移动手机APP手指滑动切换图片特效附源码下载

2019-11-20 11:07:14

字体：大中小

来源：转载

供稿：网友

这是一款效果非常炫酷的移动手机APP滑动手指切换图片特效。该APP特效在移动手机中用户可以通过手指的左右滑动来切换图片，在桌面设备中通过鼠标也可达到同样的效果。

效果演示源码下载

使用方法

HTML结构

这个移动手机APP切换图片特效的HTML结构采用嵌套<div>的HTML结构，每一张图片卡片都包裹在div.demo__card中，里面放置了图片，描述信息和一些额外的图层。

<div class="demo__card"> <div class="demo__card__top brown"> <div class="demo__card__img"></div> <p class="demo__card__name">Hungry cat</p> </div> <div class="demo__card__btm"> <p class="demo__card__we">Whatever</p> </div> <div class="demo__card__choice m--reject"></div> <div class="demo__card__choice m--like"></div> <div class="demo__card__drag"></div></div>

m--reject是向左移动图片时的图层，m--like是向右移动图片时的图层，demo__card__drag是拖动层。

JavaScript

在jQuery代码中，pullChange()函数用于设置向左和向右两个滑动层的旋转角度和透明度。release()函数用于判断用户是向左还是向右滑动手指，并为这些动作在DOM元素上添加相应的class。

function pullChange() { animating = true; deg = pullDeltaX / 10; $card.css('transform', 'translateX(' + pullDeltaX + 'px) rotate(' + deg + 'deg)'); var opacity = pullDeltaX / 100; var rejectOpacity = opacity >= 0 ? 0 : Math.abs(opacity); var likeOpacity = opacity <= 0 ? 0 : opacity; $cardReject.css('opacity', rejectOpacity); $cardLike.css('opacity', likeOpacity);};function release() { if (pullDeltaX >= decisionVal) {  $card.addClass('to-right'); } else if (pullDeltaX <= -decisionVal) {  $card.addClass('to-left'); } if (Math.abs(pullDeltaX) >= decisionVal) {  $card.addClass('inactive');  setTimeout(function () {   $card.addClass('below').removeClass('inactive to-left to-right');   cardsCounter++;   if (cardsCounter === numOfCards) {    cardsCounter = 0;    $('.demo__card').removeClass('below');   }  }, 300); } if (Math.abs(pullDeltaX) < decisionVal) {  $card.addClass('reset'); } setTimeout(function () {  $card.attr('style', '').removeClass('reset').find('.demo__card__choice').attr('style', '');  pullDeltaX = 0;  animating = false; }, 300);};

最后监听mousedown和touchstart事件，并对非.inactive的卡片元素执行卡片切换操作。

使用方法

HTML结构

<div class="demo__card"> <div class="demo__card__top brown"> <div class="demo__card__img"></div> <p class="demo__card__name">Hungry cat</p> </div> <div class="demo__card__btm"> <p class="demo__card__we">Whatever</p> </div> <div class="demo__card__choice m--reject"></div> <div class="demo__card__choice m--like"></div> <div class="demo__card__drag"></div></div>

m--reject是向左移动图片时的图层，m--like是向右移动图片时的图层，demo__card__drag是拖动层。

JavaScript

function pullChange() { animating = true; deg = pullDeltaX / 10; $card.css('transform', 'translateX(' + pullDeltaX + 'px) rotate(' + deg + 'deg)'); var opacity = pullDeltaX / 100; var rejectOpacity = opacity >= 0 ? 0 : Math.abs(opacity); var likeOpacity = opacity <= 0 ? 0 : opacity; $cardReject.css('opacity', rejectOpacity); $cardLike.css('opacity', likeOpacity);};function release() { if (pullDeltaX >= decisionVal) {  $card.addClass('to-right'); } else if (pullDeltaX <= -decisionVal) {  $card.addClass('to-left'); } if (Math.abs(pullDeltaX) >= decisionVal) {  $card.addClass('inactive');  setTimeout(function () {   $card.addClass('below').removeClass('inactive to-left to-right');   cardsCounter++;   if (cardsCounter === numOfCards) {    cardsCounter = 0;    $('.demo__card').removeClass('below');   }  }, 300); } if (Math.abs(pullDeltaX) < decisionVal) {  $card.addClass('reset'); } setTimeout(function () {  $card.attr('style', '').removeClass('reset').find('.demo__card__choice').attr('style', '');  pullDeltaX = 0;  animating = false; }, 300);};

最后监听mousedown和touchstart事件，并对非.inactive的卡片元素执行卡片切换操作。

$(document).on('mousedown touchstart', '.demo__card:not(.inactive)', function (e) { if (animating)  return; $card = $(this); $cardReject = $('.demo__card__choice.m--reject', $card); $cardLike = $('.demo__card__choice.m--like', $card); var startX = e.pageX || e.originalEvent.touches[0].pageX; $(document).on('mousemove touchmove', function (e) {  var x = e.pageX || e.originalEvent.touches[0].pageX;  pullDeltaX = x - startX;  if (!pullDeltaX)   return;  pullChange(); }); $(document).on('mouseup touchend', function () {  $(document).off('mousemove touchmove mouseup touchend');  if (!pullDeltaX)   return;  release(); });});

上一篇：JS简单模拟触发按钮点击功能的方法

下一篇：轻松学习jQuery插件EasyUI EasyUI实现拖放商品放置购物车