js 图片转base64格式

奥特曼老师

已于 2024-03-29 16:44:25 修改

阅读量250

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文章标签： javascript 前端

于 2024-03-29 15:58:40 首次发布

本文链接：https://blog.youkuaiyun.com/Principal_Z/article/details/137148192

版权

export const getImgSrc = (IMG: any) => new Promise(resolve => {
    const img = new Image()
    img.crossOrigin = ''
    img.src = IMG
    img.onload = () => {
        const canvas = document.createElement('canvas')
        canvas.width = img.width
        canvas.height = img.height
        const ctx = canvas.getContext('2d')
        ctx?.drawImage(img, 0, 0, img.width, img.height)
        const ext = img.src.substring(img.src.lastIndexOf('.') + 1).toLowerCase()
        // eslint-disable-next-line prefer-template
        const dataURL = canvas.toDataURL('image/' + ext)
        resolve(dataURL)
    }
})