在插件里面获取元素的宽度报错： wxml： <image class="section1-image" src="{{saasOb.cropImage}}" bindload="imageLoad" id="section1Image" /> js： imageLoad: function(e) { //选择id var that = this; const query = wx.createSelectorQuery() query.select('#section1Image').boundingClientRect() query.selectViewport().scrollOffset() query.exec(function (res) { console.log(JSON.stringify(res)) res[0].width console.log("rect.width:" +res[0].width) that.setData({ // height: rect.width + 'px' imageWidth: res[0].width * 2 }) }) }, Consolo： [null,{"id":"","dataset":{},"scrollLeft":0,"scrollTop":0,"scrollWidth":379,"scrollHeight":635}] thirdScriptError Cannot read property 'width' of null;at SelectorQuery callback function TypeError: Cannot read property 'width' of null