I have a trouble with IOS device such an Iphone. When i focus input(its inside fixed div) virtual keyboard display. However it's scroll whole viewport and position fixed div scrolls too. How to solve this ?
I've been researching many posts and forums
Research 1
Research 2
What i want to:
Position fixed div must stay at top
Prevent scrolling whole site when virtual keyboard appears
Allow scroll on search-result div
My html:
<div class="header">
<button type="button" id="searchButton">Search</button>
<div class="search"><!-- Its not visible until user click on search button -->
<input type="text" id="search" placeholder="Search here"/>
</div>
</div>
Here is my html and when i type something it suggests me some result based on my
keyword. And result will be appended into DOM.
<div class="search-result"><!-- Appended via javascript -->
<ul class="suggest-list">
<li>Some item of search result</li>
</ul>
</div>
And the javascript:
$(document).on("click", "#searchButton", function(e){
var field = $("#search"); // Gets the search input
field.focus(); // Focus the input for virtual keyboard shows up
});
/* cache dom references */
var $body = jQuery('body');
/* bind events */
$(document).on('focus', 'input', function() {
$body.addClass('fix');
})
.on('blur', 'input', function() {
$body.removeClass('fix');
});
And the sass file:
.header {
position: fixed;
height: 50px;
background: #dadce7;
input {
height: 100%;
width: 100%;
border: 0;
}
}
/* Style of search result */
.search-result {
position: fixed;
top: 50px;
bottom: 0;
width: 100%;
overflow-y: scroll;
}
/* Fix the layout */
body {
&.fix {
overflow: hidden;
position: fixed; // overflow will be work;
width: 100%;
height: 100%;
}
}
This worked for me in react native to scroll the scrollView to a certain point. I don't know if this will help, but I hope it does.
//use this to scroll to the location (Maybe you could constantly set it to the same place to lock it)
this.refs._scrollView.scrollTo({x: 0, y: 0, animated: true});
//then put this in the scrollView
<ScrollView ref='_scrollView'/>
Related
I am building a react app.
I want to show a popup window in the center of screen in which user can give review to the product.
While showing that window how to prevent scrolling of background and disable all background such that if user clicks outside of that window(even on a button) only that window should disappear?
I want to do something like this:
I have not idea about how it is done.
Please suggest just some way of doing that or suggest some topics which can be used here.
To prevent background, pop a black div that overides entire window.
width: 100vw;
height: 100vh;
position: fixed;
z-index: 99;
in that div, place another div with your content to be displayed.
Here is a working example:
let myEl = document.getElementById("hideScreen")
//myEl.style.display = "block";
addEventListener("click", () => {
myEl.style.display = "block";
})
#hideScreen {
top:0; left: 0;
width: 100%;
height: 100%;
position: fixed;
background: rgba(50,50,50,0.9);
display: none;
}
input {
margin: 50vmin;
}
<body>
Some text to be vanished.
Click to activate.
<div id="hideScreen">
<input type="text" id="userReview" placeHolder="your review"></input>
</div>
</body>
I have a div "wtb_wrapper_middle" in middle of my web page.
For that div only scroll able in web page. In left and right div are not movable, it fixed in my web page.
So I want to mouse always focus on that particular div wherever my mouse clicked or mouse hover. Means when i use keyboard up or down button at that time that particular div only should be scroll.
Is there possible in JQuery.
My code is like below.
<div id="wtb_wrapper_inner">
<div id="wrapper_left">
....
....
....
</div>
<div id="wtb_wrapper_middle">
....
....
....
....
</div>
<div id="wtb_wrapper_right">
....
....
....
</div>
</div>
In from above html code "wtb_wrapper_middle" area only scrolls in my web page.
I have tried the below
window.onload = function() {
document.getElementById("wtb_wrapper_middle_inner").focus();
};
In this code is focus only on page load, but if clicked mouse in somewhere else, at that time also that middle area should be scroll. That is not working.
My Ajax callback function like below
$.ajax({
type: "POST",
url: "search.php?ajaxrequest=yes",
data: query_string
}).done(function( data ) {
$(".wtb_p_loader").remove();
$("#wtb_wm_listing").append(data);
});
I'm appending return success data into the di wtb_wm_listing which is i have placed inside of main div wtb_wrapper_middle
Anyone help me to make it success..
You can do this using css position: fixed;
The two outer divs are fixed to the screen regardless of scroll position. Then the central div scrolls regardless of where the mouse pointer is. You can use top and bottom to fix the full height of the screen, then left and right to fix each on either side.
You can still interact with content in the fixed outer divs.
And the Html is
<div class='left'>
<a href='#'>Hover to check the mouse focus and scorll</a>
</div>
<div class='center'>
//some long content
</div>
<div class='right'>
</div>
Css for doing this action.
a {
color: #000;
display: block;
font-family: arial;
margin: 10px;
text-decoration: none;
}
a:hover {
background-color: #f03055;
color: #fafafa;
}
p {
color: #fafafa;
font-family: arial;
line-height: 24px;
margin: 0 0 25px 0;
padding: 0 2%;
}
.center {
background-color: #97c;
height: 2000px;
margin: 0 25%;
width: 50%%;
}
.left {
background-color: #7c9;
bottom: 0;
left: 0;
position: fixed;
top: 0;
width: 25%;
}
.right {
background-color: #7c9;
bottom: 0;
position: fixed;
right: 0;
top: 0;
width: 25%;
}
EDIT: to filter out input elements
document.body.onkeydown = function(event){
var e = event || window.event,
target = e.target || e.srcElement;
if (target.tagName.toUpperCase() == 'INPUT') return;
document.getElementById("wtb_wrapper_middle_inner").focus();
};
this will move focus to your middle div whenever keydown event occurs.
I need to make a scrollable div, scroll even if the mouse is upon the content (inside the scrollable div), and not just beside it (Where it is blank). This is what I have so far:
var main = document.getElementById('main-site');
var maxTop = main.parentNode.scrollHeight-main.offsetHeight;
main.parentNode.parentNode.onscroll = function() {
main.style.top = Math.min(this.scrollTop,maxTop) + "px";
}
In Chrome is ok
In IE8+ is ok (i know a hack)
In Safari the content shakes a lot when i scroll, can i fix that? (I want fix this)
Working fiddle -> https://jsfiddle.net/8oj0sge4/6/
var main = document.getElementById('main-site');
var maxTop = main.parentNode.scrollHeight - main.offsetHeight;
main.parentNode.parentNode.onscroll = function() {
main.style.top = Math.min(this.scrollTop, maxTop) + "px";
}
#wrapper {
width: 100%;
height: 1500px;
border: 1px solid red;
padding-top: 380px;
}
#wrapper .container {
border: 1px solid green;
width: 100%;
height: 500px;
overflow: scroll;
}
#wrapper .container-scroll {
height: 1500px;
width: 100%;
border: 1px solid yellow;
position: relative;
}
#wrapper .main {
width: 200px;
height: 500px;
background: black;
overflow: scroll;
position: absolute;
color: white;
left: 50%;
margin-left: -100px;
margin-top: 10px;
}
<div id="wrapper">
<div class="container">
<div class="container-scroll">
<div id="main-site" class="main">
My goals is to make the div container scroll also when the mouse is hover this div in safari, in Google and IE8 i already know how to make work, but safari is shaking a lot!
</div>
</div>
</div>
</div>
Thank you guys.
I hope this demo helps you out to make the div content scroll when mouse hover and when mouse out of the div.
<html>
</head>
<style>
.mydiv
{height: 50px;width: 100px; overflow-y: scroll; }
</style>
<script>
function loadpage()
{ document.getElementById('marquee1').stop(); }
function marqueenow()
{ document.getElementById('marquee1').start(); }
</script>
</head>
<body onload="loadpage()">
<marquee id="marquee1" class="mydiv" onmouseover="marqueenow()" onmouseout="loadpage()" behavior="scroll" direction="up" scrollamount="10">
This is my test content This is my test content This is my test content This is my test content This is my test content This is my test content This is my test
content This is my test content This is my test content This is my test content This is my test content This is my test content This is my test content This is my test content This is my test content This is my test content
</marquee>
</body>
</html>
you just add this js file to get a smooth scrolling effect.
https://github.com/nathco/jQuery.scrollSpeed
live deomo
http://code.nath.co/scrollSpeed
Not 100% sure what you are up to but you can get the fixed position with css "fixed". It will stay where you put it. The following css fixes to the bottom of the page.
.fixed {
bottom: 0;
left: 0;
position: fixed;
right: 0;
top: auto;
}
There is already an answer on scroll position:
How to get scrollbar position with Javascript?
I don't know important is that content, and by this I mean if it needs to stay selectable.
If not a pretty good solution would be to use #wrapper .main{ pointer-events: none; }, meaning that the content will not get any events from mouse and it would go through it to the next element behind it - in your case the scroll would go dirrectly to #wrapper.
Safari does this because every browser has its own scrolling. If you have a fixed header on a phone it acts bouncy and if you do this on a PC it acts normal. Explorer scrolls smooth and Chrome scrolls right to the place without a smooth transition.
The reason why your #main-site is "jiggling" is because the browser keep "repaint" the position of this element.
One Trick to solve this is called Debounce Function, (you may also google it to see other variations.) The basic idea is to delay the scroll event handler to clear out those untriggered callbacks.
In your case, you may do something like this:
main.parentNode.parentNode.onscroll = function(event) {
debounce(offsetting, 10);
}
function offsetting() {
main.style.top = Math.min(main.parentNode.parentNode.scrollTop,maxTop) + "px";
}
function debounce(method, delay) {
clearTimeout(method._tId);
method._tId= setTimeout(function(){
method();
}, delay);
}
If you keep seeing the jiggling issue, you can simply edit the delay parameter (i.e, change 10 to 50). The downside for that is your #main-site element will be 'cut off the top` for a while, depending on your delay settings.
Since your code works perfectly on Chrome and IE, there might be a bug on scrollHeight or offsetHeight attribute on Safari. I recommend you to use getBoundingClientRect for calculating element position since this method is more reliable and accurate.
var maxTop = main.parentNode.getBoundingClientRect().height - main.getBoundingCLientRect().height;
How can I be able to scroll article while having my mouse cursor over .header while still having .header clickable? If I set z-index: -1 to .header I'm able to scroll while having the cursor over .header, but it's no longer clickable.
Demo
Fiddle
HTML:
<div class="row">
<div class="off-canvas-wrap">
<div class="inner-wrap">
<div class="header">
I should be clickable
</div>
<article class="small-12 columns">
<div style="height:5000px">
</div>
</article>
</div>
</div>
</div>
CSS:
article {
overflow-y: auto;
}
article,
body,
html,
.off-canvas-wrap,
.off-canvas-wrap .inner-wrap,
.row {
height: 100%;
width: 100%;
}
.header {
position: absolute;
width: 400px;
height: 400px;
background: #000;
left: 50%;
top: 50%;
margin-left: -200px;
margin-top: -200px;
z-index: 1;
color: #fff;
text-align: center;
padding-top: 1em;
}
If you want a CSS solution, there is none — this is because of how mouse events are directly related to the visibility of the item to the pointer/cursor: e.g. if you place .header in the back such that it is not accessible (so that scroll events on article can be triggered), it will not register a click event, too.
A JS-based solution would be listening to the mousewheel() event (with this plugin, available as a CDN-hosted plugin, too) and then manually triggering scrolling on the article element. However, this does not replicate the default scrolling behavior on individual OSes, and may appear choppy on OSes that has smoothed scrolling events (like OS X).
Without further ado:
// Cache article's position from top (might change if the page is loaded with a hash, so we cannot declare it as 0)
var fromTop = $('article').scrollTop();
$('.header').mousewheel(function(e,d) {
// Prevent default scrolling behavior, even when .header is overflowing
e.preventDefault();
// Trigger scroll in window
// You can change how much to amplify the 'd', which is the delta (distance registered from the scrollwheel). I have chosen it to multiply it by 10
fromTop = fromTop - d*10;
$(this).next('article').scrollTop(fromTop);
}).click(function() {
// Just testing
alert('Header is clicked on!');
});
Here is the proof-of-concept JSFiddle: http://jsfiddle.net/teddyrised/CK7z8/2/
Warning: In the event that there are multiple .header elements targeting multiple article elements on the same page, you will have to iterate through each .header-article pair and cache the fromTop separately for each pair.
I am working on javascript scroll. I have following html code
JSFIDDLE
<div class="wrapper">
<div class="red div current"></div>
<div class="blue div"></div>
<div class="green div"></div>
<div class="yellow div"></div>
</div>
In above code I have four div tags red, blue, green and yellow. All of them are position in following css.
html, body {
height: 100%;
}
.wrapper {
overflow: hidden;
height: 100%;
}
.div {
position: relative;
height: 100%;
}
.red {
background: red;
}
.blue {
background: blue;
}
.green {
background: green;
}
.yellow {
background: yellow;
}
In above html and css the red div tag is the current one which means user is seeing the red div tag on the screen. Now what I am trying to do is when user scroll over window once, then the next div tag i.e. blue will be animated and moved to the top and will become visible to the user whereas the red div tag will be behind the blue one. This same process goes for both green and yellow.
The problem is that when user scroll once then the div tag should animate however my current javascript code is keep reading the scroll and animating the div tags one after another. What I want is when user scroll once then scroll should be disabled until the blue div tag is animated. Then scroll should be enabled. Again when user scroll second time, the scroll should disable until the green div tag completes its animation. Same goes for yellow.
How can I achieve above?
Here is my javascript
$(window).on("scroll", function () {
var next = $('.current').next();
var height = next.outerHeight();
next.animate({top: '-=' + height}, 500, function () {
$(this).prev().removeClass('current');
$(this).addClass('current');
});
});
Please have a look on update JsFiddle
$(window).on("scroll", function () {
var next = $('.current').next();
var height = $('.current').outerHeight();
$('.current').prevAll().each(function(){
height += $(this).outerHeight();
});
next.animate({top: '-=' + height}, 500, function () {
$(this).prev().css('top','');
$(this).prev().toggleClass('current');
$(this).toggleClass('current');
});
});
The main reason your example wasn't working as expected is because you were relatively positioning the divs, and not moving them to the correct spot.
Working JSFiddle:
http://jsfiddle.net/seanjohnson08/rVVuc/6/
.wrapper {
overflow: hidden;
height: 100%;
position: relative;
}
.div {
position: absolute;
height: 100%;
width: 100%;
top: 100%;
}
.current{
top: 0;
}
If you are looking for a way to limit the amount of scroll events fired, try throttling: http://benalman.com/projects/jquery-throttle-debounce-plugin/. My solution doesn't require this, because no matter how many times it is firing the scroll event, it only ever tells jquery to animate to top:0, there's no chance of it animating past that.