Deno.writefile

writeFile

• writeFile(path: string, data: Uint8Array, options?: WriteFileOptions): Promise<void>

• • 定义在 lib.deno.ns.d.ts:2010

  将 data 写入给定的 path，并且根据需要创建新文件或者覆盖原文件。

  Write data to the given path, by default creating a new file if needed, else overwriting.

    const encoder = new TextEncoder();
    const data = encoder.encode("Hello world\n");
    await Deno.writeFile("hello1.txt", data);  // 覆盖或者创建 "hello1.txt"
    await Deno.writeFile("hello2.txt", data, {create: false});  // 仅当 "hello2.txt" 存在的情况下才有效
    await Deno.writeFile("hello3.txt", data, {mode: 0o777});  // 设置新文件的权限
    await Deno.writeFile("hello4.txt", data, {append: true});  // 在文件末尾添加数据
  

  需要 allow-write 权限。如果 options.create 为 false 且需要 allow-read 权限。

  Requires allow-write permission, and allow-read if options.create is false.

参数

-   ##### path: string

-   ##### data: Uint8Array

-   ##### Optional options: [WriteFileOptions](interfaces/deno.writefileoptions.html)

返回 Promise<void>