title: 'get' keyword in typescript
body: <pre><code>private mouseHover:MouseEventHandler&lt;HTMLElement&gt; = new MouseEventHandler&lt;HTMLElement&gt;();
  public get onMouseHover():  MouseEventHandler&lt;HTMLElement&gt; { return this.mouseHover; }
  </code></pre>
  
  <p>For the above code, I don't understand the 'get' keyword. Could anyone teach me the relative knowledge and give me examples? Thanks!</p>