html5examples/HTML5 - Beginners - Insert Splice array.html at master · Pakz001/html5examples · GitHub

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
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width" />
</head>
<body bgcolor="black">
<div id="test"></div>
<canvas id="myCanvas" width="320" height="240" style="border:0px solid #d3d3d3;">
Use different browser.
</canvas>
	<script>
	var c=document.getElementById("myCanvas");
	var ctx=c.getContext("2d");

	var items = ['bird','badger','dog','cat'];
	// insert weasel at position 0. Shift
	// all others up. array grows size with 1.
	items.splice(0,0,'weasel');

	// Below: insert at 0. Remove the first.
	//items.splice(0,1,'weasel');
	//
	// Bewow: inser at 0. Remove the entire
	// rest of the array.
	//items.splice(0,items.length,'weasel');

	gameloop=setInterval(doGameLoop,16);

	function doGameLoop(){
		myCanvas.height = window.innerHeight-32;
		myCanvas.width = window.innerWidth-32;
		ctx.fillStyle="rgb(0,0,0)";
		ctx.fillRect(0,0,c.width,c.height);
		ctx.fillStyle="rgb(255,255,255)";
		ctx.fillText("Javascript Html canvas example.",10,10);

		// Draw our array contents.
		ctx.fillStyle='white';
		ctx.fillText(items,100,50);
	}
</script>
</body>
</html>