Over-spinning Flickity JS slider The 2019 Stack Overflow Developer Survey Results Are In
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Over-spinning Flickity JS slider
The 2019 Stack Overflow Developer Survey Results Are In
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
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$begingroup$
I got a bit of a strange JS issue that I could use help on if anyone has time…
Basically if you flick the slider just the wrong way then it'll spin infinitely rather than just settle on a slide and stop. It's a bit hard to get it to do that. I think it has something to do with spinning past the gap between the first/last slide, but I can't quite tell where the problem is.
Do you see anything wrong with the code that might be the cause of that behaviour?
Here’s a reduced case:
https://codepen.io/Julix/pen/xexawP
and proof that it still works:
https://www.youtube.com/watch?v=RQQwsAq5BQU
Here's the JS code from that reduced case:
// Flickity slider from external js: flickity.pkgd.js
// Prev- and next classes from external js: https://codepen.io/desandro/pen/wWQQwN.js
"use strict";
var $carousel = $('.carousel-main').flickity({
"wrapAround": true,
"draggable": true,
"prevNextButtons": false,
"pageDots": false
});
var $nav = $('.carousel-nav').flickity({
"on": {
ready: choseCenterSlide,
scroll: choseCenterSlide
},
"asNavFor": ".carousel-main",
"wrapAround": true,
"percentPosition": false,
"draggable": true,
"pageDots": false,
"prevNextButtons": false
});
;
var navDragging = false;
$nav.on('dragStart.flickity', function () {
return navDragging = true;
});
$nav.on('settle.flickity', function () {
return navDragging = false;
});
$nav.data('flickity').resize();
function choseCenterSlide() {
// check if this.x is within slideableWidth
var currentX = this.x > 0 ? -this.slideableWidth + this.x : this.x < -this.slideableWidth ? this.slideableWidth + this.x : this.x; // calculate closest slide
var distances = this.slides.map(function (slide) {
return -slide.target;
});
var closestDistance = distances.reduce(function (prev, curr) {
return Math.abs(curr - currentX) < Math.abs(prev - currentX) ? curr : prev;
});
var closestSlideIndex = distances.indexOf(closestDistance); // early return
if (closestSlideIndex == this.scrollSlideIndex) return; // register
if (this.scrollSlideIndex == null) this.scrollSlideIndex = this.selectedIndex; // change scrollSlide
this.slides[this.scrollSlideIndex].cells.forEach(function (cell) {
cell.element.classList.remove('is-closest');
});
this.slides[closestSlideIndex].cells.forEach(function (cell) {
cell.element.classList.add('is-closest');
}); // update state variable
this.scrollSlideIndex = closestSlideIndex; // update selectedSlide
if (navDragging) {
this.select(this.scrollSlideIndex);
if (this.navCompanion) {
this.navCompanion.select(this.scrollSlideIndex);
}
}
}
javascript
asked 2 mins ago
JulixJulix
1013
New contributor
Julix is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
I got a bit of a strange JS issue that I could use help on if anyone has time…
Basically if you flick the slider just the wrong way then it'll spin infinitely rather than just settle on a slide and stop. It's a bit hard to get it to do that. I think it has something to do with spinning past the gap between the first/last slide, but I can't quite tell where the problem is.
Do you see anything wrong with the code that might be the cause of that behaviour?
Here’s a reduced case:
https://codepen.io/Julix/pen/xexawP
and proof that it still works:
https://www.youtube.com/watch?v=RQQwsAq5BQU
Here's the JS code from that reduced case:
// Flickity slider from external js: flickity.pkgd.js
// Prev- and next classes from external js: https://codepen.io/desandro/pen/wWQQwN.js
"use strict";
var $carousel = $('.carousel-main').flickity({
"wrapAround": true,
"draggable": true,
"prevNextButtons": false,
"pageDots": false
});
var $nav = $('.carousel-nav').flickity({
"on": {
ready: choseCenterSlide,
scroll: choseCenterSlide
},
"asNavFor": ".carousel-main",
"wrapAround": true,
"percentPosition": false,
"draggable": true,
"pageDots": false,
"prevNextButtons": false
});
;
var navDragging = false;
$nav.on('dragStart.flickity', function () {
return navDragging = true;
});
$nav.on('settle.flickity', function () {
return navDragging = false;
});
$nav.data('flickity').resize();
function choseCenterSlide() {
// check if this.x is within slideableWidth
var currentX = this.x > 0 ? -this.slideableWidth + this.x : this.x < -this.slideableWidth ? this.slideableWidth + this.x : this.x; // calculate closest slide
var distances = this.slides.map(function (slide) {
return -slide.target;
});
var closestDistance = distances.reduce(function (prev, curr) {
return Math.abs(curr - currentX) < Math.abs(prev - currentX) ? curr : prev;
});
var closestSlideIndex = distances.indexOf(closestDistance); // early return
if (closestSlideIndex == this.scrollSlideIndex) return; // register
if (this.scrollSlideIndex == null) this.scrollSlideIndex = this.selectedIndex; // change scrollSlide
this.slides[this.scrollSlideIndex].cells.forEach(function (cell) {
cell.element.classList.remove('is-closest');
});
this.slides[closestSlideIndex].cells.forEach(function (cell) {
cell.element.classList.add('is-closest');
}); // update state variable
this.scrollSlideIndex = closestSlideIndex; // update selectedSlide
if (navDragging) {
this.select(this.scrollSlideIndex);
if (this.navCompanion) {
this.navCompanion.select(this.scrollSlideIndex);
}
}
}
javascript
asked 2 mins ago
JulixJulix
1013
New contributor
Julix is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
I got a bit of a strange JS issue that I could use help on if anyone has time…
Basically if you flick the slider just the wrong way then it'll spin infinitely rather than just settle on a slide and stop. It's a bit hard to get it to do that. I think it has something to do with spinning past the gap between the first/last slide, but I can't quite tell where the problem is.
Do you see anything wrong with the code that might be the cause of that behaviour?
Here’s a reduced case:
https://codepen.io/Julix/pen/xexawP
and proof that it still works:
https://www.youtube.com/watch?v=RQQwsAq5BQU
Here's the JS code from that reduced case:
// Flickity slider from external js: flickity.pkgd.js
// Prev- and next classes from external js: https://codepen.io/desandro/pen/wWQQwN.js
"use strict";
var $carousel = $('.carousel-main').flickity({
"wrapAround": true,
"draggable": true,
"prevNextButtons": false,
"pageDots": false
});
var $nav = $('.carousel-nav').flickity({
"on": {
ready: choseCenterSlide,
scroll: choseCenterSlide
},
"asNavFor": ".carousel-main",
"wrapAround": true,
"percentPosition": false,
"draggable": true,
"pageDots": false,
"prevNextButtons": false
});
;
var navDragging = false;
$nav.on('dragStart.flickity', function () {
return navDragging = true;
});
$nav.on('settle.flickity', function () {
return navDragging = false;
});
$nav.data('flickity').resize();
function choseCenterSlide() {
// check if this.x is within slideableWidth
var currentX = this.x > 0 ? -this.slideableWidth + this.x : this.x < -this.slideableWidth ? this.slideableWidth + this.x : this.x; // calculate closest slide
var distances = this.slides.map(function (slide) {
return -slide.target;
});
var closestDistance = distances.reduce(function (prev, curr) {
return Math.abs(curr - currentX) < Math.abs(prev - currentX) ? curr : prev;
});
var closestSlideIndex = distances.indexOf(closestDistance); // early return
if (closestSlideIndex == this.scrollSlideIndex) return; // register
if (this.scrollSlideIndex == null) this.scrollSlideIndex = this.selectedIndex; // change scrollSlide
this.slides[this.scrollSlideIndex].cells.forEach(function (cell) {
cell.element.classList.remove('is-closest');
});
this.slides[closestSlideIndex].cells.forEach(function (cell) {
cell.element.classList.add('is-closest');
}); // update state variable
this.scrollSlideIndex = closestSlideIndex; // update selectedSlide
if (navDragging) {
this.select(this.scrollSlideIndex);
if (this.navCompanion) {
this.navCompanion.select(this.scrollSlideIndex);
}
}
}
javascript
asked 2 mins ago
JulixJulix
1013
New contributor
Julix is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
I got a bit of a strange JS issue that I could use help on if anyone has time…
Basically if you flick the slider just the wrong way then it'll spin infinitely rather than just settle on a slide and stop. It's a bit hard to get it to do that. I think it has something to do with spinning past the gap between the first/last slide, but I can't quite tell where the problem is.
Do you see anything wrong with the code that might be the cause of that behaviour?
Here’s a reduced case:
https://codepen.io/Julix/pen/xexawP
and proof that it still works:
https://www.youtube.com/watch?v=RQQwsAq5BQU
Here's the JS code from that reduced case:
// Flickity slider from external js: flickity.pkgd.js
// Prev- and next classes from external js: https://codepen.io/desandro/pen/wWQQwN.js
"use strict";
var $carousel = $('.carousel-main').flickity({
"wrapAround": true,
"draggable": true,
"prevNextButtons": false,
"pageDots": false
});
var $nav = $('.carousel-nav').flickity({
"on": {
ready: choseCenterSlide,
scroll: choseCenterSlide
},
"asNavFor": ".carousel-main",
"wrapAround": true,
"percentPosition": false,
"draggable": true,
"pageDots": false,
"prevNextButtons": false
});
;
var navDragging = false;
$nav.on('dragStart.flickity', function () {
return navDragging = true;
});
$nav.on('settle.flickity', function () {
return navDragging = false;
});
$nav.data('flickity').resize();
function choseCenterSlide() {
// check if this.x is within slideableWidth
var currentX = this.x > 0 ? -this.slideableWidth + this.x : this.x < -this.slideableWidth ? this.slideableWidth + this.x : this.x; // calculate closest slide
var distances = this.slides.map(function (slide) {
return -slide.target;
});
var closestDistance = distances.reduce(function (prev, curr) {
return Math.abs(curr - currentX) < Math.abs(prev - currentX) ? curr : prev;
});
var closestSlideIndex = distances.indexOf(closestDistance); // early return
if (closestSlideIndex == this.scrollSlideIndex) return; // register
if (this.scrollSlideIndex == null) this.scrollSlideIndex = this.selectedIndex; // change scrollSlide
this.slides[this.scrollSlideIndex].cells.forEach(function (cell) {
cell.element.classList.remove('is-closest');
});
this.slides[closestSlideIndex].cells.forEach(function (cell) {
cell.element.classList.add('is-closest');
}); // update state variable
this.scrollSlideIndex = closestSlideIndex; // update selectedSlide
if (navDragging) {
this.select(this.scrollSlideIndex);
if (this.navCompanion) {
this.navCompanion.select(this.scrollSlideIndex);
}
}
}
javascript
javascript
asked 2 mins ago
JulixJulix
1013
New contributor
Julix is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 mins ago
JulixJulix
1013
New contributor
Julix is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 mins ago
JulixJulix
1013
New contributor
Julix is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 mins ago
JulixJulix
1013
asked 2 mins ago
JulixJulix
1013
1013
New contributor
Julix is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Julix is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Julix is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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