so I tried to create a JS program and it said " A while loop is taking too long to run. Perhaps you have a mistake in your code? here is the code
draw = function() {
var r = random(0,255);
background(255, 255, 255);
fill(r,r,r);
var y = 0;
var x = 0;
while (y < 400) {
rect(0,y,10,10);
y += 10;
while(x < 400){
rect(x,0,10,10);
}
}
};