前端如何把图片url地址https://url转成base64

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前端如何把图片url地址https://url转成base64

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

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