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NIKITA4444444444444444.html
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NIKITA4444444444444444.html
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<!DOCTYPE html>
<html lang="ru">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<title>СЛАЙДЕР</title>
<style>
body {
margin: 0;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
color: #fff;
height: 3000px;
}
.slider {
position: relative;
overflow: hidden;
}
.slider__wrapper {
display: flex;
transition: transform 0.6s ease;
}
.slider__item {
flex: 0 0 100%;
max-width: 100%;
}
@media (min-width: 980px) {
.slider__item {
flex: 0 0 50%;
max-width: 50%;
}
}
.slider__control {
position: absolute;
top: 50%;
display: flex;
align-items: center;
justify-content: center;
width: 40px;
color: #fff;
text-align: center;
opacity: 0.5;
height: 50px;
transform: translateY(-50%);
background: rgba(0, 0, 0, .5);
}
.slider__control:hover,
.slider__control:focus {
color: #fff;
text-decoration: none;
outline: 0;
opacity: .9;
}
.slider__control_left {
left: 0;
}
.slider__control_right {
right: 0;
}
.slider__control::before {
content: '';
display: inline-block;
width: 20px;
height: 20px;
background: transparent no-repeat center center;
background-size: 100% 100%;
}
.slider__control_left::before {
background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' viewBox='0 0 8 8'%3E%3Cpath d='M5.25 0l-4 4 4 4 1.5-1.5-2.5-2.5 2.5-2.5-1.5-1.5z'/%3E%3C/svg%3E");
}
.slider__control_right::before {
background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' viewBox='0 0 8 8'%3E%3Cpath d='M2.75 0l-1.5 1.5 2.5 2.5-2.5 2.5 1.5 1.5 4-4-4-4z'/%3E%3C/svg%3E");
}
.slider__item>div {
line-height: 250px;
font-size: 100px;
text-align: center;
}
</style>
</head>
<body>
<div class="slider">
<div class="slider__wrapper">
<div class="slider__item">
<div style="height: 250px; background: orange;">1</div>
</div>
<div class="slider__item">
<div style="height: 250px; background: green;">2</div>
</div>
<div class="slider__item">
<div style="height: 250px; background: violet;">3</div>
</div>
<div class="slider__item">
<div style="height: 250px; background: coral;">4</div>
</div>
</div>
<a class="slider__control slider__control_left" href="#" role="button"></a>
<a class="slider__control slider__control_right" href="#" role="button"></a>
</div>
<script>
'use strict';
var multiItemSlider = (function () {
function _isElementVisible(element) {
var rect = element.getBoundingClientRect(),
vWidth = window.innerWidth || doc.documentElement.clientWidth,
vHeight = window.innerHeight || doc.documentElement.clientHeight,
elemFromPoint = function (x, y) { return document.elementFromPoint(x, y) };
if (rect.right < 0 || rect.bottom < 0
|| rect.left > vWidth || rect.top > vHeight)
return false;
return (
element.contains(elemFromPoint(rect.left, rect.top))
|| element.contains(elemFromPoint(rect.right, rect.top))
|| element.contains(elemFromPoint(rect.right, rect.bottom))
|| element.contains(elemFromPoint(rect.left, rect.bottom))
);
}
return function (selector, config) {
var
_mainElement = document.querySelector(selector),
_sliderWrapper = _mainElement.querySelector('.slider__wrapper'),
_sliderItems = _mainElement.querySelectorAll('.slider__item'),
_sliderControls = _mainElement.querySelectorAll('.slider__control'),
_sliderControlLeft = _mainElement.querySelector('.slider__control_left'),
_sliderControlRight = _mainElement.querySelector('.slider__control_right'),
_wrapperWidth = parseFloat(getComputedStyle(_sliderWrapper).width),
_itemWidth = parseFloat(getComputedStyle(_sliderItems[0]).width),
_positionLeftItem = 0,
_transform = 0,
_step = _itemWidth / _wrapperWidth * 100,
_items = [],
_interval = 0,
_html = _mainElement.innerHTML,
_states = [
{ active: false, minWidth: 0, count: 1 },
{ active: false, minWidth: 980, count: 2 }
],
_config = {
isCycling: false,
direction: 'right',
interval: 5000,
pause: true
};
for (var key in config) {
if (key in _config) {
_config[key] = config[key];
}
}
_sliderItems.forEach(function (item, index) {
_items.push({ item: item, position: index, transform: 0 });
});
var _setActive = function () {
var _index = 0;
var width = parseFloat(document.body.clientWidth);
_states.forEach(function (item, index, arr) {
_states[index].active = false;
if (width >= _states[index].minWidth)
_index = index;
});
_states[_index].active = true;
}
var _getActive = function () {
var _index;
_states.forEach(function (item, index, arr) {
if (_states[index].active) {
_index = index;
}
});
return _index;
}
var position = {
getItemMin: function () {
var indexItem = 0;
_items.forEach(function (item, index) {
if (item.position < _items[indexItem].position) {
indexItem = index;
}
});
return indexItem;
},
getItemMax: function () {
var indexItem = 0;
_items.forEach(function (item, index) {
if (item.position > _items[indexItem].position) {
indexItem = index;
}
});
return indexItem;
},
getMin: function () {
return _items[position.getItemMin()].position;
},
getMax: function () {
return _items[position.getItemMax()].position;
}
}
var _transformItem = function (direction) {
var nextItem;
if (!_isElementVisible(_mainElement)) {
return;
}
if (direction === 'right') {
_positionLeftItem++;
if ((_positionLeftItem + _wrapperWidth / _itemWidth - 1) > position.getMax()) {
nextItem = position.getItemMin();
_items[nextItem].position = position.getMax() + 1;
_items[nextItem].transform += _items.length * 100;
_items[nextItem].item.style.transform = 'translateX(' + _items[nextItem].transform + '%)';
}
_transform -= _step;
}
if (direction === 'left') {
_positionLeftItem--;
if (_positionLeftItem < position.getMin()) {
nextItem = position.getItemMax();
_items[nextItem].position = position.getMin() - 1;
_items[nextItem].transform -= _items.length * 100;
_items[nextItem].item.style.transform = 'translateX(' + _items[nextItem].transform + '%)';
}
_transform += _step;
}
_sliderWrapper.style.transform = 'translateX(' + _transform + '%)';
}
var _cycle = function (direction) {
if (!_config.isCycling) {
return;
}
_interval = setInterval(function () {
_transformItem(direction);
}, _config.interval);
}
var _controlClick = function (e) {
if (e.target.classList.contains('slider__control')) {
e.preventDefault();
var direction = e.target.classList.contains('slider__control_right') ? 'right' : 'left';
_transformItem(direction);
clearInterval(_interval);
_cycle(_config.direction);
}
};
var _handleVisibilityChange = function () {
if (document.visibilityState === "hidden") {
clearInterval(_interval);
} else {
clearInterval(_interval);
_cycle(_config.direction);
}
}
var _refresh = function () {
clearInterval(_interval);
_mainElement.innerHTML = _html;
_sliderWrapper = _mainElement.querySelector('.slider__wrapper');
_sliderItems = _mainElement.querySelectorAll('.slider__item');
_sliderControls = _mainElement.querySelectorAll('.slider__control');
_sliderControlLeft = _mainElement.querySelector('.slider__control_left');
_sliderControlRight = _mainElement.querySelector('.slider__control_right');
_wrapperWidth = parseFloat(getComputedStyle(_sliderWrapper).width);
_itemWidth = parseFloat(getComputedStyle(_sliderItems[0]).width);
_positionLeftItem = 0;
_transform = 0;
_step = _itemWidth / _wrapperWidth * 100;
_items = [];
_sliderItems.forEach(function (item, index) {
_items.push({ item: item, position: index, transform: 0 });
});
}
var _setUpListeners = function () {
_mainElement.addEventListener('click', _controlClick);
if (_config.pause && _config.isCycling) {
_mainElement.addEventListener('mouseenter', function () {
clearInterval(_interval);
});
_mainElement.addEventListener('mouseleave', function () {
clearInterval(_interval);
_cycle(_config.direction);
});
}
document.addEventListener('visibilitychange', _handleVisibilityChange, false);
window.addEventListener('resize', function () {
var
_index = 0,
width = parseFloat(document.body.clientWidth);
_states.forEach(function (item, index, arr) {
if (width >= _states[index].minWidth)
_index = index;
});
if (_index !== _getActive()) {
_setActive();
_refresh();
}
});
}
_setUpListeners();
if (document.visibilityState === "visible") {
_cycle(_config.direction);
}
_setActive();
return {
right: function () {
_transformItem('right');
},
left: function () {
_transformItem('left');
},
stop: function () {
_config.isCycling = false;
clearInterval(_interval);
},
cycle: function () {
_config.isCycling = true;
clearInterval(_interval);
_cycle();
}
}
}
}());
var slider = multiItemSlider('.slider', {
isCycling: true
})
</script>
</body>
</html>