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 let imgArray = ['img1.png', 'img2.png']; let receiveArray = new Array(); let $myContent = document.getELmentById("myContent"); let {imgW, imgH} = {300, 300}; let Canvas = document.createElement('canvas'); let ctx = Canvas.getContext("2d"); let scaleBy = 2; Canvas.width = imgW * scaleBy; Canvas.height= imgH * scaleBy; imgArray.forEach((e, idx) => { let img = new Image(); img.src = e; e.addEventListener('load', () => { ctx.drawImage(img, 0, 0, imgW * scaleBy, imgH * scaleBy); let imgCont = new Image(); imgCont.src = Canvas.toDataURL(); imgCont.id = 'img' + idx; receiveArray.push(imgCont); // 将绘制的img节点收集到数组里，这里的顺序可能和imgArray的顺序不一样 if (receiveArray.length === imgArray.length) { //所有图片load并绘制完成 let sortArr = new Array(); receiveArray.forEach(ex => { //将所有绘制图片按imgArray顺序排序 sortArr[ex.id.split('img')[1]] = ex; }) sortArr.forEach(ex2 => { $myContent.appendChild(ex2) }) } }) })