The background element is static, when scrolling the content of the box - javascript

After the pop-up box pops up in the web, when I want to scroll the content of the pop-up box, the background element cannot scroll. After closing the pop-up box, the position of the background element will remain unchanged. Any suggestions to achieve this?

You can use js to dynamically set the style of the pageview package of the body and the child elements of the body. For example:
Html:
<body>
<div class="pageview"></div>
</body>
JS:
$('#dlg_btn__open').click(function () {
// ...something else
var st = $(window).scrollTop();
$('body').css({ height: '100%', overflowY: 'hidden' }); // Fix background
$('.pageview').css({ position: 'fixed', top: (-1 * st) + 'px' }); // Fix background
});
$('#dlg_btn__close').click(function () {
// ...something else
var st = $('.pageview').css('top').replace('-', '').replace('px', '');
$('body').css({ height: 'auto', overflowY: 'visible' });// Cancel fixed background
$('.pageview').css({ position: 'relative', top: 0 });// Cancel fixed background
window.scrollTo(0, st);// Roll to original position
});

Related

Popup should display on top of element if no proper space in bottom

I want to display the popup on the top of element if there is no proper space on the top. Currently it hides inside the window as seen in the image below:
I can update the top position but I only want when there is no proper space otherwise it is ok.
Please let me know how to determine if the clicked position in near window edges.
JSFiddle Link :http://jsfiddle.net/g4g4negf/
Code I am using to get the position:
$(document).ready( function() {
$('.clickme').on('click', function(e) {
$('#popup').offset({ top: e.pageY, left: e.pageX}).fadeIn();
});
Check out this JSFiddle
To check if clicked position is near window edge, you have to get window's height ($(window).height()) and scroll position (window.pageYOffset). By adding these two values, you can find the scrolled position of the window. Then compare this sum with e.pageY+$("#popup").height() (this is the sum of the clicked position's height and the popup's height). If the latter is less than the former, it means the popup can be shown. If (e.pageY+$("#popup").height())>($(window).height()+window.pageYOffset) it means the popup will overflow the window's bottom border, then its top offset should be changed to e.pageY-$('#popup').height().
Here is the complete function:
$('.clickme').on('click', function(e) {
var h;
if((e.pageY+$('#popup').height())<($(window).height()+window.pageYOffset)) h=e.pageY;
else h=e.pageY-$('#popup').height();
$('#popup').offset({ top: h, left: e.pageX}).fadeIn();
});
Considering your popup height is 100px, you can try this...
$(document).ready( function() {
var h = window.innerHeight;
$('.clickme').on('click', function(e) {
alert(h + ", " + e.pageY);
if( h - e.pageY < 125) {
$('#popup').offset({ top: h-125, left: e.pageX}).fadeIn();
}
else {
$('#popup').offset({ top: e.pageY, left: e.pageX}).fadeIn();
}
});
});

scrollTop suddenly not working for sticky menu

I had this working with no problems for the entire build of the site. Then, the day I was supposed to launch, the sticky menu stopped working right. The menu is supposed to start at the bottom, scroll to the top, then stick (position: fixed).
Now, it scrolls about 10px and then jumps to the top. Why is the scrollTop distance not calculating correctly?
Live site at [site no longer exists]
Here's the code for the sticky menu. I'm also using JS to set min-height of divs to window height, but haven't included that code here.
$(function(){
var stickyRibbonTop = $('#wrapper-wcf53badf7ebadf7').offset().top;
$(window).scroll(function(){
if( $(window).scrollTop() > stickyRibbonTop ) {
$('#wrapper-wcf53badf7ebadf7').css({position: 'fixed', top: '0px', 'background-image':'url(http://amarshall.360zen.com/wp-content/uploads/2014/07/menu-fade-background2.png)'});
$('#block-bcf53bf14093931c').css({display: 'block'});
} else {
$('#wrapper-wcf53badf7ebadf7').css({position: 'static', top: '0px','background-image':'none'});
$('#block-bcf53bf14093931c').css({display: 'none'});
}
});
});
Thanks in advance for any help! I'm not a JS or jQuery expert yet, so any suggestions for cleaning things up would be appreciated.
NOTE: The site is built on WordPress, so no-conflict mode is in effect.
I think you are initialising the sticky menu function before you set the min-height of $('big-div').
On page load, the menu starts at 54px from the top, and so when you store the offset().top value as stickyRibbonTop, it is stored at 54px. Then on your scroll event you are comparing against this.
Try setting the min-height of the divs first in your code, then run this same script afterwards. The value of stickyRibbonTop should then be correct.
Bear in mind that you will need to reset stickyRibbonTop every time the window.height() is updated, so you should probably make this sticky menu function a named function and call it at the end of the wrapper_height function. something like this:
function stickyNav() {
var stickyRibbonTop = $('#wrapper-wcf53badf7ebadf7').offset().top;
$(window).unbind('scroll', scrollEvent);
$(window).on('scroll', stickyRibbonTop, scrollEvent);
};
function scrollEvent(event) {
var stickyRibbonTop = event.data;
if ($(window).scrollTop() > stickyRibbonTop) {
$('#wrapper-wcf53badf7ebadf7').css({ position: 'fixed', top: '0px', 'background-image': 'url(http://www.adammarshalltherapy.com/wp-content/uploads/2014/07/menu-fade-background2.png)' });
$('#block-bcf53bf14093931c').css({ display: 'block' });
}
else {
$('#wrapper-wcf53badf7ebadf7').css({ position: 'static', top: '0px', 'background-image': 'none' });
$('#block-bcf53bf14093931c').css({ display: 'none' });
}
};
function wrapper_height() {
var height = $(window).height();
var wrapperheight = height - 75;
wrapperheight = parseInt(wrapperheight) + 'px';
$(".bigDiv").css('min-height', wrapperheight);
$("#wrapper-wcf53bad125d7d9a").css('height', wrapperheight);
stickyNav();
}
$(function () {
wrapper_height();
$(window).bind('resize', wrapper_height);
});

JS Move a Div by Scroll Location

I want to move a bootstrap "navbar" header off the page when the navbar's position on the page reaches 400px.
If you look at this jsfiddle, I want the .navbar to leave the top of the page when the blue block begins (at 400px). The navbar would stay on the page through the red div, then leave the top of the page when the blue block begins.
I have tried to do this with scrollorama (jquery plugin), but have not had success yet:
$(document).ready(function() {
var scrollorama = $.scrollorama({ blocks:'.scrollblock' });
scrollorama.animate('#fly-in',{ delay: 400, duration: 300, property:'top', start:-1400, end:0 });
});
I am looking for either a pure javascript solution, or with the scrollorama plugin. Thanks for any ideas!
I'm not very familiar with the scrollorama plugin but you can get this done simply with jQuery via the scroll() event:
$(window).scroll(function () {
var winTop = $(this).scrollTop();
var redHeight = $('#red').height();
if (winTop >= redHeight) {
/*if the scroll reaches the bottom of the red <div> make set '#move' element
position to absolute so it will move up with the red <div> */
$('#move').css({
'position': 'absolute',
'bottom': '0px',
'top': 'auto'
});
} else {
//else revert '#move' position back to fixed
$('#move').css({
'position': 'fixed',
'bottom': 'auto',
'top': '0px'
});
}
});
See this updated jsfiddle: jsfiddle.net/52VtD/1945/
Edit: make it so that the navbar disappears at the same point that the red div ends
I noticed that earlier as well but I'm having trouble locating the problem so I removed your imported style sheet and created a basic style for the navbar. To get the navbar disappears at the same point that the red div ends you need to subtract the navbar's height to the condition:
if (winTop >= redHeight - $('#move').height()) {
I've also restructured the markup to get this working properly. I've nested the navbar inside the red div and set the red div's position to relative.
See this jsfiddle: jsfiddle.net/52VtD/1981/
listen to the scroll event using jquery to find if the navbar overlaps with the red or blue div
Assign a class to the red div
<div class="redDiv" style="height:400px; background-color: red;">
Then listen to the scroll event and use the getBoundingClientRect() to find the co-ord of the navbar and the div in the view port to check for overlap
$(document).scroll(function(event)
{
var rect1 = $('.navbar').get(0).getBoundingClientRect();
var rect2 = $('.redDiv').get(0).getBoundingClientRect();
var overlap = !(rect1.right < rect2.left ||
rect1.left > rect2.right ||
rect1.bottom < rect2.top ||
rect1.top > rect2.bottom)
if(!overlap)
{
if ( $(".navbar").is(":visible") ) {
$('.navbar').hide();
}
}
else
{
if ( !$(".navbar").is(":visible") ) {
$('.navbar').show();
}
}
});
Here is a working fiddle
http://jsfiddle.net/SXzf7/

Sidebar that does't scroll more than its contents

I have a page with long content on it. Together with that there is a sidebar which has less content and at the moment if you continue scrolling down, at some point there will be just whitespace in a sidebar.
So what I tried to do is once sidebar reaches end of its content, height give it fixed position, but while there are still things to scroll give it static position.
So I've got
$(window).scroll(function () {
var y = $(window).scrollTop();
var x = $(window).scrollTop() + $(window).height();
var s = $('#sidebar').height();
if (x > s) {
$('#sidebar').css({
'position': 'fixed',
'bottom': '0'
});
}
if (x < s) {
$('#sidebar').css({
'position': 'static'
});
}
});
This kinda works. It starts with static position, but when I scroll in any direction it changes to fixed. However I want it to remain static while there is something to scroll through (in upwards and downwards directions)
EDIT Basically it should work like this: http://jsfiddle.net/cJGVJ/12/ but without the shadow effect.
Give HTML and BODY height: 100%;
html, body{
height: 100%;
}
#sidebar{
position: absolute;
bottom: 0px;
}

Change Div Y Position with mouse wheel and sidebar

I need that when I scroll down or up with mouse wheel or sidebar my div change incrementally the Y position (for example 50px up or down ). I need this in Javascript/Jquery.
I Try this code, but only works for scrolling down(The Scrolling Down and Up Function is working well, only the animate part is working wrong):
UPDATE:
var sidebarScrollTop = 0;
$(document).ready(function() {
sidebarScrollTop = $("body").offset();
$(window).scroll(function ()
{
var docScrollTop = $('body,html').scrollTop();
if(docScrollTop > sidebarScrollTop.top)
{
$("#legend").stop().animate({ marginTop: "+=50px",}, 'slow', "easeOutCirc" );
}
else
{
$("#legend").stop().animate({ marginTop: "-=50px",}, 'slow', "easeOutCirc" );
}
});
});
$(window).resize(function()
{
sidebarScrollTop = $("#legend").offset().top;
});
$(document).resize(function()
{
sidebarScrollTop = $("#legend").offset().top;
});
Thanks
You can use
$(window).scroll(function() {
// Your scroll code here
});
to grab whenever the user is scrolling on the page.
Next you want to change the div's y-value.
If the div is positioned absolute, this is just changing its top-value.
$('my-div').top = original-top-value + $(window).pageYOffset;
I believe you need is to keep the div always showing even when user scrolls down. If that is the case then it can be done with only CSS:
div {
position: fixed;
z-index: 100;
top: 100px;
left: 100px;
}
The values of z-index, top and left are dummy values. Change em with your ones.
UPDATE:
Since CSS Solution won't work for you, here is a working example writter in JS: http://jsfiddle.net/qCtt5/

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