title: use of "that" keyword in javascript
body: <p>I have few javascript that has used the keyword "that" extensively.
  I see a lot of posts talking about the javascript keyword "this".</p>
  
  <p>I wanted to understand the meaning of this key word in javascript context and it's visibility/scope.</p>
  
  <p>Something like </p>
  
  <pre><code>that.someFunctionaName(someParameter)
  </code></pre>
  
  <p>What does it mean?</p>
  
  <p>I understand the keyword "this" always points to the owner of the current object.</p>