How to get divs to be the same width in jQuery? - javascript

I'm using this JQuery to get a div to be the same width as another when the window width is less than 1200px and can't figure out what mistake I'm making.
var width = $('.creative').outerWidth();
if ($(window).width() < 1200){
$('#right-child').css('width', width);
}else{
console.log('more than 1200');
};

Try to concatenate the value with unit name.
$('#right-child').css('width', width + 'px');

Guess I know whats the problem, your code is right! but... If you test these code with the width of the browser in full, nothing will change. You need to add .resize event (https://api.jquery.com/resize/), just that!
$(window).resize(function(){
console.log('resize!');
var width = $('.creative').outerWidth();
if ($(window).width() < 1200){
$('#right-child').css('width', width);
}else{
console.log('more than 1200');
};
});
If the problem persist, just let me know.

Related

jQuery Script creates infinite loop in Firefox (only)

I wrote a jQuery Script which checks the window size and increases the outer wrapper to fit perfectly into the users window.
function reSize($target){
$target.css('width', $(window).width()+'px');
}
$(document).ready(function(){
setTimeout(function() {
$(window).bind('resize', reSize($('#blocker')));
$(window).trigger('resize');
while($(window).height() < $('.newcontainer').height()+30){
$('.newcontainer').css('width', $('.newcontainer').width() - 10 +'px');
}
$('#chatfenster').css('height', $('.newcontainer').height() - 260 +'px');
$('#userlist').css('height', $('.newcontainer').height() - 350 +'px');
}, 100);
});
It works very smooth in Chrome and Safari but in Firefox it's freezing and I don't know why. Sometimes I feel like Firefox is the new IE.
http://design.maxxcoon.com/bestlife/webinar_chat/ (don't open this link in firefox because it crashes the browser)
Can anybody help me please?
Thanks in advance
This part is very unreliable:
while($(window).height() < $('.newcontainer').height()+30){
$('.newcontainer').css('width', $('.newcontainer').width() - 10 +'px');
}
You are checking the height of the window against the height of the first element found with a class of newcontainer. As long as the height of the window is smaller than that height plus 30 pixels, you set the width of all elements with class="newcontainer" to 10 less than the width of the first one of them.
If your condition is for one dimension (height) and the changes you make is to another dimension (width), the loop will run either never, or probably forever, or possibly randomly...
If there is a maximum height or a maximum width for your .newcontainer elements, you should instead calculate the allowed values for height or width and set them once, not in a loop! Something like this, maybe:
var windowHeight = $(window).height();
var maximumContainerHeight = windowHeight - 30;
$('.newcontainer').css('height', maximumContainerHeight + 'px');
However, I do not know if you want to set width or height, so I'm guessing.
If what you are doing is really setting the width of something, hoping that the layout engine will affect the height as a side-effect, you are going at this the very wrong way.
Another, better, solution is to use modern CSS solutions, like flexbox, to let the browser automatically handle all layout issues.
Figured it out without a loop.
May be helpful for others.
<script type="text/javascript">
function reSize($target){
$target.css('width', $(window).width()+'px');
}
$(document).ready(function(){
setTimeout(function() {
$(window).bind('resize', reSize($('#blocker')));
$(window).trigger('resize');
var windowSize = $(window).height();
var containerHeight = $('.newcontainer').height();
var containerWidth = $('.newcontainer').width();
if(containerHeight > windowSize){
var pixelToMuch = containerHeight - windowSize;
var divFactor = pixelToMuch * 1.67;
var newWidth = containerWidth - divFactor;
$('.newcontainer').css('width',newWidth+'px');
}
$('#chatfenster').css('height', $('.newcontainer').height() - 260 +'px');
$('#userlist').css('height', $('.newcontainer').height() - 350 +'px');
}, 100);
});
</script>

Jquery - Animate by scroll positions to work the same on window resize

Hey I have this really annoying issue thats probably got a simple solution but for the life of me i cant find away to fix it.
Basically i have two images both 50% with of it's container now the goal is the both images to slide in (left/right) on the basis of the scroll position and once it get to the top of the container both images will sit is place.
Now i got that working to that point the only issue is when i resize the page the position of both images are wrong. I obviously did a resize() function with the same logic as the scroll() function but still i got nowhere. Here's my code
var page_width = $(document).outerWidth(),
page_height = $(document).outerHeight(),
left_image = $('.split-screen.youth'),
right_image = $('.split-screen.elite'),
offset = (page_width) / page_height;
left_image.css({'left':'0px'});
right_image.css({'right':'0px'});
$(window).on('scroll', null, function(){
var scrollTop = $(window).scrollTop(),
calc = -(scrollTop*offset);
left_image.css({
'margin-left': 'calc(100% + '+calc+'px)'
});
right_image.css({
'margin-right': 'calc(100% + '+calc+'px)'
});
});
$(window).resize(function(){
// something ???
});
Here is a jsFiddle of the issue although it doesn't look entirely accurate but you get the picture. When you resize the scroll position changes and i need the margin-left/margin-right values to be correct.
I think your problem is that you're still using the old offset value. Just update your global values first, than it works for me (see: https://jsfiddle.net/a7tfmp37/2/):
$(window).resize(function(){
page_width = $(document).outerWidth(),
page_height = $(document).outerHeight(),
offset = (page_width) / page_height;
var scrollTop = $(window).scrollTop(),
calc = -(scrollTop*offset);
left_image.css({
'margin-left': 'calc(100% + '+calc+'px)'
});
right_image.css({
'margin-right': 'calc(100% + '+calc+'px)'
});
});

.css() not setting width value

I'm looking to simply move a divs width as certain pictures load in my application. As such for some reason I read the Div's width add 128 and then use the .css() to change divs new width. For some reason the .css() function isn't updating the width as it goes along. It only updates on the last picture that is loaded. I'm really not to sure why this is happening. Here is some code:
document.getElementById('back').onload = function(){
var width = $("#LoadingBar").css("width").replace(/[^-\d\.]/g, '');
width = parseInt(width);
var newwidth = width + increment;
newwidth = newwidth +"px";
$('#LoadingBar').animate({width:newwidth},"fast");
if(width == 1280) {
//This is another div that I show once all the pictures load
$("#everything").show();
}
}
Any ideas as to what I am breaking?
Use the jquery width property to update element widths.
css is for more esoteric properties of your HTML elements.
$("#LoadingBar").css("width")
Becomes:
$("#LoadingBar").width()
You can set width too
$("#LoadingBar").width(MyWidthValue);
instead of using css width use: var width = $("#LoadingBar").width() to get the numeric value. Then increment it and append units
Just do this to change the width
$(<your element>).width(function (a, w) {return w+=128});
and this if you need to animate
$(<your element>).animate({width:"+=128"},'fast');

Resize height of a container div?

So i'm literally just trying to change the height of a .container classed div with the height of the footer, but i can't seem to get this syntax correct:
$(document).ready(function(){
var containerHeight = $(".container").height();
var footerHeight = $(".footer").offset().top;
if(footerHeight < containerHeight){
$('.container').css('height:', (footerHeight.toString()+'px');
}
});
Can anybody help me out?
$('.container').css('height', footerHeight.toString()+'px');
Use jquery's height function:
$('.container').height(newHeight);

Resizing images in Chrome using JQuery

I just ran into the weirdest of bugs today. I'm not sure if it's a bug in Chrome or something that I can work around but here goes.
I built a JQuery function to resize a set of images that are posted on a forum:
$(".post-message img.post-image").load(function(){
$(this).each(function() {
var maxWidth = 200;
if($(this).width() > maxWidth)
{
var factor = $(this).width() / maxWidth;
var width = $(this).width();
var height = $(this).height();
$(this).css('width', width / factor);
$(this).css('height', height / factor);
}
});
});
The problem is that this only seems to work when I refresh the page. It doesn't work when you press previous or when you get linked to the page.
In chrome the $(img).width() property returns 0 in both cases when the function doesn't work.
This function performs as expected in IE9 and FF3
What can I do to fix this odd behavior?
Most probably because the images are being pulled up from the browser cache, and the load event is not triggering. The way around this is to manually trigger load if the images's complete properties have been set:
$(".post-message img.post-image").one("load", function(){
$(this).each(function() {
var maxWidth = 200;
if($(this).width() > maxWidth)
{
var factor = $(this).width() / maxWidth;
var width = $(this).width();
var height = $(this).height();
$(this).css('width', width / factor);
$(this).css('height', height / factor);
}
});
}).each(function() {
if(this.complete) $(this).trigger("load");
});
Karmin is correct here. I ran into this problem a few years ago and ended up just not relying on img.load. His workaround for manually triggering the load event should work.
However...
Developers should do max-width or height in CSS in this scenario. In fact, it is good programming practice to do what one can in CSS before doing them in javascript.
Additionally, if one were to keep going with this solution, var width and var height should be placed outside of the if statement next to var maxWidth, and used wherever $(this).width() is called (including the initial check on line 4). Right now the code is unnecessarily creating a new jQuery object to get the height each time when it should have stored and used the value from the first check.
Thanks for the contributions guys. A previous answer given on stack - that I apparently couldn't find this afternoon jQuery && Google Chrome - solved my problem!
$(window).load(function() {
$(".post-message img.post-image").one("load", function(){
$(this).each(function() {
var maxWidth = 200;
if($(this).width() > maxWidth)
{
var factor = $(this).width() / maxWidth;
var width = $(this).width();
var height = $(this).height();
$(this).css('width', width / factor);
$(this).css('height', height / factor);
}
console.log($(this).width())
});
}).each(function() {
if(this.complete) $(this).trigger("load");
});
});
The code has to be executed on $(window).load() together with the provided code by karim79.

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