picture/index.html at master · yayalif/picture · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimun-scale=1.0,user-scalable=no">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <meta name="apple-touch-fullscreen" content="YES" />
  <meta name="apple-mobile-web-app-status-bar-style" content="black" />
  <title>Document</title>
    <style>
      body {
        margin: 0;
        padding: 0;
        background: #333;
        overflow: hidden;
        width: 100vw;
        height: 100vh;
      }
      #canvas {
        height: 100%;
        width: 100%;
        /* overflow: hidden; */
      }
      ul, li {
        list-style: none;
        padding: 0;
        margin: 0;
      }
      ul {
        width: 100%;
        height: 100%;
        display: flex;
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
      }
      li {
        position: absolute;
        display: table-cell;
        left: 0;
        /* width: 100px;
        height: 100px; */
      }
      img {
        width: 375px;
        /* height: 100%; */
      }

    </style>
</head>
<body>
  <div id="canvas">
    <!-- <ul>
      <li style="transform: translate3d(0, 0, 0)">
        <img src="./1.jpg">
      </li>
      <li style="transform: translate3d(0, 0, 0)">
        <img src="./2.jpg">
      </li>
      <li style="transform: translate3d(0, 0, 0)">
        <img src="./3.jpg">
      </li>
      <li style="transform: translate3d(0, 0, 0)">
        <img src="./4.jpg">
      </li>
      <li style="transform: translate3d(0, 0, 0)">
        <img src="./5.jpg">
      </li>
    </ul> -->
  </div>
  <script>
    const list = ['./imgs./1.jpg', './imgs./2.jpg', './imgs./3.jpg', './imgs./4.jpg', './imgs./5.jpg']
      function slider(opts) {
        this.wrap = opts.dom
        this.list = opts.list

        this.init();
        this.renderDom()
        this.bindDom()
      }
      slider.prototype.init = function() {
        this.radio = window.innerHeight/window.innerWidth

        this.scaleW = window.innerWidth

        this.idx = 0


      },
       slider.prototype.renderDom = function () {
         let wrap = this.wrap
         let data = this.list
         var len = data.length

         this.outer = document.createElement('ul')
         for (let i = 0; i<data.length; i++) {
           let li = document.createElement('li')
           let img = document.createElement('img')
           img.src = data[i]
           li.appendChild(img)
           li.style.transform = 'translate3d('+ (window.innerWidth * i) +'px, 0, 0)'
           this.outer.appendChild(li)
         }
         this.wrap.appendChild(this.outer)
        },
         slider.prototype.bindDom = function () {
            var self = this
            let outer = self.outer
            let lem = self.list.length

            var startHander = function(evt) {
              self.startx = evt.touches[0].pageX
              self.offsetX = 0;
              self.startTime = new Date() * 1

            }
            var moveHander = function (evt) {
              console.log(self.idx, self.offsetX, 'self.idx')
              evt.preventDefault()
              self.offsetX = evt.touches[0].pageX - self.startx
              let lis = outer.getElementsByTagName('li')
              for (i=0; i < lis.length; i++) {

                lis[i] && (lis[i].style.transform = 'translate3d('+ ( (i - self.idx)*window.innerWidth + self.offsetX) + 'px, 0, 0)')
                lis[i] && (lis[i].style.transition = 'none')
              }

            }
            var endHander = function (evt) {
              let boundary = window.innerWidth/6;
              let lis = outer.getElementsByTagName('li')

              if(self.offsetX > boundary) {
                // 前一页
                self.go(-1)
              } else if (-self.offsetX > boundary) {
                // 后一页
                self.go(1)
              } else {
                self.go(0)
              }
            }
            outer.addEventListener('touchstart', startHander)
            outer.addEventListener('touchmove', moveHander)
            outer.addEventListener('touchend', endHander)
        }
        slider.prototype.go = function(step) {
          let boundary = window.innerWidth / 6;
          let self = this

          let lis = this.outer.getElementsByTagName('li')
          if(step < 0) {
            // 前一页
            self.idx = self.idx - 1
            if (self.idx < 0) {
              self.idx = lis.length-1
            }
          } else if (step > 0) {
            self.idx = self.idx + 1
            if (self.idx > lis.length-1) {
              self.idx = 0
            }
          }
            for (let i = 0; i < lis.length; i++) {
              lis[i].style.transform = 'translate3d('+( (i-self.idx) * window.innerWidth )+'px, 0, 0)'
              lis[i].style.transition = 'all .5s linear'
            }
        }
      new slider({
        'dom': document.getElementById('canvas'),
        list: list
      })

  </script>
</body>
</html>