readline.clearLine(stream, dir[, callback])


  • stream <stream.Writable>

  • dir <number>

    • -1:从光标向左

      ¥-1: to the left from cursor

    • 1:从光标向右

      ¥1: to the right from cursor

    • 0:整行

      ¥0: the entire line

  • callback <Function> 操作完成后调用。

    ¥callback <Function> Invoked once the operation completes.

  • 返回:<boolean> false(如果 stream 希望调用代码在继续写入附加数据之前等待 'drain' 事件触发);否则 true

    ¥Returns: <boolean> false if stream wishes for the calling code to wait for the 'drain' event to be emitted before continuing to write additional data; otherwise true.

readline.clearLine() 方法在 dir 标识的指定方向上清除给定 TTY 流的当前行。

¥The readline.clearLine() method clears current line of given TTY stream in a specified direction identified by dir.