laszlo方法的两种不同写法

一，使用全局的方法

<canvas width="500" height="200">  <script>    // Moves the second window twenty pixels to the right    //    function moveWindow() {      var increment = 20;      var originalX = canvas.windowTwo.getAttribute('x');      var newX = originalX + increment;      canvas.windowTwo.setAttribute('x', newX);    }  </script>  <window x="100" y="30"           title="Window 2" name="windowTwo">    <text>This is the second window.</text>  </window>  <window x="20" y="20" width="150"          title="Simple Window">    <button text="My button"               onclick="moveWindow();"/>  </window></canvas>

二,在元素内部定义方法，通过使用<method name="XXX"></method>,然后在onclick事件上面只要指定

				这个方法的name属性即可.

<canvas width="500" height="200">  <window x="100" y="30"           title="Window 2" name="windowTwo">    <text>This is the second window.</text>  </window>  <window x="20" y="20" width="200"          title="Simple Window">    <button text="My button" onclick="this.moveWindow()">      <!-- Moves the second window twenty pixels            to the right -->      <method name="moveWindow">        var increment = 20;        var originalX = this.parent.parent.windowTwo.getAttribute('x');        var newX = originalX + increment;        this.parent.parent.windowTwo.setAttribute('x', newX);      </method>    </button>  </window></canvas>