Fast way to concatenate strings in nodeJS JavaScript

Question

I understand that doing something like  var a    hello   a      world     It is relatively very slow  as the browser does that in O n    Is there a faster way of doing so without installing new libraries

User · Answer

You asked about performance  See this perf test comparing  concat       and  join  - in short the   operator wins by far

User · Answer

The question is already answered  however when I first saw it I thought of NodeJS Buffer  But it is way slower than the    so it is likely that nothing can be faster than   in string concetanation   Tested with the following code   function a        var s    hello       var p    world       s   s   p      return s     function b        var s   new Buffer  hello        var p   new Buffer  world        s   Buffer concat  s p        return s     var times   100000   var t1   new Date    for  var i   0  i  lt  times  i         a       var t2   new Date    console log  Normal took       t2-t1      ms     for   var i   0  i  lt  times  i         b       var t3   new Date     console log  Buffer took       t3-t2      ms       Output    Normal took  4 ms  Buffer took  458 ms

User · Answer

There is not really any other way in JavaScript to concatenate strings  You could theoretically use  concat    but that s way slower than just    Libraries are more often than not slower than native JavaScript  especially on basic operations like string concatenation  or numerical operations   Simply put    is the fastest

[javascript] Fast way to concatenate strings in nodeJS/JavaScript

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