jquery scroll to the top of a div on click in android
Question
I have a different with overflow set to scroll and button that when clicked would scroll back to the top.
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-latest.js"></script>
<script src="http://code.jquery.com/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.10.4/jquery-ui.min.js"></script>
<meta charset="utf-8">
<style>
.pages{
position:absolute;
top:30px;
bottom:0px;
left:0px;
right:0px;
border:0;
overflow:scroll;
}
.pages div{
position:relative;
width:100%;
height:300px;
border:solid 1px #CDCDCD;
border-top-style:none;
border-left-style:none;
border-right-style:none;
}
</style>
<script>
$(document).ready(function(e) {
$('#new_pages').click(function(event){
event.preventDefault();
//add new page data
//scroll to top
$('#mag_pages').animate({
scrollTop:0
},900);
});
});
</script>
</head>
<body>
<div class="new_pages" id="new_pages">
<div id="count">10+</div>
<div id="text">New Pages</div>
</div>
<div class="pages" id="mag_pages">
<div>Page 1</div>
<div>Page 2</div>
<div>Page 3</div>
<div>Page 4</div>
<div>Page 5</div>
</div>
</body>
</html>
After some googling I'm still no further foreward. scrollTop:0 is all any post says. Whether animated or not doesn't work on for me. Is there another method to achieve this. The code works fine on a computer when when I test it on a mobile device the scroll function doesn't work. Do mobiles have to be targeted differently?
2 answers
solution1
0 2015-08-27 13:13:32
Maybe JQuery scroll or animation functions have some problems in mobile devices.
Try using pure JS, instead JQuery:
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-latest.js"></script>
<script src="http://code.jquery.com/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.10.4/jquery-ui.min.js"></script>
<meta charset="utf-8">
<style>
.pages{
position:absolute;
top:30px;
bottom:0px;
left:0px;
right:0px;
border:0;
overflow:scroll;
}
.pages div{
position:relative;
width:100%;
height:300px;
border:solid 1px #CDCDCD;
border-top-style:none;
border-left-style:none;
border-right-style:none;
}
</style>
<script>
function newPagesClicked(){
//add new page data
//scroll to top
scrollToTop
}
function scrollToTop(scrollDuration) {
var scrollStep = -window.scrollY / (scrollDuration / 15),
scrollInterval = setInterval(function(){
if ( window.scrollY != 0 ) {
window.scrollBy( 0, scrollStep );
}
else clearInterval(scrollInterval);
},15);
}
</script>
</head>
<body>
<div class="new_pages" onclick="newPagesClicked()" id="new_pages">
<div id="count">10+</div>
<div id="text">New Pages</div>
</div>
<div class="pages" id="mag_pages">
<div>Page 1</div>
<div>Page 2</div>
<div>Page 3</div>
<div>Page 4</div>
<div>Page 5</div>
</div>
</body>
</html>
solution2
-1 2014-04-13 17:13:41
I used code like this in one of my projects and it works, try to modify your code like below:
$(document).ready(function(e) {
$('#new_pages').click(function(event){
event.preventDefault();
//add new page data
//scroll to top
$('html, body').animate({
scrollTop:$('#mag_pages').offset().top
},900);
});
});
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