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- export default Behavior({methods:{getRect(e,t=!1){return new Promise((r,o)=>{const s=wx.createSelectorQuery().in(this);(t?s.selectAll(e):s.select(e)).boundingClientRect(e=>{if(!e)return o("找不到元素");r(e)}).exec()})},queryScrollNode(e,t,r="width"){if(t<0)return;const o=e[t];this.getRect(".l-tabsscroll").then(s=>{if(!s)return console.error("找不到元素");const c=s[r];let n=e.slice(0,t).reduce((e,t)=>e+t[r],0);n+=(o[r]-c)/2,"width"===r?this.setData({transformX:n,transformY:0}):this.setData({transformX:0,transformY:n})}).catch(e=>{console.error(e)})},queryMultipleNodes(){const{placement:e,currentIndex:t}=this.data;this.getRect(".l-tabs-item",!0).then(r=>{-1!==["top","bottom"].indexOf(e)?this.queryScrollNode(r,t):this.queryScrollNode(r,t,"height")}).catch(e=>{console.error(e)})}}});
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