- let fs =require("fs");
- let paht =require("path");
- fs.open(paht.join(__dirname,"a.txt"),"w",(err,fd)=>{
- let buf = Buffer.from("天蓝蓝. 海蓝蓝");
- /*
- * buf 指的是读取的 buffer
- * 0 从 buffer 哪个位置读取
- * 4 读取多少个 buffer 往里写
- * 0 从文件哪个位置写入
- * bytesWritten 实际写入的个数
- * */
- fs.write(fd,buf,0,4,0,(err,bytesWritten)=>{
- console.log("写入成功")
- });
- });
来源: http://www.bubuko.com/infodetail-2738504.html