JavaScript 实现缓冲结果演示大汇总

发布时间：2018-09-01 15:05:19 所属栏目：运营来源：站长网

导读：作者将45种可用于网页上的 Java Script缓冲结果荟萃于一个整体实例中，鼠标点击某个缓冲的名字，就能看到该缓冲的结果，很服气作者的程度，研究JS的伴侣，必然要商议一下，见到高人了作者：司徒正美，许多人都知道的，在博客园等多个知名网站开了博客，在

　　作者将45种可用于网页上的JavaScript缓冲结果荟萃于一个整体实例中，鼠标点击某个缓冲的名字，就能看到该缓冲的结果，很服气作者的程度，研究JS的伴侣，必然要商议一下，见到高人了………………

　　作者：司徒正美，许多人都知道的，在博客园等多个知名网站开了博客，在WEB前端等方面有独道的工夫。

　　博客：http://www.cnblogs.com/rubylouvre/

　　演示：

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0 : pos > 1 ? 1 : pos); }, wobble: function(pos) { return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5; }, pulse: function(pos, pulses) { return (-Math.cos((pos*((pulses||5)-.5)*2)*Math.PI)/2) + .5; }, blink: function(pos, blinks) { return Math.round(pos*(blinks||5)) % 2; }, spring: function(pos) { return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6)); }, none: function(pos){ return 0 }, full: function(pos){ return 1 } } var _ = function(id){ return document.getElementById(id); } var transition = function(el){ el.style.position = "absolute"; var options = arguments[1] || {}, begin = options.begin, change = options.change, duration = options.duration || 500, field = options.field, ftp = options.ftp || 50, onEnd = options.onEnd || function(){}, ease = options.ease, end = begin + change, startTime = new Date().getTime(); (function(){ setTimeout(function(){ var newTime = new Date().getTime(), timestamp = newTime - startTime, delta = ease(timestamp / duration); el.style[field] = Math.ceil(begin + delta * change) + "px" if(duration <= timestamp){ el.style[field] = end + "px"; onEnd(); }else{ setTimeout(arguments.callee,1000/ftp); } },1000/ftp) })() } if (typeof Array.prototype['max'] == 'undefined') { Array.prototype.map = function(fn, thisObj) { var scope = thisObj || window; var a = []; for ( var i=0, j=this.length; i < j; ++i ) { a.push(fn.call(scope, this[i], i, this)); } return a; }; Array.prototype.max = function(){ return Math.max.apply({},this) } Array.prototype.min = function(){ return Math.min.apply({},this) } } var range = function(start,end){ var _range = [] for(var i = start,l=end-start;i<l;i++){ _range.push(i) } return _range } var draw = function(ease){ var demo = _("transition"); demo.innerHTML = "";//还原！ //***********绘制节制台******************** var values = range(0,200).map(function(v){ return tween[ease](v/200) * 200; }), max = Math.max(200, values.max()), min = Math.min(0, values.min()); if (min==max) { min = 0; max = 200; } var factor = 200/(max-min), grid = '<span style="bottom:'+Math.round((0-min)*factor)+'px">0</span>'+ '<span style="bottom:'+Math.round((200-min)*factor)+'px">1</span>', graph = range(0,200).map(function(v){ return '<div style="left:'+v+'px;bottom:'+Math.round((values[v]-min)*factor)+'px;height:1px"></div>'; }).join('') + '<div id="indicator" style="display:none">' +'</div><div id="marker" style="display:none"></div><div id="label"></div>'; demo.innerHTML = grid + graph; var indicator = _("indicator"), marker = _("marker"), label = _("label"), demoTransition = function(pos){ var value = tween[ease](pos); indicator.style.display = "block"; marker.style.display = "block"; marker.style.left = Math.round((pos*200))+'px'; marker.style.bottom = Math.round(((value*200)-min)*factor)+'px'; label.innerHTML = Math.round((pos*200))+'px'; return value; } transition(indicator,{field:"left",begin:parseFloat(getCoords(demo).left),change:200, ease:demoTransition}) } window.onload = function(){ var panelHTML = function(){ var builder = []; var _temp = 'Back Circ Cubic Expo Quad Quart Quint Sine'.split(' '); var ease = _temp.map(function(v){ return 'easeIn'+v; }); ease = ease.concat(_temp.map(function(v){ return 'easeOut'+v; })); ease = ease.concat(_temp.map(function(v){ return 'easeInOut'+v; })); ease = ease.concat('blink bounce bouncePast easeFrom easeFromTo easeOutBounce easeTo elastic'.split(' ')); ease = ease.concat('flicker full linear mirror none pulse reverse sinusoidal spring swingTo swingFrom swingFromTo wobble'.split(' ')) for(var i =0,l=ease.length;i<l;i++){ builder.push("<div onclick='draw(this.innerHTML)'>"); builder.push(ease[i]); builder.push("</div>"); } return builder.join(''); } var panel = document.createElement("div"); panel.id = "panel" panel.innerHTML = panelHTML(); _("transition").parentNode.insertBefore(panel,_("transition").nextSibling); } </script> <title>45种JavaScript缓冲结果荟萃演示</title> </head> <body> <div class="taxiway"> <div class="move" onclick="transition(this,{field:'left',begin:parseFloat(getCoords(this).left),change:700,ease:tween.bouncePast})"></div> </div> <div class="taxiway"> <div class="move" onclick="transition(this,{field:'width',begin:parseFloat(getStyle(this,'width')),change:300,ease:tween.spring})"></div> </div> <span class="clear"></span> <h2>请点击下表的格子</h2> <div id="transition" class="transition"> </div> </body> </html> <br /><center>如不能表现结果，请按Ctrl+F5革新本页，更多网页代码：<a href='http://www.veryhuo.com/' target='_blank'>http://www.veryhuo.com/</a></center>
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