Node js printing to console without a trailing newline

Question

Is there a method for printing to the console without a trailing newline  The console object documentation doesn t say anything regarding that   console log   Prints to stdout with newline  This function can take multiple arguments in a printf  -like way  Example  console log  count   d   count    If formating elements are not found in the first string then util inspect is used on each argument

User · Answer

In Windows console  Linux  too   you should replace   r  with its equivalent code  033 0G   process stdout write  ok 033 0G      This uses a VT220 terminal escape sequence to send the cursor to the first column

User · Answer

There seem to be many answers suggesting   process stdout write   Error logs should be emitted on   process stderr   Instead use   console error   For anyone who is wonder why process stdout write   033 0G    wasn t doing anything it s because stdout is buffered and you need to wait for drain event  more info     If write returns false it will fire a drain event

User · Answer

You can use process stdout write     process stdout write  hello        See the docs for details

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Also  if you want to overwrite messages in the same line  for instance in a countdown  you could add   r  at the end of the string   process stdout write  Downloading     data length     bytes r

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As an expansion enhancement to the brilliant addition made by  rodowi above regarding being able to overwrite a row   process stdout write  Downloading     data length     bytes r      Should you not want the terminal cursor to be located at the first character  as I saw in my code  the consider doing the following   let dots      process stdout write  Loading     let tmrID   setInterval      gt      dots          process stdout write   rLoading   dots       1000   setTimeout      gt      clearInterval tmrID    console log   rLoaded in  3500 ms       3500    By placing the  r in front of the next print statement the cursor is reset just before the replacing string overwrites the previous

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I got the following error when using strict mode      Node error   Octal literals are not allowed in strict mode     The following solution works  source    process stdout write  received      bytesReceived     x1B 0G

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util print can be used also  Read  http   nodejs org api util html util util print     util print           A synchronous output function  Will block the process  cast each argument to a string then  output to stdout  Does not place newlines after each argument    An example      get total length var len   parseInt response headers  content-length    10   var cur   0      handle the response response on  data   function chunk      cur    chunk length    util print  Downloading      100 0   cur   len  toFixed 2           cur     bytes r

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None of these solutions work for me  process stdout write  ok 033 0G   and just using   r  just create a new line but don t overwrite on Mac OSX 10 9 2   EDIT   I had to use this to replace the current line   process stdout write   033 0G    process stdout write  newstuff

[node.js] Node.js: printing to console without a trailing newline?

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