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> </CsOptions> <CsInstruments> ; Required settings for WebAudio: sr = 48000 ksmps = 128 nchnls = 2 nchnls_i = 1 ;run this example in CsoundQt, a Csound editor that provides widgets ;make the Widgets-panel visible, by clicking the Widgets symbol in the menu or pressing (Alt+1). ; sr = 44100 ; ksmps = 32 ; nchnls = 2 0dbfs = 1 ; written by Alex Hofmann instr 1 ;move fader kMoveUp linseg 0, 3, 1, 1, 1, 0.5, 0 outvalue "movefader", kMoveUp endin </CsInstruments> <CsScore> i 1 0 5 e </CsScore> </CsoundSynthesizer>