Need help on how to create sequential timed functions

[DuckyMoon]

Hey everyone,<br>I'm trying to get an answer to this question, since I am on a &quot;can we have that yesterday&quot; timetable to get this site up.&nbsp;&nbsp;Hope someone can help me!!<br><br>I'm trying to write a Javascript function that will play a succession of notes using Beatnik. The pitch of the notes is computed from variable (pc) passed to the function as arguments. My problem is timing the notes.&nbsp;&nbsp;In my current version (see below) the notes play simultaneously. I tried nesting a function call for the playNote statement as the first argument to the setTimeout functions, but then notes still play all together.<br><br>So what I want to do is play each note in succession with a specific delay in between notes. Any suggestions?<br><br>function playline (pc1, pc2, pc3) {<br>pitch1 = pc1 + 60<br>pitch2 = pc2 + 60<br>pitch3 = pc3 + 60<br><br>notePlayer.playNote (1,0,24,pitch1,127,1000)<br>&nbsp;&nbsp;setTimeout(&quot;&quot;,1000)<br>notePlayer.playNote (1,0,24,pitch2,127,1000)<br>&nbsp;&nbsp;setTimeout(&quot;&quot;,2000)<br>notePlayer.playNote (1,0,24,pitch3,127,1000)<br>;<br>}<br>I hope that makes sense!&nbsp;&nbsp;Thanks <br>

 

[theEclipse]

try this instead:<br><br>notePlayer.playNote(1,0,24,pitch1,127,1000);<br>setTimeout(&quot;notePlayer.playNote(1,0,24,pitch2,127,1000)&quot;,1000);<br>setTimeout(&quot;notePlayer.playNote(1,0,24,pitch3,127,1000)&quot;,2000);<br><br>when you say setTimeout(...), javascript waits the specifyed number of miliseconds, and then executes the code in the quotes. untill the time is up, javascript continues normally.<br><br>the way you are using the setTimeout is incorrect.<br><br>in the example above:<br>1) the first note command is read, and is played instantly<br>2) javascript sees the setTimeout command for the second note, but with a one-second delay. It loads that command into a timer, which executes it when the time is up<br>3) javascript sees the setTimeout command for the third note, also with a delay. this time, the delay is two seconds. Javascript stores this command into yet another timer, which will execute this command when the two seconds is up.<br><br>one second later:<br>the command in the first timer fires, playing the second note. while this command is executing, all other scripting is stopped, as javascript can only process one command at a time.<br><br>another second later (two total seconds):<br>the command in the second timer fires, playing the third note. the same goes for this command, as for the one-second delay.<br><br>I hope I didn't confuse you. the code at the top should work. <p>theEclipse<br><a href=mailto:eclipse_web@hotmail.com>eclipse_web@hotmail.com</a><br><a href=robacarp.webjump.com>robacarp.webjump.com</a><br>**-Trying to build a documentation of a Javascript DOM, crossbrowser, of course. E-mail me if you know of any little known events and/or methods, etc.

 

[DuckyMoon]

Thank you SO much for taking the time to help me with this.&nbsp;&nbsp;I am going to go try it now.&nbsp;&nbsp;I really really appreciate your consideration and assistance.<br><br><br>