前端如何把图片url地址https://url转成base64

  • 一、直接上代码

一、直接上代码

async getImgImg() {let url = await this.base64(this.From.imageData)}base64(url) { return new Promise(resolve => { const image = new Image() // 先设置图片跨域属性 image.crossOrigin = 'Anonymous' // 再给image赋值src属性,先后顺序不能颠倒 image.src = url image.onload = function () { const canvas = document.createElement('CANVAS') // 设置canvas宽高等于图片实际宽高 canvas.width = image.width canvas.height = image.height canvas.getContext('2d').drawImage(image, 0, 0) // toDataUrl可以接收2个参数,参数一:图片类型,参数二: 图片质量0-1(不传默认为0.92) const dataURL = canvas.toDataURL('image/jpeg') resolve(dataURL) } image.onerror = () => { resolve({ message: '相片处理失败' }) } })},

链接: https://blog.csdn.net/weixin_63537474/article/details/133380515