This should play if your Web browser has WebAssembly enabled (most do). Most examples will play unless they need to load files. The first time you click Play, Csound will spend a few seconds loading, then play. You can edit this code and replay it.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform -n ;;;no sound output ;-iadc ;;;uncomment -iadc if realtime audio input is needed too </CsOptions> <CsInstruments> ; Required settings for WebAudio: sr = 48000 ksmps = 128 nchnls = 2 nchnls_i = 1 ;example of Joachim Heintz opcode FilSuf, S, So ;returns the suffix of a filename or path, optional in lower case Spath,ilow xin ipos strrindex Spath, "." ;look for the rightmost '.' Suf strsub Spath, ipos+1 ;extract the substring after "." if ilow != 0 then ;if ilow input is not 0 then Suf strlower Suf ;convert to lower case endif xout Suf endop instr suff ilow = p4 prints "Printing suffix:\n" Suf FilSuf "/my/dir/my/file.WAV", ilow puts Suf, 1 endin </CsInstruments> <CsScore> i "suff" 0 1 0 ;do not convert to lower case i "suff" 3 1 1 ;convert to lower case e </CsScore> </CsoundSynthesizer>