swipe.js 轻松实现手机端滑动效果

<div class='swipe'>
<div class='swipe-wrap'>
<section>第1</section>
<section>第2</section>
<section>第3</section>
</div>
</div>

*{
  padding:0;
  margin:0;
}
html,body{
  height:100%;
}
.swipe {
  overflow: hidden;
  visibility: hidden;
  position: relative;
  height:100%;
}
.swipe-wrap {
  overflow: hidden;
  position: relative;
  height:100%;
}
.swipe-wrap > section {
  float:left;
  100%;
  height:100%;
  position: relative;
}
.swipe-wrap > section:nth-child(1){
  background:#ccc;
}
.swipe-wrap > section:nth-child(2){
  background:pink;
}
.swipe-wrap > section:nth-child(3){
  background:#ddd;
}

window.mySwipe = Swipe(document.getElementById('slider'));

<button onclick="Swipe.prev()">prev</button>
<button onclick="Swipe.next()">next</button>

/** Swipe 2.0
 *
 * Brad Birdsall
 * Copyright 2013, MIT License
 *
*/

functionSwipe(container, options) {

  "use strict";

  //utilities
  var noop = function() {}; //simple no operation function
  var offloadFn = function(fn) { setTimeout(fn || noop, 0) }; //offload a functions execution
  
  //check browser capabilities
  var browser ={
    addEventListener: !!window.addEventListener,
    touch: ('ontouchstart' in window) || window.DocumentTouch && document instanceofDocumentTouch,
    transitions: (function(temp) {
      var props = ['transformProperty', 'WebkitTransform', 'MozTransform', 'OTransform', 'msTransform'];
      for ( var i in props ) if (temp.style[ props[i] ] !== undefined) return true;
      return false;
    })(document.createElement('swipe'))
  };

  //quit if no root element
  if (!container) return;
  var element = container.children[0];
  varslides, slidePos, height;
  options = options ||{};
  var index = parseInt(options.startSlide, 10) || 0;
  var speed = options.speed || 500;
  options.continuous = options.continuous ? options.continuous : true;

  functionsetup() {

    //cache slides
    slides =element.children;

    //create an array to store current positions of each slide
    slidePos = newArray(slides.length);

    //determine height of each slide
    height = container.getBoundingClientRect().height ||container.offsetHeight;

    element.style.height = ( height) + 'px';

    //stack elements
    var pos =slides.length;
    while(pos--) {

      var slide =slides[pos];
      slide.style.height = height + 'px';
      slide.setAttribute('data-index', pos);

      if(browser.transitions) {
        slide.style.top = (pos * -height) + 'px';
        move(pos, index > pos ? -height : (index < pos ? height : 0), 0);
      }

    }

    if (!browser.transitions) element.style.top = (index * -height) + 'px';

    container.style.visibility = 'visible';

  }

  functionprev() {

    if (index) slide(index-1);
    else if (options.continuous) slide(slides.length-1);

  }

  functionnext() {

    if (index < slides.length - 1) slide(index+1);
    else if (options.continuous) slide(0);

  }

  functionslide(to, slideSpeed) {

    //do nothing if already on requested slide
    if (index == to) return;
    
    if(browser.transitions) {

      var diff = Math.abs(index-to) - 1;
      var direction = Math.abs(index-to) / (index-to); //1:right -1:left

      while (diff--) move((to > index ? to : index) - diff - 1, height * direction, 0);

      move(index, height * direction, slideSpeed ||speed);
      move(to, 0, slideSpeed ||speed);

    } else{

      animate(index * -height, to * -height, slideSpeed ||speed);

    }

    index =to;

    offloadFn(options.callback &&options.callback(index, slides[index]));

  }

  functionmove(index, dist, speed) {

    translate(index, dist, speed);
    slidePos[index] =dist;


  }

  functiontranslate(index, dist, speed) {
    var slide =slides[index];
    var style = slide &&slide.style;

    if (!style) return;

    style.webkitTransitionDuration =style.MozTransitionDuration =style.msTransitionDuration =style.OTransitionDuration =style.transitionDuration = speed + 'ms';

    style.webkitTransform = 'translate(0,' + dist + 'px)' + 'translateZ(0)';
    style.msTransform =style.MozTransform =style.OTransform = 'translateY(' + dist + 'px)';

  }

  functionanimate(from, to, speed) {

    //if not an animation, just reposition
    if (!speed) {
      
      element.style.top = to + 'px';
      return;

    }

    
    var start = +newDate;
    
    var timer = setInterval(function() {

      var timeElap = +new Date -start;
      
      if (timeElap >speed) {

        element.style.top = to + 'px';

        if(delay) begin();

        options.transitionEnd &&options.transitionEnd.call(event, index, slides[index]);

        clearInterval(timer);
        return;

      }

      element.style.top = (( (to - from) * (Math.floor((timeElap / speed) * 100) / 100) ) + from) + 'px';

    }, 4);

  }

  //setup auto slideshow
  var delay = options.auto || 0;
  varinterval;

  functionbegin() {

    interval =setTimeout(next, delay);

  }

  functionstop() {

    delay = 0;
    clearTimeout(interval);

  }


  //setup initial vars
  var start ={};
  var delta ={};
  varisScrolling;      

  //setup event capturing
  var events ={

    handleEvent: function(event) {

      switch(event.type) {
        case 'touchstart': this.start(event); break;
        case 'touchmove': this.move(event); break;
        case 'touchend': offloadFn(this.end(event)); break;
        case 'webkitTransitionEnd':
        case 'msTransitionEnd':
        case 'oTransitionEnd':
        case 'otransitionend':
        case 'transitionend': offloadFn(this.transitionEnd(event)); break;
        case 'resize': offloadFn(setup.call()); break;
      }

      if(options.stopPropagation) event.stopPropagation();

    },
    start: function(event) {

      var touches = event.touches[0];

      //measure start values
      start ={

        //get initial touch coords
x: touches.pageX,
        y: touches.pageY,

        //store time to determine touch duration
        time: +newDate

      };
      
      //used for testing first move event
      isScrolling =undefined;

      //reset delta and end measurements
      delta ={};

      //attach touchmove and touchend listeners
      element.addEventListener('touchmove', this, false);
      element.addEventListener('touchend', this, false);

    },
    move: function(event) {

      //ensure swiping with one touch and not pinching
      if ( event.touches.length > 1 || event.scale && event.scale !== 1) return

      if(options.disableScroll) event.preventDefault();

      var touches = event.touches[0];

      //measure change in x and y
      delta ={
        x: touches.pageX -start.x,
        y: touches.pageY -start.y
      }

      //determine if scrolling test has run - one time test
      if ( typeof isScrolling == 'undefined') {
        isScrolling = !!( isScrolling || Math.abs(delta.y) <Math.abs(delta.x) );
      }

      //if user is not trying to scroll vertically
      if (!isScrolling) {

        //prevent native scrolling 
event.preventDefault();

        //stop slideshow
stop();

        //increase resistance if first or last slide
        delta.y =delta.y /( (!index && delta.y > 0               //if first slide and sliding left
              || index == slides.length - 1        //or if last slide and sliding right
              && delta.y < 0                       //and if sliding at all
            ) ?( Math.abs(delta.y) / height + 1 )      //determine resistance level
            : 1 );                                 //no resistance if false
        
        //translate 1:1
        translate(index-1, delta.y + slidePos[index-1], 0);
        translate(index, delta.y + slidePos[index], 0);
        translate(index+1, delta.y + slidePos[index+1], 0);

      }

    },
    end: function(event) {

      //measure duration
      var duration = +new Date -start.time;

      //determine if slide attempt triggers next/prev slide
      var isValidSlide =Number(duration) < 250               //if slide duration is less than 250ms
            && Math.abs(delta.y) > 20            //and if slide amt is greater than 20px
            || Math.abs(delta.y) > height/2;      // or ifslide amt is greater than half the width

      //determine if slide attempt is past start and end
      var isPastBounds = 
            !index && delta.y > 0                            //if first slide and slide amt is greater than 0
            || index == slides.length - 1 && delta.y < 0;    //or if last slide and slide amt is less than 0
      
      //determine direction of swipe (true:right, false:left)
      var direction = delta.y < 0;

      //if not scrolling vertically
      if (!isScrolling) {

        if (isValidSlide && !isPastBounds) {

          if(direction) {

            move(index-1, -height, 0);
            move(index, slidePos[index]-height, speed);
            move(index+1, slidePos[index+1]-height, speed);
            index += 1;

          } else{

            move(index+1, height, 0);
            move(index, slidePos[index]+height, speed);
            move(index-1, slidePos[index-1]+height, speed);
            index += -1;

          }

          options.callback &&options.callback(index, slides[index]);

        } else{

          move(index-1, -height, speed);
          move(index, 0, speed);
          move(index+1, height, speed);

        }

      }

      //kill touchmove and touchend event listeners until touchstart called again
      element.removeEventListener('touchmove', events, false)
      element.removeEventListener('touchend', events, false)

    },
    transitionEnd: function(event) {

      if (parseInt(event.target.getAttribute('data-index'), 10) ==index) {
        
        if(delay) begin();

        options.transitionEnd &&options.transitionEnd.call(event, index, slides[index]);

      }

    }

  }

  //trigger setup
setup();

  //start auto slideshow if applicable
  if(delay) begin();


  //add event listeners
  if(browser.addEventListener) {
    
    //set touchstart event on element    
    if (browser.touch) element.addEventListener('touchstart', events, false);

    if(browser.transitions) {
      element.addEventListener('webkitTransitionEnd', events, false);
      element.addEventListener('msTransitionEnd', events, false);
      element.addEventListener('oTransitionEnd', events, false);
      element.addEventListener('otransitionend', events, false);
      element.addEventListener('transitionend', events, false);
    }

    //set resize event on window
    window.addEventListener('resize', events, false);

  } else{

    window.onresize = function () { setup() }; //to play nice with old IE
}

  //expose the Swipe API
  return{
    setup: function() {

      setup();

    },
    slide: function(to, speed) {

      slide(to, speed);

    },
    prev: function() {

      //cancel slideshow
stop();

      prev();

    },
    next: function() {

      stop();

      next();

    },
    getPos: function() {

      //return current index position
      returnindex;

    },
    kill: function() {

      //cancel slideshow
stop();

      //reset element
      element.style.width = 'auto';
      element.style.top = 0;

      //reset slides
      var pos =slides.length;
      while(pos--) {

        var slide =slides[pos];
        slide.style.width = '100%';
        slide.style.top = 0;

        if (browser.transitions) translate(pos, 0, 0);

      }

      //removed event listeners
      if(browser.addEventListener) {

        //remove current event listeners
        element.removeEventListener('touchstart', events, false);
        element.removeEventListener('webkitTransitionEnd', events, false);
        element.removeEventListener('msTransitionEnd', events, false);
        element.removeEventListener('oTransitionEnd', events, false);
        element.removeEventListener('otransitionend', events, false);
        element.removeEventListener('transitionend', events, false);
        window.removeEventListener('resize', events, false);

      }
      else{

        window.onresize = null;

      }

    }
  }

}


if ( window.jQuery ||window.Zepto ) {
  (function($) {
    $.fn.Swipe = function(params) {
      return this.each(function() {
        $(this).data('Swipe', new Swipe($(this)[0], params));
      });
    }
  })( window.jQuery ||window.Zepto )
}