User:Nicole Hametner/canvas

See also Canvas.

A basic coding control structure is the loop which takes it's simplest form as:

while CONDITION {
   LOOP
   LOOP
   LOOP...
}

The condition should be some kind of "boolean" expression that is "true" for a while, and eventually "false" when the loop should stop running.

<canvas id="c1" showsrc> function draw(){

 c = document.getElementById("c1")
 //console.log("c is",c)
 p = c.getContext("2d")
 x = 10
 while (x<250) {
   p.strokeRect(x,100,20,40)
   x+=60
 }

} </canvas>