div max-height set dynamically using javascript - javascript

I have a web app using master page and content pages (see the attached image). I need to set max-width of one div in content page dynamically accordint to the browser window size (so that the whole app stays on the page, without scrolling). I couldn't find the sloution (or couldn't replicate the results) using just html and CSS. So I'm thinking to do it using javascript. But the problem is, I NEVER used it, so I really have no clue how to do it. I'd really appriciate if someone took a couple of minutes and write the function that will do it. As I see it, I should take difference in height between bottom edge of the header and top edge of the footer and subtract height values of searchbar and button bar.
EDIT:
Thanks to maxedison for providing that code. But, how do I use it? :D I'm a total noob. I have a problem, since I use masterpage and content pages. Where do I put that code?
EDIT 2 - THE ANSWER:
I looked a little further into how to use jQuery, and searched here some more, and I found a solution. Next time I start developing an application, I'll use jQuery from the bottoms up...It just simplifies some things so much. :)
So for the solution: It's similar to what maxedison suggested, but I changed it so, that I set height with CSS and I just added a fixed value to deduct from window.height.
<script type='text/javascript'>
$(function () {
$('.myStyle').css({ 'height': (($(window).height()) - 350) + 'px' });
$(window).resize(function () {
$('.myStyle').css({ 'height': (($(window).height()) - 350) + 'px' });
});
});
</script>

Using jQuery, it would look something like:
function resetHeight(){
var newHeight = $(window).height() - $('.header').outerHeight() - $('.searchBar').outerHeight() - $('.buttons').outerHeight() - $('.footer').outerHeight();
$('.content').height(newHeight);
}
$(function(){
newHeight();
$(window).resize(function(){
resetHeight();
});
});

Related

Want to change sticky sub nav position on window resize depending on header height

I'm very unfamiliar and still learning javascript/jQuery and I'm having trouble putting together the syntax to change a secondary navigation bar offset position to stick to a header that adjusts its size when the screen size changes (logo is setup to viewpoint percentage, hence its height varies with screen size).
So far I got the first part of the following script to calculate the header outerHeight and it works on any screen size but only on the first page load (not while resizing in real time).
jQuery(document).ready(function resizeHeader ($){
$('#CPOP-header').each(function(){
$('#CPOP-sticky-sub-menu').css({
'top' : $(this).outerHeight(true) + 'px'});
});
$(function() {
$(window).on('resize',resizeHeader);
alert($('#CPOP-header').outerHeight(true)+'px'); // works on first page load only, will remove later
});
});
However, I want it to "monitor" browser window resize dynamically to avoid browser refresh but I can't figure out how to bind or merge the second part on the same script since I'm not very familiar with javascript/jQuery:
$(function() {
$(window).on('resize',resizeHeader);
alert($('#CPOP-header').outerHeight(true)+'px'); // works on first page load only, will remove later
});
This is for a WordPress/Elementor website, the code will be inserted in an HTML widget.
Any help will be much appreciated!
if anyone is looking for something similar, here it is
const $ = jQuery;
function resizeHeader () {
$('#CPOP-header').each(function(){
$('#CPOP-sticky-sub-menu')
.css({'top' : $(this).outerHeight(true) + 'px'})
});
}
jQuery(document).ready(resizeHeader);
$(window).on('resize',resizeHeader);
Thank you to u/toi80QC at reddit for taking the time and giving a hand!

CSS / jQuery: Placing items at window height causing layout issues

Currently I am using jQuery to position a few elements relative to the size of the window. While this works perfectly if the window is full size, if I have the debugger open or a shorter window, the resulting layout is incorrect.
Q: Is there anyway to place things relative to the maximum possible window height, rather than the current window height?
jQuery
var navbarHeight = parseInt($(".navbar").css("height"));
$("#home-part-1").css("height", $(window).innerHeight() - navbarHeight);
$("#home-part-2").css("height", $(window).innerHeight());
$("#home-part-3").css("height", $(window).innerHeight());
$("#divider-1").css("top", $(window).innerHeight() - navbarHeight);
$("#divider-2").css("top", (2 * $(window).innerHeight()) - navbarHeight);
It is bad practice to try to lay out your page this way. There is not a lot I can do to help with the solution you are specifying. Its not going to work that way. Take a look at this though: http://alvarotrigo.com/fullPage/#firstPage . That might help you.

How to ignore javascript on smaller resolutions?

My dev site uses lots of Skrollr animation at 1024px resolutions and up. Under 1024px, I don't want the animation to show, so I hid all of the images and whatnot.
However, the javascript that gets called to make the animation work is still getting called on smaller resolutions and causing some issues.
Is there a way to basically say "If the resolution is less than 1024px, ignore these JS files"?
I tried putting them in a DIV and using my existing CSS media queries to "display: none" the DIV on smaller resolutions, but that doesn't work.
FYI, these are the files being called:
<script type="text/javascript" src="/js/skrollr.min.js"></script>
<script type="text/javascript" src="/js/homepageanimation.js"></script>
On top of the jQuery(function($) { in http://workwave.joomlatest01.mms-dev.com//js/homepageanimation.js put something like
jQuery(function($) {
if(screen.width < 1024) {
return;
}
// skrollr stuff....
}
so all the skrollr functions won't be called on screen sizes with a width below 1024px.
The easiest way is too use jQuery..
$(window).width();
plain Javascript:
var w = window.innerWidth;
var ow = window.outerWidth; //toolbars and status, etc...
if(w > 1024) {
//Skrollr
}
from there an small if to trigger the Skrollr event
I would suggest conditionally loading the script. Basically the script only gets loaded if the screen size is greater than 1024.
if(window.innerWidth >= 1024){
var file = document.createElement('script')
file.setAttribute("type","text/javascript")
file.setAttribute("src", "/js/skrollr.min.js")
}
A nice approach here would be to only call the function that initiates the Skrollr functionality at given screen sizes. A real quick Google suggests that Skrollr has a .init() function that gets things rolling.
Without seeing how the JS is set up it's hard to give any solid advice, but here's an idea:
You have a JS file for the page/site that contains a conditional that checks the width of the window before initializing the plugin after the document is ready.
$(document).ready(function() {
if ($(window).width() > 1023) {
skrollr.init();
}
});
jQuery makes this a lot easier too, so it's worth taking advantage of that.
Another option to consider instead of going via window width (which can sometimes be inconsistent with the CSS widths among different browsers) is to test against a CSS rule and whether it is true, so use one you know would be true at a size above 1024px, and this would eliminate any inconsistency.
Within this condition link the JQuery files as demonstrated in other answers.

Find height of class and apply to another class

I've been looking around the web for an answer for a couple of hours and cannot find anything so I'm hoping someone can help me.
I want to take the height of a wrapper div who's class is movie and apply it to an inner div who's class is movie-center. How can I do this using JS or jQuery?
I am a newbie when it comes to JS, so I would really appreciate if you could lay everything out for me (including any HTML needed).
Thank you!
EDIT 1: Maybe if I am explaining what I am doing people will have a better understanding. I am making a responsive WordPress theme. As the width of the browser is smaller, the movie widths are smaller. I want the overlay title and graphic to stay in the center. I tried doing this with CSS and it cannot be done fully unless I know the exact height (which I won't because of resizing).
EDIT 2: here is the browser's rendered html code:
<article id="movie-97" class="post-97 movie type-movie status-publish hentry"><a href="http://localhost:8888/movies/hard-truth-levity-hope">
<div class="movie-center">
<div class="movie-overlay">
<div class="movie-play"></div>
<h2 class="movie-title">Hard Truth, Levity and Hope</h2>
</div> <!-- end .movie-overlay -->
</div> <!-- end .movie-center -->
<div class="movie-thumb"><img width="480" height="270" src="http://localhost:8888/wp-content/uploads/2014/03/truth-levity-hope.jpg" class="attachment-movie-thumb wp-post-image" alt="Hard Truth, Levity and Hope" /></div>
EDIT 3: Here's a Pastebin for my website. Note: it has been stripped down to only show the essential parts of the site.
What you've done is the correct way. Make sure you've loaded jQuery properly and try to wrap your code inside DOM ready handler $(document).ready(function() {...}); or shorter form $(function() {...});
$(function() {
$('.movie').each(function() {
var h = $(this).height();
$(this).find('.movie-center').height(h);
});
});
Edit: Since you're using Wordpress, there's probably a conflict happen here, try to use:
jQuery(document).ready(function($) {
$('window').resize(function() {
$('.movie').each(function() {
var h = $(this).height();
$(this).find('.movie-center').height(h);
});
}).resize();
});
Please try this :
/* Get height of .movie thumb preview */
jQuery(document).ready(function($) {
$('.movie').each(function() {
var h = $(this).height();
console.log(h);
$(this).find('.movie-center').first().css('height',h);
console.log($(this).find('.movie-center').first().height())
});
});
Connor,
This will get you what you're looking for:
jQuery(document).ready(function($) {
$('.movie').each(function() {
var h = $(this).height();
$(this).find('.movie-center').height(h);
});
});
A quick explanation. You'll notice that jQuery's .height() function is called twice. First, without any params and then with h passed in.
Pull up your JS console (cmd+opt+j if you're using Chrome) to see how this actually works.
The question at the top of this page has an id of #question-header, so if you enter this in the console $('#question-header').height() you'll see that it returns 36. That's because that element is 36 pixels tall.
So, calling .height without any params will return the height of the selected element. But, we can set the height by passing in a number. Try this by pasting this in to the JS console:
$('#question-header').height(1000)
The header is now 1000px tall!
The third line of the code basically says, "Hey, within this particular instance of the .movie article, find the .movie-center element and set the height.
So, there you go. Some working code and hopefully an explanation as to exactly why/how to use it in the future.

Jquery $(window).height() function does not return actual window height

I have a page that I need to dynamically load ajax content when the user scrolls to the bottom. The problem is that JQuery is not returning the correct window height. I have used this function before and have never seen it fail, but for some reason it will return the same value as the document height. I have the test page here: bangstyle.com/test-images
I have coded the alert to display at page load, and also whenever the user scrolls 500px below the top:
function scroller() {
if($(window).scrollTop() > 500){
delay(function(){ //200ms wait
pagecounter++;
sideshow();
alert("window height: " + $(window).height() + " scrolltop: " + $(window).scrollTop() + " document height: " + $(document).height());
return false;
}, 200 );
}
}
I tried posting this before but I deleted it as I didn't get a solution. I hope it is ok to post a link to my test page. BTW I have tested this on Mac Safari and Mac FF. I have run this same code on other pages and it works fine. I feel there must be something in the dom of this page that causes JS to fail, but no idea what that would be.
Look at your HTML souce code.
The first line should be <!DOCTYPE html> and you have <style> tag instead.
So it seems that your document is running in Quirks Mode and jQuery can't calculate correct window dimensions.
//works in chrome
$(window).bind('scroll', function(ev){
//get the viewport height. i.e. this is the viewable browser window height
var clientHeight = document.body.clientHeight,
//height of the window/document. $(window).height() and $(document).height() also return this value.
windowHeight = $(this).outerHeight(),
//current top position of the window scroll. Seems this *only* works when bound inside of a scoll event.
scrollY = $(this).scrollTop();
if( windowHeight - clientHeight === scrollY ){
console.log('bottom');
}
});
I had the same problem.
I've found some things:
1) the problem happens when you try to get the actual height before document is completed rendered;
2) the problem happens in google chrome when you does not use corret DOCTYPE (mentioned above)
3) it always happens in google chrome even after the document is rendered completly.
For google chrome, I've found a workaround here: get-document-height-cross-browser
I'm using this solution only for google chrome and it resolved my problem, I expect helps someone that still have the problem.
This is an old question but I recently struggled with not getting the correct window height in IE10 by a few pixels.
I discovered that IE10 applies a 75% zoom by default and that screws the window and document measurements.
So, if you're getting wrong width or height, make sure zoom is set to 100%.
Did some looking around and stumbled upon this, don't know if it helps but it's worth bringing up.
why is $(window).height() so wrong?
Since jquery (and dom in general) is not calculating sizes correctly in quirksmode, two solutions:
Add doctype html at the top of your page (like mentioned in "correct" answer), or
Use window.innerHeight, window.innerWidth if first option is not an option.
Hope it helps.
I moved my scripts from to footer and that resolved it for me.

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