Javascript 如何在DIV中添加html5画布
我正在使用下面的代码生成一个Javascript 如何在DIV中添加html5画布,javascript,html,canvas,Javascript,Html,Canvas,我正在使用下面的代码生成一个画布。现在它将canvas元素添加到主体,我如何让它添加到名为“divGameStage”的div,它不嵌套在任何其他元素中,除了主体 编辑:我尝试了第一个建议,但没有画布出现,完整代码如下: <head> <meta charset="utf-8"> <title>Game Stage</title> <script type="text/javascript"> function loadCanv
画布
。现在它将canvas元素添加到主体
,我如何让它添加到名为“divGameStage”的div
,它不嵌套在任何其他元素中,除了主体
编辑:我尝试了第一个建议,但没有画布出现,完整代码如下:
<head>
<meta charset="utf-8">
<title>Game Stage</title>
<script type="text/javascript">
function loadCanvas(id) {
var canvas = document.createElement('canvas');
div = document.getElementByID(id);
canvas.id = "CursorLayer";
canvas.width = 1224;
canvas.height = 768;
canvas.style.zIndex = 8;
canvas.style.position = "absolute";
canvas.style.border = "1px solid";
div.appendChild(canvas)
}
</script>
</head>
<body>
<header>
<h1>The most important heading on this page</h1>
<p>With some supplementary information</p>
</header>
<div id="divControls"></div>
<div id="divGameStage"></div>
<script type="text/javascript">
loadCanvas(divGameStage);
</script>
</body>
</html>
游戏阶段
函数loadCanvas(id){
var canvas=document.createElement('canvas');
div=document.getElementByID(id);
canvas.id=“CursorLayer”;
画布宽度=1224;
canvas.height=768;
canvas.style.zIndex=8;
canvas.style.position=“绝对”;
canvas.style.border=“1px solid”;
div.appendChild(画布)
}
本页最重要的标题
附带一些补充资料
loadCanvas(divGameStage);
您只需将其附加到您的
而不是正文:
函数loadCanvas(id){
var canvas=document.createElement('canvas'),
div=document.getElementById(id);
canvas.id=“canvGameStage”;
画布宽度=1000;
canvas.height=768;
canvas.style.zIndex=8;
canvas.style.position=“绝对”;
canvas.style.border=“1px solid”;
子类(画布);
}
/* ... */
loadCanvas(“divGameStage”);
非常简单:-)
函数loadCanvas(){
var canvas=document.createElement('canvas');
canvas.id=“canvGameStage”;
画布宽度=1000;
canvas.height=768;
canvas.style.zIndex=8;
canvas.style.position=“绝对”;
canvas.style.border=“1px solid”;
var div=document.createElement(“div”);
div.className=“divGameStage”;
子类(画布);
document.body.appendChild(div)
}
这里唯一的问题是:
loadCanvas(divGameStage);
将divGameStage
用引号括起来:
loadCanvas("divGameStage");
由于它需要是一个字符串才能通过
getElementById
运行,因此只需尝试此代码,肯定会对您有用:
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Game Stage</title>
<script type="text/javascript">
function loadCanvas(id) {
var canvas = document.createElement('canvas');
div = document.getElementById(id);
canvas.id = "CursorLayer";
canvas.width = 1224;
canvas.height = 768;
canvas.style.zIndex = 8;
canvas.style.position = "absolute";
canvas.style.border = "1px solid";
div.appendChild(canvas)
}
</script>
</head>
<body>
<header>
<h1>The most important heading on this page</h1>
<p>With some supplementary information</p>
</header>
<div id="divControls"></div>
<div id="divGameStage"></div>
<script type="text/javascript">
loadCanvas("divGameStage");
</script>
</body>
</html>
游戏阶段
函数loadCanvas(id){
var canvas=document.createElement('canvas');
div=document.getElementById(id);
canvas.id=“CursorLayer”;
画布宽度=1224;
canvas.height=768;
canvas.style.zIndex=8;
canvas.style.position=“绝对”;
canvas.style.border=“1px solid”;
div.appendChild(画布)
}
本页最重要的标题
附带一些补充资料
loadCanvas(“divGameStage”);
有些事情要记住:
- 错误1是loadCanvas(“divGameStage”)中缺少引号李>
- 错误2是语法错误div=document.getElementById(id);“.ID(ID)”在您的代码中
(特别是
如果是这种情况,FYI IE9及以上版本支持canvas,没有其他较低版本支持canvas
干杯 谢谢,但是没有画布出现,我粘贴了更新的代码,我是在错误的位置调用loadCanvas还是其他原因?当你说没有出现时,你检查了源代码了吗?我很确定画布在你画出来之前是看不见的。谢谢你的提示,我显然没有注意我的引用和案例!可能重复的
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Game Stage</title>
<script type="text/javascript">
function loadCanvas(id) {
var canvas = document.createElement('canvas');
div = document.getElementById(id);
canvas.id = "CursorLayer";
canvas.width = 1224;
canvas.height = 768;
canvas.style.zIndex = 8;
canvas.style.position = "absolute";
canvas.style.border = "1px solid";
div.appendChild(canvas)
}
</script>
</head>
<body>
<header>
<h1>The most important heading on this page</h1>
<p>With some supplementary information</p>
</header>
<div id="divControls"></div>
<div id="divGameStage"></div>
<script type="text/javascript">
loadCanvas("divGameStage");
</script>
</body>
</html>