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
ifstream
wishes for the calling code to wait for the'drain'
event to be emitted before continuing to write additional data; otherwisetrue
.
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
.