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HTML5让Canvas全屏的例子 – 业余草_html/css_WEB-ITnose
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- 2016-06-21 08:55:031171browse
本demo兼容所有主流浏览器。在生活中也有很多这样的使用场景，比如你在玩某页游的时候，希望游戏全屏展示。传统的做法，就是在浏览器里使用div模拟全屏。这种做法并不能达到真正意义上行的全屏。
下面我就教大家使用HTML5的Canvas实现全屏的例子。效果如下：
代码如下：
<!DOCTYPE HTML><html> <head> <title>HTML5实现Canvas全屏——业余草</title> <meta charset="utf-8"> </head> <body> <canvas id="xttblog" width="548" height="364"></canvas> <br/> <input value="点击全屏" onclick="fullScreen();" type="button"> <script type="text/javascript"> // 欢迎您访问业余草官网：www.xttblog.com // 涛哥qq群：454796847 window.onload = function(){ var xttblog =document.getElementById('xttblog'); var context = xttblog.getContext('2d'); var img = new Image(); img.onload = function(){ draw(this); }; img.src = 'http://www.xttblog.com/wp-content/uploads/2016/03/xttblog.png'; function draw(obj){ context.drawImage(obj,0,0); } }; function fullScreen() { var element = document.getElementById('xttblog'),method = "RequestFullScreen"; var prefixMethod; ["webkit", "moz", "ms", "o", ""].forEach(function(prefix) { if (prefixMethod) return; if (prefix === "") { // 无前缀，方法首字母小写 method = method.slice(0,1).toLowerCase() + method.slice(1); } var fsMethod = typeof element[prefix + method]; if (fsMethod + "" !== "undefined") { // 如果是函数,则执行该函数 if (fsMethod === "function") { prefixMethod = element[prefix + method](); } else { prefixMethod = element[prefix + method]; } } } ); return prefixMethod; }; </script> </body></html> Statement：
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