gpt4 book ai didi

javascript - 滑动或单击 slider 控件时轮播不正确滑动(下一个/上一个)

转载 作者:数据小太阳 更新时间:2023-10-29 04:06:45 25 4
gpt4 key购买 nike

我刚刚完成了一个旋转木马的构建,我一直在使用它使用滑动/触摸并使用诸如上一个/下一个控件来控制旋转木马。现在我遇到了关于轮播行为的问题。基本上我想让它一张一张地滑动。这是我一直在处理的代码示例。现在它似乎滑动了 2 或 3,具体取决于我放置的轮播数量。

我也有关于让它响应的问题

function fCarousel() {
// var activeSlide = 0;
// $('.faculty-carousel').attr('data-slide', '0');

var viewPortSize = $(window).width(),
facultyPanel = $('.faculty-carousel .faculty-items li'),
profileCount = facultyPanel.length,
activeSlide = 0,
carousel = $('.faculty-carousel .faculty-items');

$('.faculty-carousel').attr('data-slide', '0');

//Set Panel Size based on viewport

if (viewPortSize <= 1920 ) {
var profilePanelSize = viewPortSize / 5
}

if (viewPortSize < 1024 ) {
var profilePanelSize = viewPortSize / 4
}

if (viewPortSize < 768 ) {
var profilePanelSize = viewPortSize / 3
}

if (viewPortSize < 480 ) {
var profilePanelSize = viewPortSize
}

carousel.outerWidth( profilePanelSize * profileCount );
facultyPanel.outerWidth(profilePanelSize);
carousel.css('transform', 'translateX(' + 0 + '% )');

$('.prev').on('click', function(e) {
event.stopPropagation();

var carouselWrapper = $(this).closest('.faculty-carousel'),
facultyProfilePanel = carouselWrapper.find('.faculty-items li'),
facultyProfileCount = facultyProfilePanel.length,
viewPortSize = $(window).width(),
carousel = carouselWrapper.find('.faculty-items'),
position = 0,
currentSlide = parseInt(carouselWrapper.attr('data-slide'));

// Check if data-slide attribute is greater than 0
if (currentSlide > 0) {
// Decremement current slide
currentSlide--;
// Assign CSS position to clicked slider
var transformPercentage = -1 * currentSlide / facultyProfileCount * 100;
carousel.css('transform', 'translateX(' + transformPercentage + '% )');
// Update data-slide attribute
carouselWrapper.attr('data-slide', currentSlide);
activeSlide = currentSlide;
}
});

$('.next').on('click', function(e) {
event.stopPropagation();
// store variable relevent to clicked slider

var carouselWrapper = $(this).closest('.faculty-carousel'),
facultyProfilePanel = carouselWrapper.find('.faculty-items li'),
facultyProfileCount = facultyProfilePanel.length,
viewPortSize = $(window).width(),
carousel = carouselWrapper.find('.faculty-items'),
position = 0,
currentSlide = parseInt(carouselWrapper.attr('data-slide'));

// Check if dataslide is less than the total slides
if (currentSlide < facultyProfileCount - 1) {
// Increment current slide
currentSlide++;
// Assign CSS position to clicked slider
var transformPercentage = -1 * currentSlide / facultyProfileCount * 100;
carousel.css('transform', 'translateX(' + transformPercentage + '% )');
// Update data-slide attribute
carouselWrapper.attr('data-slide', currentSlide);
activeSlide = currentSlide;
}
})

$('.faculty-carousel .faculty-items').each(function() {

// create a simple instance
// by default, it only adds horizontal recognizers

var direction;
var touchSlider = this;
var mc = new Hammer.Manager(this),
itemLength = $(this).find('li').length,
count = 0,
slide = $(this),
timer;

var sliderWrapper = slide,
slideItems = sliderWrapper.find('li'),
//slider = sliderWrapper.find('li'),
totalPanels = slideItems.length,
currentSlide = parseInt(sliderWrapper.attr('data-slide'));

// mc.on("panleft panright", function(ev) {
// direction = ev.type;
// });

mc.add(new Hammer.Pan({
threshold: 0,
pointers: 0
}))
mc.on('pan', function(e) {
var percentage = 100 / totalPanels * e.deltaX / window.innerWidth;
var transformPercentage = percentage - 100 / totalPanels * activeSlide;
touchSlider.style.transform = 'translateX( ' + transformPercentage + '% )';
var sliderWrapper = $(e.target).closest('.faculty-carousel')


if (e.isFinal) { // NEW: this only runs on event end

var newSlide = activeSlide;
if (percentage < 0)
newSlide = activeSlide + 1;
else if (percentage > 0)
newSlide = activeSlide - 1;
goToSlide(newSlide, sliderWrapper);
}
});


var goToSlide = function(number, sliderWrapper) {
if (number < 0)
activeSlide = 0;
else if (number > totalPanels - 1)
activeSlide = totalPanels - 1
else
activeSlide = number;

sliderWrapper.attr('data-slide', activeSlide);

touchSlider.classList.add('slide-animation');
var percentage = -(100 / totalPanels) * activeSlide;
touchSlider.style.transform = 'translateX( ' + percentage + '% )';
timer = setTimeout(function() {
touchSlider.classList.remove('slide-animation');
}, 400);

};
});

}

$(document).ready(function() {
fCarousel();
})

$(window).on('resize', function(){
fCarousel();
})
/* http://meyerweb.com/eric/tools/css/reset/ 
v2.0 | 20110126
License: none (public domain)
*/

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
margin: 0;
padding: 0;
border: 0;
font-size: 100%;
font: inherit;
vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section {
display: block;
}
body {
line-height: 1;
}
ol, ul {
list-style: none;
}
blockquote, q {
quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
content: '';
content: none;
}
table {
border-collapse: collapse;
border-spacing: 0;
}
.faculty-items li {
height : 100px;
}
.faculty-items li:nth-child(odd) {
background-color : grey;
}
.faculty-items li:nth-child(even) {
background-color : aqua
}
.faculty-items {
overflow : hidden;
position : relative;
right : 0;
display : flex;
-webkit-transition: transform 0.3s linear;
}
.faculty-carousel .controls {
display : block;
}
<!doctype html>
<html>
<head>
<title>Carousel</title>
<link rel="stylesheet" href="style.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/hammer.js/2.0.8/hammer.min.js"></script>
</head>
<body>
<div class="faculty-carousel">
<ul class="faculty-items">
<li>Item 1</li>
<li>Item 2</li>
<li>Item 3</li>
<li>Item 4</li>
<li>Item 5</li>
<li>Item 6</li>
</ul>

<div class="controls">
<div class="prev">
prev
</div>

<div class="next">
next
</div>
</div>
</div>


<div class="faculty-carousel">
<ul class="faculty-items">
<li>Item 1</li>
<li>Item 2</li>
<li>Item 3</li>
<li>Item 4</li>
<li>Item 5</li>
<li>Item 6</li>
</ul>

<div class="controls">
<div class="prev">
prev
</div>

<div class="next">
next
</div>
</div>
</div>

<div class="faculty-carousel">
<ul class="faculty-items">
<li>Item 1</li>
<li>Item 2</li>
<li>Item 3</li>
<li>Item 4</li>
<li>Item 5</li>
<li>Item 6</li>
</ul>

<div class="controls">
<div class="prev">
prev
</div>

<div class="next">
next
</div>
</div>
</div>
</body>
</html>

最佳答案

好吧,我在这里的第一个回答是匆忙完成的,但我相信我有一个清晰的 JavaScript 表示,可以说明大多数现代轮播的功能,尽管如果您选择使用它,剩下的就取决于您了。

这里很好地解释了 JavaScript 方面的问题

// Index all Carousel
for (var i = 0; i < document.getElementsByClassName("carousel").length; i++) {
// Create a container for all the slides
document.getElementsByClassName("carousel")[i].innerHTML = (
'<div class="slides-container">' +
document.getElementsByClassName("carousel")[i].innerHTML +
'</div>'
);

// If the Carousel is automated
if (document.getElementsByClassName("carousel")[i].getAttribute("data-auto")) {
// Remove all white-space in the Carousel's "data-auto" attribute.
document.getElementsByClassName("carousel")[i].setAttribute("data-auto", document.getElementsByClassName("carousel")[i].getAttribute("data-auto").replace(/ /g, ""));

// Set the Carousel direction
document.getElementsByClassName("carousel")[i]._direction = String(document.getElementsByClassName("carousel")[i].getAttribute("data-auto").slice(0, document.getElementsByClassName("carousel")[i].getAttribute("data-auto").indexOf("_")));

// Set the Carousel interval
document.getElementsByClassName("carousel")[i]._interval = (parseFloat(document.getElementsByClassName("carousel")[i].getAttribute("data-auto").slice(document.getElementsByClassName("carousel")[i].getAttribute("data-auto").indexOf("_")).replace("_", "")) * 1000)
};

// Index all Carousel slides
for (var j = 0; j < document.getElementsByClassName("carousel")[i].querySelector(".slides-container").children.length; j++)
// Hide them
document.getElementsByClassName("carousel")[i].querySelector(".slides-container").children[j].hidden = true;

// Show the first one or the specified slide
document.getElementsByClassName("carousel")[i].querySelector(".slides-container").children[(parseInt(document.getElementsByClassName("carousel")[i].getAttribute("data-active")) || 0)].hidden = false;

// Carousel Next
document.getElementsByClassName("carousel")[i]._next = function() {
// Index all Carousel Slides
for (var j = 0; j < this.querySelector(".slides-container").children.length; j++)
// Show the next slide in the set
if (this.querySelector(".slides-container").children[j].hidden == false) {
this.querySelector(".slides-container").children[j].hidden = true;
(this.querySelector(".slides-container").children[j].nextElementSibling || this.querySelector(".slides-container").children[0]).hidden = false;

break
}
};

// Carousel Previous
document.getElementsByClassName("carousel")[i]._prev = function() {
// Index all Carousel Slides
for (var j = 0; j < this.querySelector(".slides-container").children.length; j++)
// Show the previous slide in the set
if (this.querySelector(".slides-container").children[j].hidden == false) {
this.querySelector(".slides-container").children[j].hidden = true;
(this.querySelector(".slides-container").children[j].previousElementSibling || this.querySelector(".slides-container").children[this.querySelector(".slides-container").children.length - 1]).hidden = false;

break
}
};

// Carousel Toggle
document.getElementsByClassName("carousel")[i]._toggle = function(slideIndex) {
// Index all Carousel Slides
for (var j = 0; j < this.querySelector(".slides-container").children.length; j++)
// Hide them
this.querySelector(".slides-container").children[j].hidden = true;

// Show the specified slide
(this.querySelector(".slides-container").children[slideIndex] || document.createElement("div")).hidden = false
};

// If the Carousel Interval is a Number
if (typeof document.getElementsByClassName("carousel")[i]._interval == "number") {
// Index
var index = i;

// Set an interval to automate the Carousel
setInterval(function() {
// If the Carousel direction is right
if (document.getElementsByClassName("carousel")[index]._direction == "right")
document.getElementsByClassName("carousel")[index]._next();

// If the Carousel direction is left
else if (document.getElementsByClassName("carousel")[index]._direction == "left")
document.getElementsByClassName("carousel")[index]._prev()
}, document.getElementsByClassName("carousel")[i]._interval)
}

// If the Carousel has buttons
if (document.getElementsByClassName("carousel")[i].hasAttribute("data-buttons"))
// Make the Buttons Container
document.getElementsByClassName("carousel")[i].innerHTML += (
'<div class="buttons-container">' +
'<button onclick="this.parentNode.parentNode._prev()"> Previous </button>' +
'<button onclick="this.parentNode.parentNode._next()"> Next </button>' +
'</div>'
)

// If the Carousel has indicators
if (document.getElementsByClassName("carousel")[i].hasAttribute("data-indicators"))
// Make the Indicators Container
document.getElementsByClassName("carousel")[i].innerHTML += (
'<div class="indicators-container">' +
// Place as many checkboxes for as many slides there are
(function() {
var indicators = "";

for (var k = 0; k < document.getElementsByClassName("carousel")[i].querySelector(".slides-container").children.length; k++)
indicators += (
'<input class="indicator-' + k + '" onclick="this.parentNode.parentNode._toggle(this.getAttribute(\'class\')[this.getAttribute(\'class\').length - 1])" type="checkbox">'
);

return indicators
})() +
'</div>'
);

// Add a click event to the Carousel
document.getElementsByClassName("carousel")[i].addEventListener("click", function() {
// Index all Carousel
for (var j = 0; j < document.getElementsByClassName("carousel").length; j++)
// If the Carousel indexed is not the target Carousel
if (document.getElementsByClassName("carousel")[j] != this)
// Blur it
document.getElementsByClassName("carousel")[j].removeAttribute("data-focus");

else
// 'Focus' it
document.getElementsByClassName("carousel")[j].setAttribute("data-focus", "")

// If the mouse click is to the left of the carousel
if (event.clientX < (this.getBoundingClientRect().left + (this.getBoundingClientRect().width / 2)))
this._prev();

// If the mouse click is to the right of the carousel
else if ((event.clientX > (this.getBoundingClientRect().left + (this.getBoundingClientRect().width / 2))))
this._next()
})
};

// Attach an event to the <body>.
document.body.addEventListener("keydown", function() {
switch (event.code) {
// If the left arrow key is pressed
case "ArrowLeft":
document.querySelector(".carousel[data-focus")._prev();
break;

// If the right arrow key is pressed
case "ArrowRight":
document.querySelector(".carousel[data-focus")._next();
break;
}
})

在 Carousel 的这部分代码中,.hidden 属性可以替换为任何其他属性,但它给出了幻灯片如何通过事件和非事件状态传递的基本概念。至于HTML部分

<html>
<body>
<div class="carousel" data-active="1" data-auto="right_1" data-buttons data-indicators style="height: 300px">
<div style="background: #F00; color: #FFF; font-size: 50px; height: 100%; line-height: 300px; text-align: center"> R </div>
<div style="background: #0F0; color: #FFF; font-size: 50px; height: 100%; line-height: 300px; text-align: center"> G </div>
<div style="background: #00F; color: #FFF; font-size: 50px; height: 100%; line-height: 300px; text-align: center"> B </div>
</div>

<!-- The JS script for the Carousel -->
<script src="carousel.js"> </script>
</body>
</html>

一切都已简化:carouselclass 来制作一个新的 Carousel,data-active 属性表示哪张幻灯片处于事件状态(从 0 开始),data-auto 属性指定 Carousel 是否自动化(right_ 代表自动化的方向,_1 代表多长时间区间为),data-buttons 属性(如果需要按钮),data-indicators 如果需要 Carousel indicators 和幻灯片作为旋转木马的 child 。

是的,这几乎就是构建简单轮播所需的 HTML/JS 代码。

如果您正在寻找 JavaScript 世界中发生的任何令人兴奋的事情,我正在开发一个库,我想您可能会对它感兴趣:https://github.com/LapysDev/LapysJS .

关于javascript - 滑动或单击 slider 控件时轮播不正确滑动(下一个/上一个),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45982800/

25 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com