<view class="content"> <text class="every" decode="{{true}}" style="right:{{announZf}}{{announNum}}px">{{announ}}</text></view>

export default class ShopIndex extends wepy.page { config = {  navigationBarTitleText : '首頁', } data = {  // 公告內容  announ : '超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度超長度v',  announNum : 0,  announy : 280,  announZf : '-' } onLoad() {    let self = this;  var query = wepy.createSelectorQuery();  query.select('.content').boundingClientRect(ContentRes => {   var query = wepy.createSelectorQuery();   query.select('.every').boundingClientRect(TextRes => {    //加上一百是因為防止在歸零時出現閃爍的情況    let maxContentWidth = ContentRes.width + 100,    maxTextWidth = TextRes.width;    //初始化    self.announNum = TextRes.width    self.$apply();    //定時器    setInterval(()=>{     if(self.announZf == '-') {      if(self.announNum <= 0) {       self.announZf = ''      } else {       self.announNum -= 1      }     } else {      if(self.announNum > (maxContentWidth)) {       //歸位       self.announZf = '-'       self.announNum = maxTextWidth      } else {       self.announNum += 1      }     }      self.$apply();        },5)   }).exec();  }).exec(); } }