I need to disable window scrolling when I mouseover a specific div and enable it on mouseout. But it's necessary to keep scrollbars, so overflow: hidden will not help.
I wrote a bit of JS, but it's to buggy in IE9 and Opera.
var win_scrolltop, is_mydiv_mouseovered = false;
$('#mydiv').hover(
function(){
win_scrolltop = $(window).scrollTop();
is_mydiv_mouseovered = true;
},
function() {
is_mydiv_mouseovered = false;
}
)
$(window).scroll(function() {
if (is_mydiv_mouseovered) $(window).scrollTop(win_scrolltop);
});
I found this answer, fiddled a little and result is this:
var scrollThing = {
// 33: PageUp, 34: PageDown, 35: End, 36: Home, 37: Left, 38: Up, 39: Right, 40: Down
keys: [33, 34, 35, 36, 37, 38, 39, 40],
preventDefault: function(e) {
e = e || window.event;
if (e.preventDefault) {
e.preventDefault();
}
e.returnValue = false;
},
keydown: function(e) {
for (var i = scrollThing.keys.length; i--;) {
if (e.keyCode === scrollThing.keys[i]) {
scrollThing.preventDefault(e);
return;
}
}
},
disable: function() {
if (window.addEventListener) {
window.addEventListener('DOMMouseScroll', scrollThing.preventDefault, false);
}
window.onmousewheel = document.onmousewheel = scrollThing.preventDefault;
document.onkeydown = scrollThing.keydown;
},
enable: function() {
if (window.removeEventListener) {
window.removeEventListener('DOMMouseScroll', scrollThing.preventDefault, false);
}
window.onmousewheel = document.onmousewheel = document.onkeydown = null;
}
}
$('#mydiv').hover(scrollThing.disable, scrollThing.enable);
Working example.
Related
I have disabled window scroll for the page but i want to enable scroll for specific div block. Now i can able to disable and enable the scroll & mouse wheel, it is working fine. but i want to enable scroll in specific div block. please tell where i made mistake.
The code
var $window = $(window), previousScrollTop = 0, scrollLock = false;
$window.scroll(function(event) {
if(scrollLock) {
$window.scrollTop(previousScrollTop);
}
previousScrollTop = $window.scrollTop();
});
$("#template").click(function() {
scrollLock = true;
disableScroll();
});
$("#close, .clear").click(function() {
enableScroll();
scrollLock = false;
});
// left: 37, up: 38, right: 39, down: 40,
// spacebar: 32, pageup: 33, pagedown: 34, end: 35, home: 36
var keys = {37: 1, 38: 1, 39: 1, 40: 1};
function preventDefault(e) {
e = e || window.event;
if (e.preventDefault)
e.preventDefault();
e.returnValue = false;
}
function preventDefaultForScrollKeys(e) {
if (keys[e.keyCode]) {
preventDefault(e);
return false;
}
}
function disableScroll() {
if (window.addEventListener)
window.addEventListener('DOMMouseScroll', preventDefault, false);
window.onwheel = preventDefault;
window.onmousewheel = document.onmousewheel = preventDefault;
window.ontouchmove = preventDefault;
document.onkeydown = preventDefaultForScrollKeys;
}
function enableScroll() {
if (window.removeEventListener)
window.removeEventListener('DOMMouseScroll', preventDefault,
false);
window.onmousewheel = document.onmousewheel = null;
window.onwheel = null;
window.ontouchmove = null;
document.onkeydown = null;
}
// enabling scroll for specific div block
$('.slide').on('scroll mousewheel touchmove', function(e) {
e.preventDefault();
enableScroll();
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="test">Some text......</div>
<div class="slide">I want to enable scroll for this block only</div>
Thanks advance
For only vertical scroll:
<div style="overflow-y: scroll">
For only horizontal scroll:
<div style="overflow-x: scroll">
For both:
<div style="overflow: scroll">
To hide the scroll bar:
use hidden value for overflow attribute.
You can do it using css
.test{
overflow: hidden;
}
.slide{
height: 20px;
overflow: auto;
}
var $window = $(window), previousScrollTop = 0, scrollLock = false;
$window.scroll(function(event) {
if(scrollLock) {
$window.scrollTop(previousScrollTop);
}
previousScrollTop = $window.scrollTop();
});
$("#template").click(function() {
scrollLock = true;
disableScroll();
});
$("#close, .clear").click(function() {
enableScroll();
scrollLock = false;
});
// left: 37, up: 38, right: 39, down: 40,
// spacebar: 32, pageup: 33, pagedown: 34, end: 35, home: 36
var keys = {37: 1, 38: 1, 39: 1, 40: 1};
function preventDefault(e) {
e = e || window.event;
if (e.preventDefault)
e.preventDefault();
e.returnValue = false;
}
function preventDefaultForScrollKeys(e) {
if (keys[e.keyCode]) {
preventDefault(e);
return false;
}
}
function disableScroll() {
if (window.addEventListener)
window.addEventListener('DOMMouseScroll', preventDefault, false);
window.onwheel = preventDefault;
window.onmousewheel = document.onmousewheel = preventDefault;
window.ontouchmove = preventDefault;
document.onkeydown = preventDefaultForScrollKeys;
}
function enableScroll() {
if (window.removeEventListener)
window.removeEventListener('DOMMouseScroll', preventDefault,
false);
window.onmousewheel = document.onmousewheel = null;
window.onwheel = null;
window.ontouchmove = null;
document.onkeydown = null;
}
// enabling scroll for specific div block
$('.slide').on('scroll mousewheel touchmove', function(e) {
e.preventDefault();
enableScroll();
});
.test{
overflow: hidden;
}
.slide{
height: 18px;
overflow: auto;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="template">Disable</div>
<div class="test">Some text......</div>
<div class="slide">I want to enable scroll for this block only <br>I want to enable scroll for this block only<br>I want to enable scroll for this block only </div>
so I want to implement a full page transition scroll with jQuery. I know that there are plugins for this, but I need a custom code in my case.
//new script
<script>
$(document).ready(function(){
// http://stackoverflow.com/questions/4770025/how-to-disable-scrolling-temporarily
// left: 37, up: 38, right: 39, down: 40,
// spacebar: 32, pageup: 33, pagedown: 34, end: 35, home: 36
var keys = {37: 1, 38: 1, 39: 1, 40: 1};
function preventDefault(e) {
e = e || window.event;
if (e.preventDefault)
e.preventDefault();
e.returnValue = false;
}
function preventDefaultForScrollKeys(e) {
if (keys[e.keyCode]) {
preventDefault(e);
return false;
}
}
function disableScroll() {
if (window.addEventListener) // older FF
window.addEventListener('DOMMouseScroll', preventDefault, false);
window.onwheel = preventDefault; // modern standard
window.onmousewheel = document.onmousewheel = preventDefault; // older browsers, IE
window.ontouchmove = preventDefault; // mobile
document.onkeydown = preventDefaultForScrollKeys;
}
function enableScroll() {
if (window.removeEventListener)
window.removeEventListener('DOMMouseScroll', preventDefault, false);
window.onmousewheel = document.onmousewheel = null;
window.onwheel = null;
window.ontouchmove = null;
document.onkeydown = null;
}
/* $(window).scroll(function(){
}); */
var lastScrollTop = 0;
$(window).scroll(function(event){
var st = $(this).scrollTop();
if (st > lastScrollTop){
// downscroll code
console.log('down');
if (($(this).scrollTop() >940) && ($(this).scrollTop() <1000)){
disableScroll();
$('html, body').animate({ scrollTop: $(".bg1").offset().top}, 2000);
enableScroll();
}
if ($(this).scrollTop() >1548){
disableScroll();
$('html, body').animate({ scrollTop: $(".bg2").offset().top}, 2000);
enableScroll();
}
} else {
// upscroll code
console.log('up');
/* if ($(this).scrollTop() >1548){
disableScroll();
$('html, body').animate({ scrollTop: $(".bg").offset().top}, 2000);
enableScroll();
} */
}
lastScrollTop = st;
});
}); //document.ready
</script>
So this is my script. It checks whether the scroll is up or down, then starting on the specified pixels it starts transitioning. The beginning is happening very well.The first transition is happening. However after that no matter if I scroll up or down it always transits back to the position of bg1. If I scroll very intensely sometimes the scrolling to the bg2 happens. What is the problem of my code?
Here is a working code with comments in it and the sources I used.
//$(document).ready(function(){ //disables all the scrolling
// $('body,html').css('overflow', 'hidden');
// });
// http://stackoverflow.com/questions/4770025/how-to-disable-scrolling-temporarily
// left: 37, up: 38, right: 39, down: 40,
// spacebar: 32, pageup: 33, pagedown: 34, end: 35, home: 36
var keys = {37: 1, 38: 1, 39: 1, 40: 1};
function preventDefault(e) {
e = e || window.event;
if (e.preventDefault)
e.preventDefault();
e.returnValue = false;
}
function preventDefaultForScrollKeys(e) {
if (keys[e.keyCode]) {
preventDefault(e);
return false;
}
}
function disableScroll() {
if (window.addEventListener) // older FF
window.addEventListener('DOMMouseScroll', preventDefault, false);
window.onwheel = preventDefault; // modern standard
window.onmousewheel = document.onmousewheel = preventDefault; // older browsers, IE
window.ontouchmove = preventDefault; // mobile
document.onkeydown = preventDefaultForScrollKeys;
}
function enableScroll() {
if (window.removeEventListener)
window.removeEventListener('DOMMouseScroll', preventDefault, false);
window.onmousewheel = document.onmousewheel = null;
window.onwheel = null;
window.ontouchmove = null;
document.onkeydown = null;
}
//http://stackoverflow.com/questions/33838956/jquery-full-page-scroll-without-plugin
var currentLocation = 'firstPage';
// No need to set these inside the event listener since they are always the same.
var firstHeight = $('#firstPage').offset().top,
secondHeight = $('#secondPage').offset().top,
thirdHeight = $('#thirdPage').offset().top,
fourthHeight = $('#fourthPage').offset().top,
fifthHeight = $('#fifthPage').offset().top,
sixthHeight = $('#sixthPage').offset().top,
seventhHeight = $('#seventhPage').offset().top,
eightHeight = $('#eightPage').offset().top,
ninthHeight = $('#ninthPage').offset().top;
// Helper so we can check if the scroll is triggered by user or by animation.
var autoScrolling = false;
$(document).scroll(function(e){
var scrolled = $(window).scrollTop();
// Only check if the user scrolled
if (!autoScrolling) {
if (scrolled > 1 && currentLocation == 'firstPage') {
scrollPage(secondHeight, 'secondPage');
}
else if (scrolled > secondHeight + 1 && currentLocation == 'secondPage') {
scrollPage(thirdHeight, 'thirdPage');
}
else if (scrolled > thirdHeight + 1 && currentLocation == 'thirdPage') {
scrollPage(fourthHeight, 'fourthPage');
}
else if (scrolled > fourthHeight + 1 && currentLocation == 'fourthPage') {
scrollPage(fifthHeight, 'fifthPage');
}
else if (scrolled > fifthHeight + 1 && currentLocation == 'fifthPage') {
scrollPage(sixthHeight, 'sixthPage');
}
else if (scrolled > sixthHeight + 1 && currentLocation == 'sixthPage') {
scrollPage(seventhHeight, 'seventhPage');
}
else if (scrolled > seventhHeight + 1 && currentLocation == 'seventhPage') {
scrollPage(eightHeight, 'eightPage');
}
else if (scrolled > eightHeight + 1 && currentLocation == 'eightPage') {
scrollPage(ninthHeight, 'ninthPage');
}
else if (scrolled < ninthHeight - 1 && currentLocation == 'ninthPage') {
scrollPage(eightHeight, 'eightPage');
}
else if (scrolled < eightHeight - 1 && currentLocation == 'eightPage') {
scrollPage(seventhHeight, 'seventhPage');
}
else if (scrolled < seventhHeight - 1 && currentLocation == 'seventhPage') {
scrollPage(sixthHeight, 'sixthPage');
}
else if (scrolled < sixthHeight - 1 && currentLocation == 'sixthPage') {
scrollPage(fifthHeight, 'fifthPage');
}
else if (scrolled < fifthHeight - 1 && currentLocation == 'fifthPage') {
scrollPage(fourthHeight, 'fourthPage');
}
else if (scrolled < fourthHeight - 1 && currentLocation == 'fourthPage') {
scrollPage(thirdHeight, 'thirdPage');
}
else if (scrolled < thirdHeight - 1 && currentLocation == 'thirdPage') {
scrollPage(secondHeight, 'secondPage');
}
else if (scrolled < secondHeight - 1 && currentLocation == 'secondPage') {
scrollPage(firstHeight, 'firstPage');
}
}//autoScrolling IF
// Since they all have the same animation, you can avoid repetition
function scrollPage(nextHeight, page) {
currentLocation = page;
// At this point, the page will start scrolling by the animation
// So we switch this var so the listener does not trigger all the if/else
autoScrolling = true;
disableScroll();
$('body,html').animate({scrollTop:nextHeight}, 500, function () {
// Once the animation is over, we can reset the helper.
// Now it is back to detecting user scroll.
autoScrolling = false;
enableScroll();
});
}
//$('h1').html(scrolled);
//$('h1').append("/" + secondHeight);
//$('h1').append("/" + thirdHeight);
})//document.ready
iam trying to lock the scroll bar with the current position when mouse down event and also need to unlock when mouse up event
$('#table td').on('mousedown', function(){
$('#container').scrollLeft(0);
});
var keys = {37: 1, 38: 1, 39: 1, 40: 1};
function preventDefault(e) {
e = e || window.event;
if (e.preventDefault)
e.preventDefault();
e.returnValue = false;
}
function preventDefaultForScrollKeys(e) {
if (keys[e.keyCode]) {
preventDefault(e);
return false;
}
}
function disableScroll() {
if (window.addEventListener) // older FF
window.addEventListener('DOMMouseScroll', preventDefault, false);
window.onwheel = preventDefault; // modern standard
window.onmousewheel = document.onmousewheel = preventDefault; // older browsers, IE
window.ontouchmove = preventDefault; // mobile
document.onkeydown = preventDefaultForScrollKeys;
}
function enableScroll() {
if (window.removeEventListener)
window.removeEventListener('DOMMouseScroll', preventDefault, false);
window.onmousewheel = document.onmousewheel = null;
window.onwheel = null;
window.ontouchmove = null;
document.onkeydown = null;
}
$(document).ready( function(){
$('#table td').on('mousedown', function(){
disableScroll();
});
$('#table td').on('mouseup', function(){
enableScroll();
});
});
check this solution
based on this question
hope this helps
I have already found the solution in the accepted answer here:
How to prevent page scrolling when scrolling a DIV element?
But want also to disable scrolling the main page on keys (when div content can't be scrollable anymore).
I'm trying to make something like this but it's not working:
$( '.div-scroll' ).bind( 'keydown mousewheel DOMMouseScroll', function ( e ) {
var e0 = e.originalEvent,
delta = e0.wheelDelta || -e0.detail;
this.scrollTop += ( delta < 0 ? 1 : -1 ) * 30;
if([32, 37, 38, 39, 40].indexOf(e.keyCode) > -1) {
e.preventDefault();
}
e.preventDefault();
});
Any ideas why?
You can stop the scrolling of the whole page by doing:
Method 1
<div onmouseover="document.body.style.overflow='hidden';" onmouseout="document.body.style.overflow='auto';"></div>
but it makes the browser's scrollbar disappear whenever you hover over the div.
Method 2
Else you can look at jquery-mousewheel.
var toolbox = $('#toolbox'),
height = toolbox.height(),
scrollHeight = toolbox.get(0).scrollHeight;
toolbox.off("mousewheel").on("mousewheel", function (event) {
var blockScrolling = this.scrollTop === scrollHeight - height && event.deltaY < 0 || this.scrollTop === 0 && event.deltaY > 0;
return !blockScrolling;
});
DEMO
Method 3
To stop the propagation with no plugins.
HTML
<div class="Scrollable">
<!-- A bunch of HTML here which will create scrolling -->
</div>
JS
$('.Scrollable').on('DOMMouseScroll mousewheel', function(ev) {
var $this = $(this),
scrollTop = this.scrollTop,
scrollHeight = this.scrollHeight,
height = $this.height(),
delta = (ev.type == 'DOMMouseScroll' ?
ev.originalEvent.detail * -40 :
ev.originalEvent.wheelDelta),
up = delta > 0;
var prevent = function() {
ev.stopPropagation();
ev.preventDefault();
ev.returnValue = false;
return false;
}
if (!up && -delta > scrollHeight - height - scrollTop) {
// Scrolling down, but this will take us past the bottom.
$this.scrollTop(scrollHeight);
return prevent();
} else if (up && delta > scrollTop) {
// Scrolling up, but this will take us past the top.
$this.scrollTop(0);
return prevent();
}
});
Method 4
you can do it by canceling these interaction events:
Mouse & Touch scroll and Buttons associated with scrolling.
// left: 37, up: 38, right: 39, down: 40,
// spacebar: 32, pageup: 33, pagedown: 34, end: 35, home: 36
var keys = {37: 1, 38: 1, 39: 1, 40: 1};
function preventDefault(e) {
e = e || window.event;
if (e.preventDefault)
e.preventDefault();
e.returnValue = false;
}
function preventDefaultForScrollKeys(e) {
if (keys[e.keyCode]) {
preventDefault(e);
return false;
}
}
function disableScroll() {
if (window.addEventListener) // older FF
window.addEventListener('DOMMouseScroll', preventDefault, false);
window.onwheel = preventDefault; // modern standard
window.onmousewheel = document.onmousewheel = preventDefault; // older browsers, IE
window.ontouchmove = preventDefault; // mobile
document.onkeydown = preventDefaultForScrollKeys;
}
function enableScroll() {
if (window.removeEventListener)
window.removeEventListener('DOMMouseScroll', preventDefault, false);
window.onmousewheel = document.onmousewheel = null;
window.onwheel = null;
window.ontouchmove = null;
document.onkeydown = null;
}
You need to bind document to 'keydown' event like this:
$( document ).bind( 'keydown', function (e) { ... e.preventDefault(); }
This code block the scrolling by using keys:
$(document).keydown(function(e) {
if (e.keyCode === 32 || e.keyCode === 37 || e.keyCode === 38 || e.keyCode === 39 || e.keyCode === 40) {
return false;
}
});
i'm trying to do a simple think in Fullcalendar ( 1.6.2 ) and is to simulate the prev and next button throught the mouse wheel up and down, similar to google calendar.
Here is the code i'm using, this code is from another question in here i think, but i can´t remember wich one :S
calendar.bind('mousewheel', function(event, delta) {
var view = calendar.fullCalendar('getView');
//alert(view.name); //Can retrieve the view name successfully
//alert(delta); // Undefined
//alert(event); // [Object object]
if (view.name == "month") {
if (delta > 0) {
alert(delta);
calendar.fullCalendar('prev');
}
if (delta < 0) {
alert(delta);
calendar.fullCalendar('next');
}
return false;
}
});
The problem is delta is Undefined
Anyone have a clue what i'm doing wrong? I'm very new to Jquery or Javascript
EDIT
var mousewheelevt=(/Firefox/i.test(navigator.userAgent))? "DOMMouseScroll" : "mousewheel";
// left: 37, up: 38, right: 39, down: 40,
// spacebar: 32, pageup: 33, pagedown: 34, end: 35, home: 36
var keys = [37, 38, 39, 40];
function preventDefault(e) {
e = e || window.event;
if (e.preventDefault)
e.preventDefault();
e.returnValue = false;
}
function keydown(e)
{
for (var i = keys.length; i--;) {
if (e.keyCode === keys[i]) {
preventDefault(e);
return;
}
}
}
function wheel(e) {
preventDefault(e);
}
function disable_scroll()
{
if (window.addEventListener) {
window.addEventListener('DOMMouseScroll', wheel, false);
}
window.onmousewheel = document.onmousewheel = wheel;
document.onkeydown = keydown;
}
function enable_scroll()
{
if (window.removeEventListener) {
window.removeEventListener('DOMMouseScroll', wheel, false);
}
window.onmousewheel = document.onmousewheel = document.onkeydown = null;
}
calendar.bind(mousewheelevt, function(e)
{
var evt=window.event || e;
var delta=evt.detail ? evt.detail*(-120) : evt.wheelDelta;
if(delta > 0){
calendar.fullCalendar('next');
}
if(delta < 0){
calendar.fullCalendar('prev');
}
});
calendar.bind("mouseleave", function()
{
enable_scroll();
});
calendar.bind("mouseenter", function()
{
disable_scroll();
});
Most of this code was copied from the net i have just adapt it to my problem.
This works in Chrome ( latest version ) and I.E ( lastest version )
Doesn´t work in Firefox ( lastest version )
Didn´t check in old versions of any of them.
Can anyone see the problem of not working in FF?
I think i got it, its a bit hacky but it does the trick!!! Any constructive critics are welcome. This is now working in IE, Firefox, Chrome recent versions.
//This checks the browser in use and populates da var accordingly with the browser
var mousewheelevt=(/Firefox/i.test(navigator.userAgent))? "DOMMouseScroll" : "mousewheel";
//Prevents the scroll event for the windows so you cant scroll the window
function preventDefault(e) {
e = e || window.event;
if (e.preventDefault)
e.preventDefault();
e.returnValue = false;
}
//I think this could be eliminated but in the examples i found used it
function wheel(e) {
preventDefault(e);
}
//adds the scroll event to the window
function disable_scroll(){
if (document.attachEvent) //if IE (and Opera depending on user setting)
document.attachEvent("on"+mousewheelevt, wheel);
else if (document.addEventListener) //WC3 browsers
document.addEventListener(mousewheelevt, wheel, false);
}
//removes the scroll event to the window
function enable_scroll()
{
if (document.removeEvent) //if IE (and Opera depending on user setting)
document.removeEvent("on"+mousewheelevt, wheel);
else if (document.removeEventListener) //WC3 browsers
document.removeEventListener(mousewheelevt, wheel, false);
}
//binds the scroll event to the calendar's DIV you have made
calendar.bind(mousewheelevt, function(e){
var evt = window.event || e; //window.event para Chrome e IE || 'e' para FF
var delta;
delta = evt.detail ? evt.detail*(-120) : evt.wheelDelta;
if(mousewheelevt === "DOMMouseScroll"){
delta = evt.originalEvent.detail ? evt.originalEvent.detail*(-120) : evt.wheelDelta;
}
if(delta > 0){
calendar.fullCalendar('next');
}
if(delta < 0){
calendar.fullCalendar('prev');
}
});
//hover event to disable or enable the window scroll
calendar.hover(
function(){
enable_scroll();
console.log("mouseEnter");
},
function(){
disable_scroll();
console.log("mouseLeave");
}
);
//binds to the calendar's div the mouseleave event
calendar.bind("mouseleave", function()
{
enable_scroll();
});
//binds to the calendar's div the mouseenter event
calendar.bind("mouseenter", function()
{
disable_scroll();
});