writeStream.clearLine(dir[, callback])
dir
<number>-1
: 从光标向左。1
: 从光标向右。0
: 整行。
callback
<Function> 当操作完成时调用。- 返回: <boolean> 如果流期望调用的代码在继续写入其他数据之前等待
'drain'
事件触发,则为false
,否则为true
。
writeStream.clearLine()
会以 dir
指定的方向清理此 WriteStream
的当前行。
dir
<number>-1
: to the left from cursor1
: to the right from cursor0
: the entire line
callback
<Function> Invoked once the operation completes.- Returns: <boolean>
false
if the stream wishes for the calling code to wait for the'drain'
event to be emitted before continuing to write additional data; otherwisetrue
.
writeStream.clearLine()
clears the current line of this WriteStream
in a
direction identified by dir
.