HTML5 Canvas標籤範例

隨著時代的進步,HTML的版本一直在進化,目前比較新的版本應該就是HTML5了,這次的HTML5針對許多標籤進行調整,當然也新增了一些標籤,主要的目的是希望可以將一些本來需要利用Flash才可以完成的互動頁面取而用HTML5來進行設計,這樣比較能減輕網頁的負載,但不管怎麼進步,其最重要的目的當然還是要網友能夠看到才行!

目前各家的瀏覽器對於HTML5的支援都不一,如果想要測試看看自己所使用的瀏覽器對HTML5的支援程度,可以到這個網址測試,馬老師針對目前的三款瀏覽器(IE9、Firefox6、Chrome13)來做了測試,IE9於HTML5中測試得到了以下的分數:

IE9於HTML5中測試分數

Firefox6於HTML5中測試得到了以下的分數:

Firefox6於HTML5中測試分數

Chrome13於HTML5中測試得到了以下的分數:

Chrome13於HTML5中測試分數

所以用以上的結果來看,目前是Google Chrome對於HTML5的支援最好,不過也只是拿了450分中的340而已,所以是否要全面改用HTML5來開發,還是應該要好好的斟酌一下,但是先了解HTML5能做到的功能,一定是沒問題的!以下就是馬老師針對HTML新增的畫布標籤製作的範例,不過因為瀏覽器支援的關係,必須使用Chrome觀賞才會是比較完整的功能喔!

範例觀賞頁面

範例影片:

PS:本範例的網頁所使用的圖檔為寬:800、高:600的圖檔,並將圖檔至於img的資料夾中

網頁程式碼:

<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Slide Show</title>
<script>

var context;
var x = 0;
var ind;
var offset;
var photos = new Array();

for(var i=1;i<=13;i++){
	var im = new Image();
	im.src = "img/p" + i + ".jpg";
	photos.push(im);
}

function slideshow(){
	context = document.getElementById('canvas').getContext('2d');
	setInterval(loop,10);
}

function loop(){
	x += (slider.value - x) * 0.1;
	ind = Math.floor(x/800);
	offset = x % 800;
	context.drawImage(photos[ind], offset, 0, 800-offset, 600, 0, 0, 800-offset, 600);
	context.drawImage(photos[ind+1], 0, 0, 800, 600, 800-offset, 0, 800, 600);
}

</script>
</head>
<body onLoad="slideshow()">

<canvas width="800" height="600" id="canvas"></canvas><br />
<input type="range" id="slider" style="width:800px;" min="0" max="9600" step="1" value="0">

</body>
</html>

You may also like...

3,772 Responses

  1. avana drug表示:

    zanaflex erowid experience zanaflex 4mg price drug interactions for zanaflex and zofran what milligrams do zanaflex come in

  2. 12 gabapentin表示:

    neurontin uses anxiety neurontin 214 neurontin 300 mg back pain what is the shelf life of gabapentin

  3. kamagra pill viagra gel in india kamagra gel how long does it last where can i buy kamagra in australia

  4. cartia tablet表示:

    diltiazem supraventricular tachycardia cartia australia diltiazem effect on heart rate what is a good substitute for diltiazem

  5. Please let us know when you plan to publish your book!

  6. ajehbqfd表示:

    plaquenil medication hydroxychloroquine 200mg

  7. jbhwpxgk表示:

    erythromycin ophthalmic ointment for newborns http://erythromycinn.com/#

  8. Slonmob表示:

    9ubzu

    ebz7o

    11co

  9. ywkkvpvr表示:

    erythromycin uses erythromycin lactobionate

  10. Slonmob表示:

    n1a6v

    6pwz1

    017l

  11. RobertRhync表示:

    cialis in canada pharmacy buy tadalafil lowest price on cialis 200 mg

  12. RobertRhync表示:

    generic medications cialis cialis pills which is safer viagra or cialis

  13. RobertRhync表示:

    cialis cheap over night price of cialis 20 mg cialis and douextine

  14. hub表示:

    Great blog here! Also your site loads up very fast! What web host are you using? Can I get your affiliate link to your host? I wish my website loaded up as fast as yours lol

  15. tube表示:

    Hello this is kinda of off topic but I was wondering if blogs use WYSIWYG editors or if you have to manually code with HTML. I’m starting a blog soon but have no coding knowledge so I wanted to get advice from someone with experience. Any help would be enormously appreciated!

  16. hot表示:

    Good job for bringing something important to the internet!

發佈留言

發佈留言必須填寫的電子郵件地址不會公開。