首先來(lái)看看接口說(shuō)明：
var _rotate = new iRotate('#div',{ start : 0, //開(kāi)始角度，可不寫(xiě)，默認(rèn)0 end :45, //結(jié)束角度 time :5000, //持續(xù)時(shí)間，可不寫(xiě)，默認(rèn)1000 easing : 'easeOut', //動(dòng)畫(huà)形式，目前只有'linear'和'easeOut'兩種，可不寫(xiě)，默認(rèn)'easeOut' callback : function(){ //回調(diào)函數(shù) //this為當(dāng)前對(duì)象 }});_rotate.stop(function(){ //停止回調(diào)函數(shù) //this為當(dāng)前對(duì)象});實(shí)現(xiàn)的效果圖如下：
完整的示例代碼如下：
<!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=utf-8" /><title>簡(jiǎn)單轉(zhuǎn)盤(pán)效果</title><style>#RotateDiv{border-radius:50px 0 50px 50px }#RotateDiv,#RotateDiv2{ width: 50px;height: 50px; color: #fff;text-align: center; line-height: 50px; background: #444; position: relative; margin: 20px;border-radius:50px 0 50px 50px}</style></head><body><p>舉例子：</p><p> <button id="RotateBtn">開(kāi)始抽獎(jiǎng)</button> </p><div id="RotateDiv"></div><p>默認(rèn)轉(zhuǎn)動(dòng)：</p><p> <button id="RotateBtn2">開(kāi)始抽獎(jiǎng)2</button> </p><div id="RotateDiv2"></div><script type="text/javascript">window.iRotate = (function(w,d){ function R(obj,json){ this.obj = (typeof obj=='object') ? obj : d.querySelector(obj); this.startTime = Date.now(); this.timer = null; this.rotate(json); }; R.prototype = { rotate : function(json){ var t = this,times = json['time'] || 1000; clearInterval(t.timer) t.timer = setInterval(function(){ var changeTime = Date.now(), tm = times - Math.max(0,t.startTime - changeTime + times), value = Tween[json['easing'] || 'easeOut'](tm,+json['start'] || 0,json['end'] - (+json['start'] || 0),times); t.obj.style['transform'] = t.obj.style['-webkit-transform'] = 'rotate('+value%360+'deg)'; t.obj.setAttribute('data-rotate',value%360) if(tm==times){ clearInterval(t.timer); json.callback && json.callback.call(t.obj) } },10) }, stop : function(fn){ clearInterval(this.timer); fn && fn.call(this.obj) } }; return R;})(window,document);var Tween = {linear: function (t, b, c, d){return c*t/d + b;},easeOut: function(t, b, c, d){return -c *(t/=d)*(t-2) + b;}}//默認(rèn)轉(zhuǎn)動(dòng);(function(){ var off = true,off2 = true; RotateBtn.onclick = function(){ if(!off) return //判斷是否在旋轉(zhuǎn) off = false new iRotate('#RotateDiv',{ end :45+1800, time :5000, callback : function(){ //回調(diào)函數(shù) this.innerHTML = this.getAttribute('data-rotate') off = true } }); } var r = null; function rotate2(){ //遞歸持續(xù)旋轉(zhuǎn) r = new iRotate('#RotateDiv2',{ start : 0, end :360, time :1000, easing : 'linear', callback : function(){ rotate2() } }); } rotate2() RotateBtn2.onclick = function(){ if(!off2) return //判斷是否在旋轉(zhuǎn) off2 = false r.stop(); //停止之前的旋轉(zhuǎn) new iRotate('#RotateDiv2',{ start : RotateDiv2.getAttribute('data-rotate'), end :65+1800, time :5000, callback : function(){ //回調(diào)函數(shù) this.innerHTML = this.getAttribute('data-rotate') off2 = true } }); }})(); </script></body></html>總結(jié)
以上就是這篇文章的全部?jī)?nèi)容了，希望本文的內(nèi)容對(duì)大家的學(xué)習(xí)或者工作能帶來(lái)一定的幫助，如果有疑問(wèn)大家可以留言交流。
新聞熱點(diǎn)
疑難解答
圖片精選
網(wǎng)友關(guān)注
