音楽02 - 経済統計練習帳

var ma;
var x;
 
function sample(){
 
var timer;
var delay = 1000;
 
x=250;    
 
ma = new Audio("short.mp3");    
 
var loop = function(){
 
dx=(100*Math.random()-50);
x=x+dx;   
 
if(x>400)x=400;
if(x<100)x=100;    
 
if(dx>0)ma.play();  
 
paint();
 
clearTimeout(timer);
timer = setTimeout(loop,delay);
}
 
loop();
 
}
 
function paint(){
 
var sub=new svgpaint();
 
str="<svg width=\"500\" height=\"500\">";
str=str+sub.rect(0,0,x,x,"red");
str=str+sub.rect(x,x,500-x,500-x,"blue");   
str=str+"</svg>";
 
$("#memo").html(str);
 
}