js用策略思维做的小球滑动
用策略思维做的小球滑动 <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> </head> <body> <div style="position:absolute;background:blue" id="div">我是div</div> </body> <script> var tween = { linear: function (t, b, c, d) { return c * t / d + b; }, easeIn: function (t, b, c, d) { return c * (t /= d) * t + b; }, strongEaseIn: function (t, b, c, d) { return c * (t /= d) * t * t * t * t + b; }, strongEaseOut: function (t, b, c, d) { return c * ((t = t /