canvas 等比例压缩图片
// 图片压缩,默认同比例压缩 compressImg (URL, callback) { // 生成canvas let canvas = document.createElement('canvas') let ctx = canvas.getContext('2d') let image = new Image() image.setAttribute('crossOrigin', 'anonymous') image.src = URL let quality = 0.3 image.onload = () => { canvas.width = image.width canvas.height = image.height ctx.drawImage(image, 0, 0, canvas.width, canvas.height) let newImageData = canvas.toDataURL('image/jpeg', quality) callback(newImageData) } }
【推荐】编程新体验,更懂你的AI,立即体验豆包MarsCode编程助手
【推荐】凌霞软件回馈社区,博客园 & 1Panel & Halo 联合会员上线
【推荐】抖音旗下AI助手豆包,你的智能百科全书,全免费不限次数
【推荐】轻量又高性能的 SSH 工具 IShell:AI 加持,快人一步