# file 工具集

文件相关操作工具在 @/utils/designUtil

# selectFiles

选择文件

accept:文件类型,multiple:是否可多选

import { selectFiles } from '@/utils/designUtil'
selectFiles({accept: '.png', multiple: false}).then((fileList) => {
    
})

# getImgStr

获取图片base64

import { selectFiles,getImgStr } from '@/utils/designUtil'
selectFiles({accept: '.png', multiple: false}).then((fileList) => {
    for (const file of Array.from(fileList)) { 
        const str = getImgStr(file)
        console.log('获取到的base64',str)
    }
})

# downFile

前端下载文件

# getFileExt

获取文件后缀

# checkFileExt

判断文件类型是否在列表内

# toArrayBuffer

file转buffer