Javascript String concatenation faster than this example?
javascript, join, performance
Solution
Changing the line:
`sbuffer.push(‘Data comes here... bla... ’); `
to
`sbuffer[sbuffer.length] = ‘Data comes here... bla... ’; `
will give you 5-50% speed gain (depending on browser, in IE - gain will be highest)
Regards.
Problem
I have to concatenate a bunch of Strings in Javascript and am searching for the fastest way to do so. Let's assume that the Javascript has to create a large XML-"file" that, naturally, consists of many small Strings. So I came up with: ``` var sbuffer = []; for (var idx=0; idx<10000; idx=idx+1) { sbuffer.push(‘<xmltag>Data comes here... bla... </xmltag>’); } // Now we "send" it to the browser... alert(sbuffer.join(”)); ``` Do not pay any attention to the loop or the other "sophisticated" code which builds the example. My question is: For an unknown number of Strings, do you have a faster algorithm / method / idea to concatenate many small Strings to a huge one?