that this is not a javascript issue indeed. My call to window.print() did truly bring up the print preview window(meaning we weren't accidentally overriding the print function with another variable somewhere.)
The issue was with Bootstrap's container and container-fluids classes not displaying for print modes. Apparently these classes are being told to be not displayable on print styles(presumably from bootstrap style sheet).
All I had to do was add the following CSS print rules:
.container, .container-fluid {
width: auto;
display: block!important;
}
and it displayed again! This is also hinted at through bootstrap documentation here: http://getbootstrap.com/getting-started/#support-printing
So in a nutshell, check if the CSS is the issue, and stop blaming that poor Javascript.
Here you go:
function print_stadtarchiv(print_picture) {
if(!print_picture) $('#result_image').addClass('unprintable');
return window.print();
}
It also looks like you have no DOCTYPE or html tags... This is likely to cause all sorts of rendering/not-rendering based issues.
<!DOCTYPE html>
<html>
<body>
<div id="fullpage">
<div class="section">
some stuff that should not be printed
</div>
<div class="section">
even more stuff that should not be printed
</div>
<div class="section" id="results_page">
<img id="result_image" class="archiv" src="./images/heumarkt/APDC0013.JPG">
<div class="content_wrapper" id="result_text">
<h1 id="result_h1">some stuff</h1>
<h2 id="result_h2">more headlines</h2>
<p id="result_p1">some text</p>
<button class="print_trigger" onclick="javascript:print_stadtarchiv(true)">print</button>
<button class="print_trigger" onclick="javascript:print_stadtarchiv(false)">print without picture</button>
</div>
</div>
</div>
</body>
</html>
To anyone having the same problem: I couldn't figure out what was causing it, but I could get it done using the window.frame approach elaborated in this answer.

nav going below content on browser resize

I have a strange problem I can't figure out. I'm developing some navigation (that is responsive) independent from the rest of my site, and all is going well, except for one thing. If you load the page at a normal desktop size, the navigation is correctly above the placeholder image. But if you resize the browser window skinnier to where it switches to tablet size, and then resize it wider again, the navigation goes below the placeholder image.
Maybe it's something simple or maybe it's not. I can't figure it out.
My html structure is
<body>
<div id="page">
<div id="wrapper">
<nav></nav>
<section id="content"></section>
</div>
</div>
</body>
So I'm not sure how the content section is getting above the nav, but if you inspect the code and look at the html after doing the resize I describe above, the code becomes
<body>
<div id="page">
<div id="wrapper">
<section id="content"></section>
<nav></nav>
</div>
</div>
</body>
I'm not sure if it's the javascript I'm using or what the deal is that is juggling that and not resetting it. Surely it's not a missing CSS declaration...
EDIT: Resolved! Thanks Chris!
Looking at the code beginning on line #2619, the destroy function expects there to be an element #header, which doesn't exist. Add the element #header as the first element within your #wrapper and the issue will resolve. I'm assuming this isn't your JavaScript, so I wouldn't recommending changing it; instead, adjust your markup to give it what it expects.
Try changing the navigation.js line
a.elt.insertAfter("#content");
to
a.elt.insertAfter("#header");

How to show hidden content where the contents images don't load until the content is shown?

What would be a good way to show hidden content with javascript, without having the image elements <img src="myimage.jpg"> of the hidden content load their images in google chrome or any other browsers until the content is actually shown?
hiding the content with the css rule display: none will not prevent the images from loading, and I would like to avoid using ajax calls.
EDIT 1 as discussed in the comments, a better alternative would be to use a template. As an example I picked John Resig’s Microtemplating engine:
<div id="content_container">
<script type="text/html" id="content">
<div>
<img src="..."/>
</div>
</script>
</div>
<button onclick="document.getElementById('content_container').innerHTML = tmpl('content', {});">show div</button>
See fiddle
EDIT 2
As the original poster commented, it's perfectly possible to grab the contents of a <script type="text/html"> element. Templating engine's not necessary:
<div id="content_container">
<script type="text/html" id="content">
<div>
<img src="..."/>
</div>
</script>
</div>
<button onclick="document.getElementById('content_container').innerHTML = document.getElementById('content').innerHTML;">show div</button>
First Answer
(see in edits)
To do what you want within your requirements you could have javascript write the content when you want it displayed. So you would store your HTML in a javascript string and just use script to then insert it into the page when you want it. Its not a very nice way of doing it but it would mean that it would only load images at that point.
Alternatively you could put the HTML in but have the images pointing at nothing (or a blank placeholder, etc.) and then use script to programatically populate the image sources to the correct values when you call the show function to show the page.
Which of these you choose is probably more about readability than anything else though I would favour the second approach (just tweaking the image sources).
First, define a CSS style:
.invisible {
display: none;
}
Add this class to the objects in the HTML. Then anywhere in the JavaScript, simply add or remove the class, or change the display to block or float etc. In jQuery:
http://api.jquery.com/addClass/
http://api.jquery.com/show/
EDIT:
If you don't want the image to load, then use an AJAX call instead.
http://api.jquery.com/jQuery.get/
jQuery.get('myImage.jpg', function(data) {
jQuery('.imageContainer').html(data);
});
EDIT 2:
Load the src into the img once it's needed. You could check the scroll position etc.
http://jsfiddle.net/LYMRV/
Seems like it is possible to hide content using a script tag with type="text/html", it even prevents any images and iframes from loading in the background,
for example:
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
document.addEventListener('click',function(e){
if(e.target.id=='content_show'){
e.preventDefault();
document.getElementById('content_visible').innerHTML = document.getElementById('content_hidden').innerHTML;//document.getElementById('content_hidden').text also works
}
});
</script>
</head>
</body>
<img src="image1.jpg"/>
<script type="text/html" id="content_hidden">
<img src="image2.jpg"/>
<img src="image3.jpg"/>
<img src="image4.jpg"/>
</script>
Show Content
<div id="content_visible"></div>
</body>
</html>
Only thing to keep in mind is to avoid placing script tags inside #content_hidden.
Now if anyone is friendly enough to point out every flaw in this method, so that we can all benefit.

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