1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
<!-- Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ -->
<!doctype html>
<html>
<head>
<meta charset="utf-8"/>
<title>Canvas inspector test page</title>
</head>
<body>
<canvas width="128" height="128"></canvas>
<script type="text/javascript;version=1.8">
"use strict";
var ctx = document.querySelector("canvas").getContext("2d");
function drawRect(fill, size) {
function A() {
function B() {
function C() {
ctx.fillStyle = fill;
ctx.fillRect(size[0], size[1], size[2], size[3]);
}
C();
}
B();
}
A();
}
function drawScene() {
ctx.clearRect(0, 0, 128, 128);
drawRect("rgb(192, 192, 192)", [0, 0, 128, 128]);
drawRect("rgba(0, 0, 192, 0.5)", [30, 30, 55, 50]);
drawRect("rgba(192, 0, 0, 0.5)", [10, 10, 55, 50]);
window.requestAnimationFrame(drawScene);
}
drawScene();
</script>
</body>
</html>
|
