i am trying to fix the button on top when we scroll the window ,as soon as the button reach on the top then to be fixed, please need your help, i am using javascript code for this or if you have suitable code related to javascript or jquery then please suggest me,
i am showing a snapshot that clear you that what i want to do in this images,
image is here please click to see clearly my problem
This is my button code
HELPLINE NUMBER
and
This is javascript code what i have tried:
<script>
window.onscroll= function(){ myfunc(); }
var location_v=document.getElementById("NUMBER");
var pixtop=location_v.offsetTop;
function myfunc()
{
if(window.pageYOffset >= pixtop )
{
//var a=document.getElementById('NUMBER');
location_v.classList.add('stick');
}
else
{
a.classList.remove('stick');
}
}
</script>
and the css code is below:
.stick {
position:fixed;
top: 10px;
width: 100%;
}
and please also don't forget to tell me what i am missing, if you have any conceptual javascript or jquery code...
Here is a script that can do the trick for you:
$(document).ready(function() {
$(window).scroll(function () {
if ($(window).scrollTop() > 90) {
$('#NUMBER').addClass('stick');
}
if ($(window).scrollTop() < 91) {
$('#NUMBER').removeClass('stick');
}
});
});
And what it does is on each scroll event it checks the scrolling position from top of a window and using if check it either adds or removes your pre-made stick class. But of course you have to chose your own numbers in this if check.
I have also played around with a code snippet, so you can see how it works
$(document).ready(function() {
$(window).scroll(function () {
if ($(window).scrollTop() > 10) {
$('#NUMBER').addClass('stick');
}
if ($(window).scrollTop() < 11) {
$('#NUMBER').removeClass('stick');
}
});
});
body {
height: 600px;
}
.stick {
position: fixed;
top: 0;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button id="NUMBER">Press me</button>
Related
I looked at other threads, and their mistakes had to do with typos, I'm not sure where I'm going wrong.
I don't see the scroll button at all. It works when I call the function showScroll() from the body of my html using <body onscroll="showScrol()"> but that doesn't work in IE so I'm trying to use this function but it's not working:
// SCROLL TO TOP
$(document).ready(function() {
$(window).scroll(showScroll());
function showScroll() {
if ($(window).scrollTop() > 50) {
$("#top-btn").show();
} else {
$("#top-btn").hide();
}
}
function scrollToTop() {
$(window).scrollTop(0);
}
});
$(window).scroll(showScroll()); means you're executing the function instantly and the return value is being passed into the scroll event.
Instead make it $(window).scroll(showScroll); so it's the function that is passed in.
I created an example for you to illustrate. I guessed the html a bit but you get the point. Start scrolling the below example and see the div appear and disappear.
// SCROLL TO TOP
$(document).ready(function() {
$(window).scroll(showScroll); // <-- this was changed
function showScroll() {
if ($(window).scrollTop() > 50) {
$("#top-btn").show();
} else {
$("#top-btn").hide();
}
}
function scrollToTop() {
$(window).scrollTop(0);
}
const button = document.querySelector('button'); // <-- added this for completeness
button.addEventListener('click', scrollToTop);
});
main {
height: 600px;
}
#top-btn {
position: fixed;
display: none;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<main>
<button id="top-btn">Show me</button>
</main>
I'm trying to trigger a function when the mouse wheel is spun, however the div is the height of the window, therefor isn't scrollable and isn't triggering my function. This is the code I am using to test if it works;
jQuery(document).ready(function($) {
$( document ).scroll(function () {
console.log('it works!');
});
});
You can see the full fiddle here; https://jsfiddle.net/8wr8p4ub/1/
If I change the height to an exact value, it triggers, however how can I achieve this when the element isn't scrollable?
You have to check with mousewheel event here and not document scroll. Since in your case document is not scrolling.
$(window).bind('mousewheel DOMMouseScroll', function(event){
if (event.originalEvent.wheelDelta > 0 || event.originalEvent.detail < 0) {
// scroll up
console.log("scroll up");
}
else {
// scroll down
console.log("scroll down");
}
});
* {
padding: 0;
margin: 0;
}
.hi {
height: 100vh; // Change to 1200px and see the output in the console.
width: auto;
background: #222;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="hi"></div>
You don't need to bother yourself about the scroll once the page content is not so long to bring it out. But from what i saw there, your code is fine, and it will work whenever the content exceeds the minimum page scroll
Better still, you can make use of the mousewheel event in JS
You need to use mousewheel event handler:
$('div').on('mousewheel', function(event){
if(event.originalEvent.wheelDelta / 120 > 0) {
console.log('scrolled up');
} else {
console.log('scrolled down');
}
});
I'm having an issue with this jQuery that is blowing my mind. I've tried three different JS and jQuery functions people suggested online for accomplishing this and can't seem to get anything to work.
I'm trying to hide the class .arrow-up when .first is actually visible on the screen and hide the class .arrow-down when .last is visible on the screen.
Sounds simple enough, right?
Well the parent element has overflow: hidden on it (like most carousels–they really are from hell). Anyone know how to do this? I'd really appreciate any help, JS really isn't my strongest by any means...
Here's my current jQuery–
jQuery(document).ready(function ($) {
$(".arrow-down").bind("click", function (event) {
event.preventDefault();
$(".vid-list-container").stop().animate({
scrollTop: "+=300"
}, 300);
});
$(".arrow-up").bind("click", function (event) {
event.preventDefault();
$(".vid-list-container").stop().animate({
scrollTop: "-=300"
}, 300);
});
});
In this, .vid-list-container is the parent with overflow: hidden on it and .first and .last are both inside the container. The arrow classes are both outside of the container.
Built this pen for anyone who wants to play around with it.
http://codepen.io/seancrater/pen/waPNEW
Thanks!
This should work. Notice however that I used opacity:0, so the arrow can still be clicked. You need to change that!
function checkDownArrow() {
setTimeout(function() {
if($(".vid-list-container").scrollTop() != 0){
$('.arrow-up').css('opacity',1);
}
if(($(".vid-list-container").scrollTop() + $(".vid-item").height()+5) >= $(".vid-item").length * $(".vid-item").height()) {
$('.arrow-down').css('opacity',0);
}
},350);
}
function checkUpArrow() {
setTimeout(function() {
if($(".vid-list-container").scrollTop() == 0){
$('.arrow-up').css('opacity',0);
}
if(($(".vid-list-container").scrollTop() + $(".vid-item").height()+5) < $(".vid-item").length * $(".vid-item").height()) {
$('.arrow-down').css('opacity',1);
}
},350);
}
checkDownArrow();
checkUpArrow();
jQuery(document).ready(function ($) {
$(".arrow-down").bind("click", function (event) {
event.preventDefault();
$(".vid-list-container").stop().animate({
scrollTop: "+=173"
}, 300);
checkDownArrow();
});
$(".arrow-up").bind("click", function (event) {
event.preventDefault();
$(".vid-list-container").stop().animate({
scrollTop: "-=173"
}, 300);
checkUpArrow();
});
});
EDIT
Okay, I see you have a different problem... may I suggest using a different approach? Something like this.
HTML:
<div class="outer-wrapper">
<div class="inner-wrapper">
<div class="vid-item">
...
</div>
<div class="vid-item">
...
</div>
</div>
</div>
CSS:
.outer-wrapper {width:200px; height:150px; overflow:hidden;}
.inner-wrapper {height:auto; margin-top:0;}
.vid-item {width:200px; height:150px;}
JS:
var itemHeight = $('.vid-item').first().height();
var wrapperHeight = $('.inner-container').height();
$(".arrow-down").bind("click", function (event) {
event.preventDefault();
var margin = parseInt($('.inner-container').css('margin-top'));
if(itemHeight - margin > wrapperHeight) {
$('.inner-container').css('margin-top', (itemHeight-wrapperHeight) + 'px');
$('.arrow-down').addClass('hidden');
}
else {
$('.inner-container').css('margin-top', (margin-itemHeight) + 'px');
}
$('.arrow-up').removeClass('hidden');
});
$(".arrow-up").bind("click", function (event) {
event.preventDefault();
var margin = parseInt($('.inner-container').css('margin-top'));
if(margin + itemHeight >= 0) {
$('.inner-container').css('margin-top', '0');
$('.arrow-up').addClass('hidden');
}
else {
$('.inner-container').css('margin-top', (margin+itemHeight) + 'px');
}
$('.arrow-down').removeClass('hidden');
});
I am trying to achieve the "back to top" feature on a page through simple jquery. The "BACK TO TOP" button appears/disappears as expected.
When it appears if I click on it, I expect it to go to the top of the page, instead nothing happens. I am not sure what's going wrong.
Here's the code:
css:
#btoTop {
padding: 15px 10px;
background: #1f242a;
color: #fff;
position: fixed;
bottom: 0;
right: 15px;
display: none;
cursor:pointer;
cursor:hand;
width:130px;
height:40px;
}
html:
<div id='btoTop'>BACK TO TOP</div>
js:
$(document).ready(function(){
$(window).scroll(function(){
if($(window).scrollTop() > 0){
$("#btoTop").fadeIn("slow");
}
else {
$("#btoTop").fadeOut("slow");
}
});
$("#btoTop").click(function(event){
event.preventDefault();
$("html, body").animate({scrollTop:0 },"slow");
});
});
Note: If I call the click function inside the $(window).scroll(), I am able to click the button. But it flickers and doesn't work well with window resize.
$(document).ready(function(){
$(window).scroll(function(){
if($(window).scrollTop() > 0){
$("#btoTop").fadeIn("slow");
}
else {
$("#btoTop").fadeOut("slow");
}
$("#btoTop").click(function(event){
event.preventDefault();
$("html, body").animate({scrollTop:0 },"slow");
});
});
});
You're binding click on your button every single time you scroll, which is unnecessary. You should change it:
$(document).ready(function () {
$(window).scroll(function () {
if( $(window).scrollTop() > 0 ) {
$("#btoTop").fadeIn("slow");
} else {
$("#btoTop").fadeOut("slow");
}
});
// Bound a single time
$("#btoTop").click(function ( event ) {
event.preventDefault();
console.log("Clicked the button");
$("html, body").animate({scrollTop:0 },"slow");
});
});
This might not be the problem, but should be changed to avoid strange behaviours in your code.
I figured out the button was not yet available in the DOM when I was trying to click it.
Adding a timer on it worked pretty good. Hope this helps someone out there with similar issue...
$(document).ready(function(){
$(window).scroll(function(){
if($(window).scrollTop() > 0){
$("#btoTop").fadeIn("slow");
}
else {
$("#btoTop").fadeOut("slow");
}
});
$timeout( function() {
$("#btoTop").click(function(event){
event.preventDefault();
$("html, body").animate({scrollTop:0 },"slow");
});
}, 500);
});
So I'm building a website for a friend and I want it to scroll on href clicks, that is easy, I managed to do it with smooth animation. But the problem is, when I load the page and click on the FIRST link, scrolling is not precise, and after I click on anything after Test1 is pressed, its not precise again.
Since it's hard for me to explain, ill post jsfiddle link so you can test it.
$(document).ready(function() {
$('.click').click(function(e){
// prevent default action
e.preventDefault();
scrollToElement( $(this).attr('href'), 1000 );
});
var scrollToElement = function(el, ms){
var speed = (ms) ? ms : 600;
$('html,body').animate({
scrollTop: $(el).offset().top-102
}, speed);
}
});
Full code here: http://jsfiddle.net/pxmfs78k/
How to test my problem:
Press any link first time, and then you will see that the div is not positioned where I wanted it to be, and if you press the same link again, it will position itself correctly, and after that there are no problems in clicking until you reload or press test1 link, the first one.
So any idea what might cause the problem?
And I read this https://stackoverflow.com/questions/19750702/jquery-scrolling-issues-with-scrolltop thread and I couldn't fix my problem with the explanation given there.
It's because you're setting the nav to sticky, thus, removing it from the flow, and the whole content jumps up by 102px, to fix this, give the sticky class to the body instead of the nav and use padding to fight against it. http://jsfiddle.net/pxmfs78k/1/
CSS
body.sticky {
padding-top: 102px;
}
body.sticky .nav {
position: fixed;
width: 100%;
left: 0;
top: 0;
z-index: 100;
border-top: 0;
}
JS
$(document).ready(function () {
var stickyNavTop = $('.nav').offset().top;
var stickyNav = function () {
var scrollTop = $(window).scrollTop();
if (scrollTop > stickyNavTop) {
$('body').addClass('sticky');
} else {
$('body').removeClass('sticky');
}
};
stickyNav();
$(window).scroll(function () {
stickyNav();
});
});
$(document).ready(function () {
$('.click').click(function (e) {
// prevent default action
e.preventDefault();
scrollToElement($(this).attr('href'), 1000);
});
var scrollToElement = function (el, ms) {
var speed = (ms) ? ms : 600;
$('html,body').animate({
scrollTop: $(el).offset().top - 102
}, speed);
}
});