Full version: jsB@nk » Calculation » Beat Counter script
URL: https://www.javascriptbank.com/beat-counter-script.html
A manual Beats per Minute (BPM) counter for DJs. Counts the beats-per-minute of a song by tapping a key or the mouse to the beat of a song. Simply click on the page to start the time then tap any key to the beat. Cool.
Full version: jsB@nk » Calculation » Beat Counter script
URL: https://www.javascriptbank.com/beat-counter-script.html
<SCRIPT LANGUAGE="JavaScript">// Author Derek Chilcote-Batto (dac-b@usa.net) | http://www.mixed.net// Modified by: Ronnie T. Moore, Editor --><!-- Beginsecs2 = 0;count = 0;allBpm = 0;avgBpm = 0;bpm = 0;ns = (navigator.appName == 'Netscape');ie = (navigator.appName == 'Microsoft Internet Explorer');function bpmCounter(e) {if (ns) clearBpm = e.which;else if (ie) clearBpm = event.button;timeSeconds = new Date;secs = timeSeconds.getTime();if (count == 0) {document.BEATSPERMINUTE.AVG.value = "";document.BEATSPERMINUTE.NOW.value = "READY! Start NOW!";document.BEATSPERMINUTE.HIT.value = "";document.BEATSPERMINUTE.ACG.value = "";document.BEATSPERMINUTE.NCG.value = "";secs2 = secs;count++;}else {oldBpm = bpm;bpm = (1 / ((secs - secs2) / 1000)) * 60;bpmChg = (Math.round((bpm - oldBpm) * 10)) / 10;count++;allBpm = allBpm + bpm;oldAvg = avgBpm;avgBpm = allBpm / (count - 1);avgChg = (Math.round((avgBpm - oldAvg) * 10)) / 10;secs2 = secs;if (bpmChg >= 0) { PbpmChg = "+" + bpmChg } else { PbpmChg = bpmChg }if (avgChg >= 0) { PavgChg = "+" + avgChg } else { PavgChg = avgChg }document.BEATSPERMINUTE.AVG.value = (Math.round(avgBpm * 100)) / 100;document.BEATSPERMINUTE.ACG.value = PavgChg;document.BEATSPERMINUTE.NOW.value = (Math.round(bpm * 100)) / 100;document.BEATSPERMINUTE.NCG.value = PbpmChg;document.BEATSPERMINUTE.HIT.value = count;}return true;}document.onkeydown = bpmCounter;document.onmousedown = bpmCounter;// End --></script><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com--><table border=0 width=400><tr><td width=50% align=middle valign=top><form name="BEATSPERMINUTE"><table border=0 cellpadding=3 cellspacing=0 bgcolor="#007700"><tr><td align=middle><table border=0 cellpadding=3 cellspacing=0 bgcolor="#00FF00"><tr><td align=middle><table border=0 cellpadding=4 cellspacing=0 bgcolor="#efefef"><tr><td><font color="#000000"><tt>AVERAGE BPM</tt></td><td><input name="AVG" size="20"></td><td><input name="ACG" size=6></td></tr><tr><td><font color="#000000"><tt>ONCLICK BPM</tt></td><td><input name="NOW" size="20"></td><td><input name="NCG" size=6></td></tr><tr><td><font color="#000000"><tt>TIMING HITS</tt></td><td><input name="HIT" size="20"></td><td> </td></tr></table></td></tr></table></td></tr></table>Click on the page to start the bpm counter<p>Press a key or click your mouse to measure beats.<br>You may also <input type=reset value="RESET "> the counter.<br>Netscape 4.x+ and MSIE 4.x+ compatible.<p></form></table><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com-->