■スクリプト
<HTML> <HEAD> <TITLE>Sample</TITLE> </HEAD> <BODY bgColor="white"> <CENTER> <H1>XY座標から角度を求めます</H1> </CENTER> <TABLE BORDER="1"> <SCRIPT Language="JavaScript"> <!-- document.write("<TR><TD>Math.atan2(12,24)</TD><TD>",Math.atan2(12,24),"</TD></TR>"); document.write("<TR><TD>Math.atan2(30,30)</TD><TD>",Math.atan2(30,30),"</TD></TR>"); // --> </SCRIPT> </TABLE> </BODY></HTML>