title: How to check if a value is an integer or a string in jasmine.js?
body: <p>I am writing unit test using Jasmine in a web app using BackboneJS.<br>
  There are a lot of examples showing you how to check a value in this way:</p>
  
  <pre><code>        it("should set the id property to default value", function()
          {
              expect(this.task.get("id")).toEqual(null);
          });
  </code></pre>
  
  <p>But I can't find any example checking if an attribute whether is number or string in Javascript using Jasmine.</p>
  
  <p>Is it appropriate to make a check like this?<br>
  If yes, what is the proper way to make it?</p>
  
  <p>Example: I want to check if the <code>id</code> is an integer > 0. How can I make it in Jasmine?</p>