鼠標滾輪平滑滾動

Question

我在尋找使平滑滾動效果在我的網站，這樣的網站：

http://www.femmefatale.paris/fr/project/tati-express http://onirim.com/photographers/olaf-wipperfurth/

我只找到這個腳本：https://github.com/fatlinesofcode/jquery.smoothwheel 但它不工作時，您在滾動保持滾動你的網頁...

這裏是我的代碼適用於身體：

https://jsfiddle.net/bLhs0fkn/1/

(function ($) { 


var self = this, container, running=false, currentY = 0, targetY = 0, oldY = 0, maxScrollTop= 0, minScrollTop, direction, onRenderCallback=null, 
     fricton = 0.95, // higher value for slower deceleration 
     vy = 0, 
     stepAmt = 0.8, 
     minMovement= 0.3, 
     ts=0.1; 

var updateScrollTarget = function (amt) { 
    targetY += amt; 
    vy += (targetY - oldY) * stepAmt; 

    oldY = targetY; 


} 
var render = function() { 
    if (vy < -(minMovement) || vy > minMovement) { 

     currentY = (currentY + vy); 
     if (currentY > maxScrollTop) { 
      currentY = vy = 0; 
     } else if (currentY < minScrollTop) { 
       vy = 0; 
       currentY = minScrollTop; 
      } 

     container.scrollTop(-currentY); 

     vy *= fricton; 

    // vy += ts * (currentY-targetY); 
     // scrollTopTweened += settings.tweenSpeed * (scrollTop - scrollTopTweened); 
     // currentY += ts * (targetY - currentY); 

     if(onRenderCallback){ 
      onRenderCallback(); 
     } 
    } 
} 
var animateLoop = function() { 
    if(! running)return; 
    requestAnimFrame(animateLoop); 
    render(); 
    //log("45","animateLoop","animateLoop", "",stop); 
} 
var onWheel = function (e) { 
    e.preventDefault(); 
    var evt = e.originalEvent; 

    var delta = evt.detail ? evt.detail * -1 : evt.wheelDelta/40; 
    var dir = delta < 0 ? -1 : 1; 
    if (dir != direction) { 
     vy = 0; 
     direction = dir; 
    } 

    //reset currentY in case non-wheel scroll has occurred (scrollbar drag, etc.) 
    currentY = -container.scrollTop(); 

    updateScrollTarget(delta); 
} 

/* 
* http://paulirish.com/2011/requestanimationframe-for-smart-animating/ 
*/ 
window.requestAnimFrame = (function() { 
    return window.requestAnimationFrame || 
      window.webkitRequestAnimationFrame || 
      window.mozRequestAnimationFrame || 
      window.oRequestAnimationFrame || 
      window.msRequestAnimationFrame || 
      function (callback) { 
       window.setTimeout(callback, 1000/60); 
      }; 


})(); 

/* 
* http://jsbin.com/iqafek/2/edit 
*/ 
var normalizeWheelDelta = function() { 
    // Keep a distribution of observed values, and scale by the 
    // 33rd percentile. 
    var distribution = [], done = null, scale = 30; 
    return function (n) { 
     // Zeroes don't count. 
     if (n == 0) return n; 
     // After 500 samples, we stop sampling and keep current factor. 
     if (done != null) return n * done; 
     var abs = Math.abs(n); 
     // Insert value (sorted in ascending order). 
     outer: do { // Just used for break goto 
      for (var i = 0; i < distribution.length; ++i) { 
       if (abs <= distribution[i]) { 
        distribution.splice(i, 0, abs); 
        break outer; 
       } 
      } 
      distribution.push(abs); 
     } while (false); 
     // Factor is scale divided by 33rd percentile. 
     var factor = scale/distribution[Math.floor(distribution.length/3)]; 
     if (distribution.length == 500) done = factor; 
     return n * factor; 
    }; 
}(); 


$.fn.smoothWheel = function() { 
    // var args = [].splice.call(arguments, 0); 
    var options = jQuery.extend({}, arguments[0]); 
    return this.each(function (index, elm) { 

     if(!('ontouchstart' in window)){ 
      container = $(this); 
      container.bind("mousewheel", onWheel); 
      container.bind("DOMMouseScroll", onWheel); 

      //set target/old/current Y to match current scroll position to prevent jump to top of container 
      targetY = oldY = container.get(0).scrollTop; 
      currentY = -targetY; 

      minScrollTop = container.get(0).clientHeight - container.get(0).scrollHeight; 
      if(options.onRender){ 
       onRenderCallback = options.onRender; 
      } 
      if(options.remove){ 
       log("122","smoothWheel","remove", ""); 
       running=false; 
       container.unbind("mousewheel", onWheel); 
       container.unbind("DOMMouseScroll", onWheel); 
      }else if(!running){ 
       running=true; 
       animateLoop(); 
      } 

     } 
    }); 
}; 


})(jQuery); 

感謝

Answer 1

與您的代碼的問題是，你嘗試應用smoothWheel你的身體DOM。你可以做的是將所有div包裹在另一個div（id="wrapper"）內，並將CSS和JS應用於此div。

HTML

<body> 
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js" type="text/javascript"></script> 
    <script src="http://fatlinesofcode.github.io/jquery.smoothwheel/src/jquery.smoothwheel.js" type="text/javascript"></script> 
    <div id="wrapper"> 
     <div></div> 
     <div></div> 
     <div></div> 
     <div></div> 
     <div></div> 
    </div> 
</body> 

JS

$(document).ready(function(){//alert('1') 
     $("#wrapper").smoothWheel(); 
    }); 

CSS

#wrapper { 
    height:300px; 
    width:100%; 
    overflow:auto; 
    -webkit-overflow-scrolling: touch; 
    background: grey; 
} 

div { 
    height:100px; 
    width:100px; 
    background:lightblue; 
    margin-bottom : 50px; 
} 

這裏是一個Demo FO相同。