Develop Reference

How to vertically center jQuery Modal?

jQuery code:
function thumb(id,ths) {
if (<?=$loggedin?>) {
$.post(base_url+"index.php/myad/addthumbs", {uniqueid:id});
$(ths).addClass("red");
} else {
_ths=$(ths);
var number = Math.floor(Math.random()*90000) + 10000;
$("#captcha").attr("data-id",id);
$("#captcha").text(number);
$("#pop").modal("show");
}
}
How can I center modal? Please help me and thanks in advance.
I find solution on google and on stackoverflow but question is asked for bootstrap based modal when it build by a pure jquery.

Give your popup a fixed css like this:
#pop {
position:fixed;
top:50%;
left:50%;
}
Then align it by it´s width and height in your JS:
$("#pop").css({
"margin-top":-($(this).height()/2),
"margin-left":-($(this).width()/2)
});

One method is you can adjust the percentage of margin-top style
.modal-dialog {
margin-top:10%; /* Based on your modal height adjust the percentage */
}
OR
.modal-dialog {
padding-top:10%; /* Based on your modal height adjust the percentage */
}

Without using jQuery, you can simply use display: table to the main content container together with margin: auto.
A working example of this centered modal is here.
Basically, these are the important rules:
.modal-content {
display: table;
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
max-width: 60%; /* here you can also use a fixed width */
overflow: auto;
z-index: 50;
}
Use JavaScript or jQuery to trigger the opening and closing of the modal.

Position fixed but still scrollable?

Would it be possible to have a DIV position: fixed, but if the content of that DIV extend beyond the viewing area of the screen then you could still scroll with the window? I've put everything I have thus far in this...
FIDDLE
This code sits inside a media query that gets triggered when the screen hits a max width and/or a max height, but I don't think that code is relevant to my question. This is the bit of code that I believe I need to modify to work correctly:
.expand {
display: block !important;
position: fixed;
-webkit-backface-visibility: hidden;
top: 50px;
left: 0;
background: rgba(31, 73, 125, 0.8);
width: 100%;
z-index: 999;
}
The reason I want this fixed is so the little hamburger menu stays statically in the upper left hand corner of the screen at all times, as at times the site I'm building could be rather lengthy, so I would like viewers to have a little more ease of access.
Thank you!

Yes, you just need to give the div a fixed height and the overflow: auto setting
(Demo)
.expand {
bottom: 0;
overflow: auto;
}
If you don't want to give it a minimum height, a simple (but not supported by old browsers) option would be to use css calc() like so
.expand {
max-height: calc(100% - 50px); // 100% viewport height minus the height of the nav.
}
I would suggest setting a fallback height before in case the browser does not support calc
JavaScript
To achieve what you really want you need javascript. Here it is.
Check to see if the menu is open, if not...
Define a check to see if the contents are larger than the viewport, if so then set bottom: 0px; and overflow: auto and remove scrolling from the body.
If so...
Remove all styles from the menu and the body that were added when opening the menu.
(Demo)
(function($) {
var menu = $('.responsive-menu'), open;
$('.menu-btn').click(function () {
if(!open) {
if(menu.height() > $(window).height()) {
open = true;
menu.css({'bottom': '0px', 'overflow': 'auto'});
document.body.style.overflow = 'hidden';
}
} else {
open = false;
menu.css({'bottom': '', 'overflow': ''});
document.body.style.overflow = '';
}
menu.toggleClass('expand');
});
})(jQuery);

Full Screen Map Beneath NavBar

I'm trying to add a map as a full screen background below my Bootstrap NavBar, but at the moment my code is causing the bottom of the map to overflow the page.
I've tried different margins and positions and I cant get it to show the map within the bounds of the page under the navbar. I understand part of the issue is having top:50px but I don't know how to rectify the problem.
My CSS code is as follows:
#map {
/* Set rules to fill background */
height: 100%;
width: 100%;
/* Set up positioning */
position: fixed;
top: 50px;
left: 0;
}
Here is a screen shot of my page, you can see in the bottom right that the map attribution and controls have been cut off:

You're setting your map height as 100%. Try setting a fixed height, instead.
If it's too wide, add this to your CSS files.
.gmnoprint img {
max-width: none;
}
Alternatively, try this if that doesn't work:
html,body {
height: 100%;
width: 100%;
}
.whateveryourmapis {
height: auto;
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
margin-top: -50px;
}

You need wait until div in which is content is displayed because google map chcecks it width wery early - and gets small width (or 0) and dont render.
Try this:
$('a[data-toggle="tab"]').on('shown.bs.tab', function (e) {
google.maps.event.trigger(map, 'resize');
});
It is callback - when div for content after click on tab is dispayed THEN 'resize' google map on correct width.
For me this works.

Toggle Responsive CSS Code

So in my script I am working on I have MANY various options the user can set VIA variables. Now one of my variables is cfs_responsive and I have a JavaScript if condition checking for true/false or 1/2 values as well as if the actual variable is set. Now where I am stuck is here. Once I get the condition written correctly how am I supposed to turn on and off the responsive css code?
My responsive css code is the following.
/* ===RESPONSIVE=== */
/* CSS DIRECTORY
1. =primaryCATEGORY
2. =subCATEGORY
3. =lowerCONTENT
*/
#media all and (max-width: 1000px) {
/* ===primaryCATEGORY=== */
/* Single Primary Category Divider */
.cfs_primaryCategory {
margin-left: 0px;
position: absolute;
}
.cfs_primaryCategory h1 {
visibility: hidden;
}
.cfs_primaryCategory.cfs_primaryCategory-active h1 {
visibility: visible;
}
.cfs_primaryCategory.cfs_primaryCategory-active {position: relative;z-index: 999;}
/* ===subCATEGORY=== */
/* Single Sub Category Divider */
.cfs_subCategory {
margin-left: 0px;
position: absolute;
}
.cfs_subCategory.cfs_subCategory-active {position: relative;z-index: 999;}
/* ===lowerCONTENT=== */
/* Lower Content Wrapper */
.cfs_lowerContent-wrapper {
padding: 25px 35px 0px 35px;
max-width: 450px;
}
}
Would the only way of doing this be seperating the stylesheet into two different stylesheets then having the js within the if statement include the stylesheet if true?
I would really Like to keep the stylesheet all together.
Let me know what you think.
Huge thanks in advance!

Your idea to keep it as a separate stylesheet and add/remove it from the page is sound.
The only other option I can think of is to add/remove a class on body or another parent element, e.g. <body class="responsive"> and use that in the CSS:
body.responsive .cfs_primaryCategory {...}
JQ
$('body').toggleClass('responsive');
// or $('body').addClass('responsive');
// and $('body').removeClass('responsive');

CSS or JavaScript to highlight certain area of image opacity

I'm looking to do something like this but with CSS or JavaScript.
I need to highlight a certain part of an image but everything I find is how to do it in Photoshop. Can I do this with CSS or maybe JavaScript?
Am I even asking the right question?
EDIT:
Well here is a great submission but I have a follow up question:
I need this for a mobile device and portrait and landscape views as well for many devices like: iOS, iPad, Android, WebOS, Etc... So the fixed position I'm not sure will work.
Any advice?

You could use background-position with absolutely positioned divs as follows:
CSS:
.container {
position:relative;
height:455px;
width:606px;
}
.container div {
position:absolute;
background-image:url(http://www.beachphotos.cn/wp-content/uploads/2010/07/indoensianbeach.jpg);
}
.container .bg-image {
opacity:0.3;
height:455px;
width:606px;
}
.container div.highlight-region {
height:50px;
width:50px;
opacity:0;
}
.container div.highlight-region:hover {
opacity:1;
}
HTML:
<div class="container">
<div class="bg-image"></div>
<div class="highlight-region" style="top:50px;left:50px;background-position: -50px -50px;"></div>
<div class="highlight-region" style="top:150px;left:150px;background-position: -150px -150px;"></div>
</div>
Please see http://jsfiddle.net/MT4T7/ for an example
Credit to beachphotos.com for using their image.
EDIT (response to OP comment): Please also see http://jsfiddle.net/zLazD/ I turned off the hover aspect. also added some borders.
CSS changes:
.container div.highlight-region {
height:50px;
width:50px;
border: 3px solid white;
}
/* removed :hover section */

You can probably fake it, here is a sample:
http://jsfiddle.net/erick/JMBFS/3/
I covered the image with an opaque element. The color of the element is the same as the background of the image. Used z-index to put it on top.

You sure can. For example, most crop plugins provide "highlighting" as the basis of their UI. So for a complete cross-browser solution, just use an existing plugin, like Jcrop.
Of course, you might want it to be fixed, in which case you can programmatically tell the plugin which section to highlight and that the user shouldn't be able to move it, and then it will act as a highlighter, not a cropper.

These are the steps you can take to highlight a part of an image:
Access the image in JavaScript, and dynamically add another identical image immediately after it. (this could be done just in HTML, but it would change the semantics of your markup)
Position the second image over the first image
Apply a css mask on the second image so that only the "highlighted" part shows up
When the user hovers over the images' container, adjust the opacity of the first image.
I can provide more technical details on this later if need be.

What about overlaying the cropped image (with 100% opacity) on top of the whole image (with 30% opacity)?
This answer is only a proof of concept
body {
margin: 0 0 0 0;
padding: 0 0 0 0;
}
.img {
position: absolute;
top: 0;
left: 0;
}
.img-base {
opacity: 0.3;
z-index: -99;
}
.img-overlay {
opacity: 1.0;
}
.cropper{
width: 150px; /* input width and height of the box here */
height: 120px;
overflow: hidden;
position: relative;
padding: 0 0 0 0;
margin: 0 0 0 0;
left: 90px; top: 170px; /* input starting location of the box here */
}
#overlay1 {
position: absolute;
left: 0px; right: 0px;
margin-left: -90px; margin-top: -170px; /* input starting location of the box here */
}
<img src="https://images.unsplash.com/photo-1583355862089-81e9e6e50f7a?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=334&q=80" class="img img-base">
<div class="cropper">
<img src="https://images.unsplash.com/photo-1583355862089-81e9e6e50f7a?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=334&q=80" class="img img-overlay" id="overlay1">
</div>