I'm making a horizontal scroll on a div element using left and right buttons.
I initially achieved the same with refs.
onClickLeft = () => {
this.props.refELement.current.scrollLeft -= 300;
}
onClickRight = () => {
this.props.refElement.current.scrollLeft += 300;
}
But I can't seem to find a way to set animation duration to this.
Using jquery, this can be achieved as:
$('.swipeRight').click(function(){
$('.swipeBox').animate( { scrollLeft: '+=460' }, 1000);
});
$('.swipeLeft').click(function(){
$('.swipeBox').animate( { scrollLeft: '-=460' }, 1000);
});
But this code is not reproducable in reactjs.
I want to achieve this in reactjs basically.
Any help with this?
you can use this code
document.getElementById('left-button').onclick = function () {
scrollLeft(document.getElementById('content'), -300, 1000);
}
document.getElementById('right-button').onclick = function () {
scrollLeft(document.getElementById('content'), 300, 1000);
}
function scrollLeft(element, change, duration) {
var start = element.scrollLeft,
currentTime = 0,
increment = 20;
console.log(start)
var animateScroll = function(){
currentTime += increment;
var val = Math.easeInOutQuad(currentTime, start, change, duration);
element.scrollLeft = val;
if(currentTime < duration) {
setTimeout(animateScroll, increment);
}
};
animateScroll();
}
//t = current time
//b = start value
//c = change in value
//d = duration
Math.easeInOutQuad = function (t, b, c, d) {
t /= d/2;
if (t < 1) return c/2*t*t + b;
t--;
return -c/2 * (t*(t-2) - 1) + b;
};
.left{
float: left;
width: 30%;
height: 200px;
border: 1px solid black;
}
.internal{
width: 31.75%;
height: 100%;
border: 1px solid black;
display: inline-block;
}
.center{
float: left;
width: 38.9%;
height: 200px;
border: 1px solid black;
margin: 1px;
overflow: hidden;
/*will change this to hidden later to deny scolling to user*/
white-space: nowrap;
}
.right{
float: right;
width: 30%;
height: 200px;
border: 1px solid black;
}
<div class="left">
left div
<button id="left-button">
swipe left
</button>
</div>
<div class="center" id="content">
<div class=internal>
div 1
</div>
<div class=internal>
div 2
</div>
<div class=internal>
div 3
</div>
<div class=internal>
div 4
</div>
<div class=internal>
div 5
</div>
<div class=internal>
div 6
</div>
<div class=internal>
div 7
</div>
<div class=internal>
div 8
</div>
</div>
<div class="right">
<button id="right-button">
swipe right
</button>
right div
</div>
Based in this code