最近閑來(lái)無(wú)事,做了一個(gè)多宮格抽獎(jiǎng)的例子,有什么需要改進(jìn)或者錯(cuò)誤的地方,請(qǐng)留言,謝謝
首先看效果
思路是先讓其轉(zhuǎn)動(dòng)2圈多,然后再進(jìn)行抽獎(jiǎng),格子運(yùn)動(dòng)用的是setTimeout,讓其運(yùn)行的時(shí)間間隔不一樣,然后產(chǎn)生運(yùn)動(dòng)快慢的效果
好了,上代碼
首先是WXML(這里面的判斷可能有些繞,仔細(xì)按順序看,因其第五個(gè)和第十一個(gè)格子在不同手機(jī)屏幕大小上的顯示有問(wèn)題,所以再次給它們判斷了一下)
<view class="box"> <view class="boxsub {{luckynum==index?'luck':''}}" wx:for='{{box}}' style="{{index>0&&index<4?'top:0;left:'+index*140+'rpx;':(index>3&&index<8?'right:0;top:'+((index-4)*100)+'rpx;':(index>7&&index<12?'bottom:0;right:'+(index-7)*140+'rpx;':(index>11&&index<14?'left:0;bottom:'+(index-11)*100+'rpx;':'')))}} {{index=='4'?'top:0;':''}} {{index=='11'?'left:0;':''}} " wx:key=''> <text class='boxcontent' style='{{item.name.length>6?"line-height:40rpx;margin-top:10rpx;":"line-height:100rpx;"}}'>{{item.name}}</text> </view> <view class="lucky" catchtap="luckyTap"> <text class="taplucky">點(diǎn)擊抽獎(jiǎng)</text> <text class="howMany">您還有<text class="howMany_num" >{{howManyNum}}</text>次抽獎(jiǎng)機(jī)會(huì)</text> </view> </view> <view class="explain"> </view>
WXSS:
.box{ margin:20rpx 25rpx; height: 400rpx; width: 698rpx; /*border:1px solid #ddd;*/ position: relative; /*box-sizing: border-box;*/} .boxsub{ width: 140rpx; height: 100rpx; /*border: 1px solid #f00;*/ box-sizing: border-box; position: absolute; background: #ff6100; border: 1rpx solid #fff; } .boxcontent{ text-align: center; font-size: 26rpx; display: block; color: #fff; } .lucky{ width: 300rpx; height:130rpx; background:#ff6100;/* #ff6100;007FFF*/ position: absolute; left: 0; bottom: 0; right: 0; top: 0rpx; margin: auto; } .lucky:active{ opacity: 0.7; } .taplucky{ display: block; text-align: center; font-size: 30rpx; line-height: 50rpx; height: 50rpx; color: #fff; margin-top: 20rpx; } .howMany{ display: block; text-align: center; font-size: 26rpx; color: #fff; line-height: 40rpx; height: 40rpx; } .howMany_num{ color:#007FFF; font-size:32rpx; line-height:40rpx; padding:0 10rpx; } .luck{ opacity: 0.5; background: #ff6100; }
JS
var time = null;//setTimeout的ID,用clearTimeout清除Page({ data: { box: [{ name:'100積分' }, { name: '10元優(yōu)惠券\n滿100可用' }, { name: '60積分' }, { name: '30積分' }, { name: '50積分' }, { name: '30元優(yōu)惠券\n滿120可用' }, { name: '100積分' }, { name: '200積分' }, { name: '10積分' }, { name: '50積分' }, { name: '40積分' }, { name: '50優(yōu)惠券滿500可用' }, { name: '60積分' }, { name: '70積分' }], luckynum:0,//當(dāng)前運(yùn)動(dòng)到的位置,在界面渲染 howManyNum:10,//抽獎(jiǎng)的剩余次數(shù) content:{ index: 0, //當(dāng)前轉(zhuǎn)動(dòng)到哪個(gè)位置,起點(diǎn)位置 count: 0, //總共有多少個(gè)位置 speed: 50, //初始轉(zhuǎn)動(dòng)速度 cycle: 3*14, //轉(zhuǎn)動(dòng)基本次數(shù):即至少需要轉(zhuǎn)動(dòng)多少次再進(jìn)入抽獎(jiǎng)環(huán)節(jié),這里設(shè)置的是轉(zhuǎn)動(dòng)三次后進(jìn)入抽獎(jiǎng)環(huán)節(jié) }, prize:0,//中獎(jiǎng)的位置 luckytapif:true//判斷現(xiàn)在是否可以點(diǎn)擊 }, //點(diǎn)擊抽獎(jiǎng) luckyTap:function(){ var i=0, that=this, howManyNum = this.data.howManyNum,//剩余的抽獎(jiǎng)次數(shù) luckytapif = this.data.luckytapif,//獲取現(xiàn)在處于的狀態(tài) luckynum = this.data.luckynum,//當(dāng)前所在的格子 prize =Math.floor(Math.random()*14) ;//中獎(jiǎng)序號(hào),隨機(jī)生成 if (luckytapif && howManyNum>0){//當(dāng)沒(méi)有處于抽獎(jiǎng)狀態(tài)且剩余的抽獎(jiǎng)次數(shù)大于零,則可以進(jìn)行抽獎(jiǎng) console.log('prize:'+prize); this.data.content.count=this.data.box.length; this.setData({ howManyNum:howManyNum-1//更新抽獎(jiǎng)次數(shù) }); this.data.luckytapif=false;//設(shè)置為抽獎(jiǎng)狀態(tài) this.data.prize = prize;//中獎(jiǎng)的序號(hào) this.roll();//運(yùn)行抽獎(jiǎng)函數(shù) } else if (howManyNum == 0 && luckytapif){ wx.showModal({ title: '', content: '您的抽獎(jiǎng)次數(shù)已經(jīng)沒(méi)有了', showCancel:false }) } },//抽獎(jiǎng) roll:function(){ var content=this.data.content, prize = this.data.prize,//中獎(jiǎng)序號(hào) that=this; if (content.cycle - (content.count-prize)>0){//最后一輪的時(shí)間進(jìn)行抽獎(jiǎng) content.index++; content.cycle--; this.setData({ luckynum: content.index%14 //當(dāng)前應(yīng)該反映在界面上的位置 }); setTimeout(this.roll, content.speed);//繼續(xù)運(yùn)行抽獎(jiǎng)函數(shù) }else{ if (content.index < (content.count*3 + prize)){//判斷是否停止 content.index++; content.speed += (550 /14);//最后一輪的速度,勻加速,最后停下時(shí)的速度為550+50 this.data.content=content; this.setData({ luckynum: content.index % 14 }); console.log(content.index, content.speed);//打印當(dāng)前的步數(shù)和當(dāng)前的速度 setTimeout(this.roll,content.speed); }else{ //完成抽獎(jiǎng),初始化數(shù)據(jù) console.log('完成'); content.index =0; content.cycle = 3 * 14; content.speed = 50; this.data.luckytapif = true; clearTimeout(time); wx.showModal({ title: '', content: '恭喜你抽到了'+that.data.box[prize].name, showCancel:false }) } } }, onLoad: function (options) { }, onReady: function () { }, onShow: function () { }, onHide: function () { }, onUnload: function () { } })
完結(jié)。
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http://www.cnblogs.com/xjwy/p/7215989.html