html5画布和emberjs视图 [英] html5 canvas and emberjs view

问题描述

我想在我的基于ember的应用程序中添加一些绘图功能。我打算使用html5画布元素。基本上，在我的DOM中，我有

 < canvas id =my-canvas> 
  

当DOM加载

$ b $时，我需要获取我的画布上下文b

  var c = document.getElementById（'my-canvas'）
 // ...用c 
 c $ c> 

如果画布用Ember.View表示：

  App.Canvas = Em.View.extend（{
 tagName：'canvas'
}）
  

相当于 document.getElementById ？

解决方案

  var view = App.Canvas.create（）。append（）; 
 var viewContext = Ember.get（view，'element'）; 
  

viewContext 将保存您需要的内容。 / p>


I'd like to add some drawing functionality in my ember based application. I plan to use the html5 canvas element. Basically, in my DOM I have

<canvas id="my-canvas">

And I need to get my canvas context when the DOM is loaded with

var c = document.getElementById('my-canvas')
// ... do something with c

If the canvas is represented with an Ember.View :

App.Canvas = Em.View.extend({
 tagName: 'canvas'
})

What is the equivalent of document.getElementById?

解决方案

var view = App.Canvas.create().append();
var viewContext = Ember.get(view, 'element');

viewContext will hold what you need.

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