Tween algorithm and buffering effects example code implemented in JavaScript

Home

Web Front-end

JS Tutorial

Tween algorithm and buffering effects example code implemented in JavaScript_javascript skills

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

May 16, 2016 pm 03:33 PM

javascript

The example in this article describes the Tween algorithm and buffering effects implemented in JavaScript. Share it with everyone for your reference, the details are as follows:

Here is a demonstration of the Tween algorithm and JavaScript code for buffering special effects. You can use it to create many animation effects such as easing and spring. How to use the Tween algorithm of flash to make the Tween algorithm of js and use it to do some simple things. As for the easing effect, you will understand it after reading this code.

The screenshot of the running effect is as follows:

The online demo address is as follows:

http://demo.jb51.net/js/2015/js-tween-run-style-codes/

The specific code is as follows:

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>Tween</title>
</head>
<body>
<div style="padding-left:50px;">
 <div style="position:relative; border:1px solid #000000; width:550px; height:50px;">
  <div id="idMove" style="width:50px; height:50px; background:#930; position:absolute;"></div>
 </div>
 <div style="position:relative;width:550px;height:200px; margin-top:50px;">
  <div id="idChart" style="border:1px solid #000;height:200px;"> </div>
  <div id="idLine" style="position:absolute;top:0;left:0;height:200px;width:1px;background:#000;"></div>
 </div>
</div>
<div>
 <p> Tween类型： <br />
  <label>
   <input name="vTween" type="radio" value="Linear" checked="checked" />
   Linear </label>
  <label>
   <input name="vTween" type="radio" value="Quad" />
   Quadratic </label>
  <label>
   <input name="vTween" type="radio" value="Cubic" />
   Cubic </label>
  <label>
   <input name="vTween" type="radio" value="Quart" />
   Quartic </label>
  <label>
   <input name="vTween" type="radio" value="Quint" />
   Quintic </label>
  <label>
   <input name="vTween" type="radio" value="Sine" />
   Sinusoidal </label>
  <br />
  <label>
   <input name="vTween" type="radio" value="Expo" />
   Exponential </label>
  <label>
   <input name="vTween" type="radio" value="Circ" />
   Circular </label>
  <label>
   <input name="vTween" type="radio" value="Elastic" />
   Elastic </label>
  <label>
   <input name="vTween" type="radio" value="Back" />
   Back </label>
  <label>
   <input name="vTween" type="radio" value="Bounce" />
   Bounce </label>
 </p>
 <p> ease类型： <br />
  <label>
   <input name="vEase" type="radio" value="easeIn" checked="checked" />
   easeIn </label>
  <label>
   <input name="vEase" type="radio" value="easeOut" />
   easeOut </label>
  <label>
   <input name="vEase" type="radio" value="easeInOut" />
   easeInOut </label>
 </p>
 <input id="idSpeed" type="button" value="减慢速度" />
 <input id="idRun" type="button" value=" Run " />
</div>
<script>
var Tween = {
 Linear: function(t,b,c,d){ return c*t/d + b; },
 Quad: {
 easeIn: function(t,b,c,d){
  return c*(t/=d)*t + b;
 },
 easeOut: function(t,b,c,d){
  return -c *(t/=d)*(t-2) + b;
 },
 easeInOut: function(t,b,c,d){
  if ((t/=d/2) < 1) return c/2*t*t + b;
  return -c/2 * ((--t)*(t-2) - 1) + b;
 }
 },
 Cubic: {
 easeIn: function(t,b,c,d){
  return c*(t/=d)*t*t + b;
 },
 easeOut: function(t,b,c,d){
  return c*((t=t/d-1)*t*t + 1) + b;
 },
 easeInOut: function(t,b,c,d){
  if ((t/=d/2) < 1) return c/2*t*t*t + b;
  return c/2*((t-=2)*t*t + 2) + b;
 }
 },
 Quart: {
 easeIn: function(t,b,c,d){
  return c*(t/=d)*t*t*t + b;
 },
 easeOut: function(t,b,c,d){
  return -c * ((t=t/d-1)*t*t*t - 1) + b;
 },
 easeInOut: function(t,b,c,d){
  if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
  return -c/2 * ((t-=2)*t*t*t - 2) + b;
 }
 },
 Quint: {
 easeIn: function(t,b,c,d){
  return c*(t/=d)*t*t*t*t + b;
 },
 easeOut: function(t,b,c,d){
  return c*((t=t/d-1)*t*t*t*t + 1) + b;
 },
 easeInOut: function(t,b,c,d){
  if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
  return c/2*((t-=2)*t*t*t*t + 2) + b;
 }
 },
 Sine: {
 easeIn: function(t,b,c,d){
  return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
 },
 easeOut: function(t,b,c,d){
  return c * Math.sin(t/d * (Math.PI/2)) + b;
 },
 easeInOut: function(t,b,c,d){
  return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
 }
 },
 Expo: {
 easeIn: function(t,b,c,d){
  return (t==0) &#63; b : c * Math.pow(2, 10 * (t/d - 1)) + b;
 },
 easeOut: function(t,b,c,d){
  return (t==d) &#63; b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
 },
 easeInOut: function(t,b,c,d){
  if (t==0) return b;
  if (t==d) return b+c;
  if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
  return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
 }
 },
 Circ: {
 easeIn: function(t,b,c,d){
  return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
 },
 easeOut: function(t,b,c,d){
  return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
 },
 easeInOut: function(t,b,c,d){
  if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
  return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
 }
 },
 Elastic: {
 easeIn: function(t,b,c,d,a,p){
  if (t==0) return b; if ((t/=d)==1) return b+c; if (!p) p=d*.3;
  if (!a || a < Math.abs(c)) { a=c; var s=p/4; }
  else var s = p/(2*Math.PI) * Math.asin (c/a);
  return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
 },
 easeOut: function(t,b,c,d,a,p){
  if (t==0) return b; if ((t/=d)==1) return b+c; if (!p) p=d*.3;
  if (!a || a < Math.abs(c)) { a=c; var s=p/4; }
  else var s = p/(2*Math.PI) * Math.asin (c/a);
  return (a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b);
 },
 easeInOut: function(t,b,c,d,a,p){
  if (t==0) return b; if ((t/=d/2)==2) return b+c; if (!p) p=d*(.3*1.5);
  if (!a || a < Math.abs(c)) { a=c; var s=p/4; }
  else var s = p/(2*Math.PI) * Math.asin (c/a);
  if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
  return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
 }
 },
 Back: {
 easeIn: function(t,b,c,d,s){
  if (s == undefined) s = 1.70158;
  return c*(t/=d)*t*((s+1)*t - s) + b;
 },
 easeOut: function(t,b,c,d,s){
  if (s == undefined) s = 1.70158;
  return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
 },
 easeInOut: function(t,b,c,d,s){
  if (s == undefined) s = 1.70158; 
  if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
  return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
 }
 },
 Bounce: {
 easeIn: function(t,b,c,d){
  return c - Tween.Bounce.easeOut(d-t, 0, c, d) + b;
 },
 easeOut: function(t,b,c,d){
  if ((t/=d) < (1/2.75)) {
  return c*(7.5625*t*t) + b;
  } else if (t < (2/2.75)) {
  return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
  } else if (t < (2.5/2.75)) {
  return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
  } else {
  return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
  }
 },
 easeInOut: function(t,b,c,d){
  if (t < d/2) return Tween.Bounce.easeIn(t*2, 0, c, d) * .5 + b;
  else return Tween.Bounce.easeOut(t*2-d, 0, c, d) * .5 + c*.5 + b;
 }
 }
}
var $ = function (id) {
 return "string" == typeof id &#63; document.getElementById(id) : id;
};
var Each = function(list, fun){
 for (var i = 0, len = list.length; i < len; i++) { fun(list[i], i); }
};
var fun, iChart = 550, iDuration = 100;
function Move(){
 var oM = $("idMove").style, oL = $("idLine").style, t=0, c=500, d=iDuration;
 oM.left=oL.left="0px"; clearTimeout(Move._t);
 function _run(){
 if(t<d){
  t++;
  oM.left = Math.ceil(fun(t,0,c,d)) + "px";
  oL.left = Math.ceil(Tween.Linear(t,0,iChart,d)) + "px";
  Move._t = setTimeout(_run, 10);
 }else{
  oM.left = c + "px";
  oL.left = iChart + "px";
 }
 }
 _run();
}
function Chart(){
 var a = [];
 for (var i = 0; i < iChart; i++) {
 a.push('<div style="background-color:#f60;font-size:0;width:3px;height:3px;position:absolute;left:' + (i-1) + 'px;top:' + (Math.ceil(fun(i,200,-200,iChart))) + 'px;"><\/div>');
 }
 $("idChart").innerHTML = a.join("");
}
var arrTween = document.getElementsByName("vTween");
var arrEase = document.getElementsByName("vEase");
Each(arrTween, function(o){ o.onclick = function(){ SetFun(); Chart(); } })
Each(arrEase, function(o){ o.onclick = function(){ SetFun(); Chart(); } })
function SetFun(){
 var sTween, sEase;
 Each(arrTween, function(o){ if(o.checked){ sTween = o.value; } })
 Each(arrEase, function(o){ if(o.checked){ sEase = o.value; } })
 fun = sTween == "Linear" &#63; Tween.Linear : Tween[sTween][sEase];
}
$("idRun").onclick = function(){ SetFun(); Chart(); Move(); }
$("idSpeed").onclick = function(){
 if(iDuration == 100){
 iDuration = 500; this.value = "加快速度";
 }else{
 iDuration = 100; this.value = "减慢速度";
 }
}
</script>
</body>
</html>

Copy after login

I hope this article will be helpful to everyone in JavaScript programming.

Statement of this Website

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress images for free

Clothoff.io

AI clothes remover

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)

2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Repo: How To Revive Teammates

4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hello Kitty Island Adventure: How To Get Giant Seeds

4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

How Long Does It Take To Beat Split Fiction?

3 weeks ago By DDD

R.E.P.O. Save File Location: Where Is It & How to Protect It?

3 weeks ago By DDD

Hot Tools

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Where is the login entrance for gmail email?

7337

Java Tutorial

1627

CakePHP Tutorial

1352

Laravel Tutorial

1265

PHP Tutorial

1209

Related knowledge

How to implement an online speech recognition system using WebSocket and JavaScript Dec 17, 2023 pm 02:54 PM

How to use WebSocket and JavaScript to implement an online speech recognition system Introduction: With the continuous development of technology, speech recognition technology has become an important part of the field of artificial intelligence. The online speech recognition system based on WebSocket and JavaScript has the characteristics of low latency, real-time and cross-platform, and has become a widely used solution. This article will introduce how to use WebSocket and JavaScript to implement an online speech recognition system.

WebSocket and JavaScript: key technologies for implementing real-time monitoring systems Dec 17, 2023 pm 05:30 PM

WebSocket and JavaScript: Key technologies for realizing real-time monitoring systems Introduction: With the rapid development of Internet technology, real-time monitoring systems have been widely used in various fields. One of the key technologies to achieve real-time monitoring is the combination of WebSocket and JavaScript. This article will introduce the application of WebSocket and JavaScript in real-time monitoring systems, give code examples, and explain their implementation principles in detail. 1. WebSocket technology

How to implement an online reservation system using WebSocket and JavaScript Dec 17, 2023 am 09:39 AM

How to use WebSocket and JavaScript to implement an online reservation system. In today's digital era, more and more businesses and services need to provide online reservation functions. It is crucial to implement an efficient and real-time online reservation system. This article will introduce how to use WebSocket and JavaScript to implement an online reservation system, and provide specific code examples. 1. What is WebSocket? WebSocket is a full-duplex method on a single TCP connection.

How to use JavaScript and WebSocket to implement a real-time online ordering system Dec 17, 2023 pm 12:09 PM

Introduction to how to use JavaScript and WebSocket to implement a real-time online ordering system: With the popularity of the Internet and the advancement of technology, more and more restaurants have begun to provide online ordering services. In order to implement a real-time online ordering system, we can use JavaScript and WebSocket technology. WebSocket is a full-duplex communication protocol based on the TCP protocol, which can realize real-time two-way communication between the client and the server. In the real-time online ordering system, when the user selects dishes and places an order

Simple JavaScript Tutorial: How to Get HTTP Status Code Jan 05, 2024 pm 06:08 PM

JavaScript tutorial: How to get HTTP status code, specific code examples are required. Preface: In web development, data interaction with the server is often involved. When communicating with the server, we often need to obtain the returned HTTP status code to determine whether the operation is successful, and perform corresponding processing based on different status codes. This article will teach you how to use JavaScript to obtain HTTP status codes and provide some practical code examples. Using XMLHttpRequest

JavaScript and WebSocket: Building an efficient real-time weather forecasting system Dec 17, 2023 pm 05:13 PM

JavaScript and WebSocket: Building an efficient real-time weather forecast system Introduction: Today, the accuracy of weather forecasts is of great significance to daily life and decision-making. As technology develops, we can provide more accurate and reliable weather forecasts by obtaining weather data in real time. In this article, we will learn how to use JavaScript and WebSocket technology to build an efficient real-time weather forecast system. This article will demonstrate the implementation process through specific code examples. We

How to get HTTP status code in JavaScript the easy way Jan 05, 2024 pm 01:37 PM

Introduction to the method of obtaining HTTP status code in JavaScript: In front-end development, we often need to deal with the interaction with the back-end interface, and HTTP status code is a very important part of it. Understanding and obtaining HTTP status codes helps us better handle the data returned by the interface. This article will introduce how to use JavaScript to obtain HTTP status codes and provide specific code examples. 1. What is HTTP status code? HTTP status code means that when the browser initiates a request to the server, the service

How to use insertBefore in javascript Nov 24, 2023 am 11:56 AM

Usage: In JavaScript, the insertBefore() method is used to insert a new node in the DOM tree. This method requires two parameters: the new node to be inserted and the reference node (that is, the node where the new node will be inserted).

See all articles