How to implement search inside a json Array
<p>I have a json array like this</p>

<pre><code>[
  {"Id":1,
  "Name":"John"
  }, 
  {"Id":2,
  "Name":"Mathew"
  },
   {"Id":3,
  "Name":"Wilfred"
  },
   {"Id":4,
  "Name":"Gary"
  }
]
</code></pre>

<p>I need to implement an auto complete feature using this data. 
so if I search for <code>"Wil"</code> I should get <code>Wilfred</code> as result. How can I do such a search similar to the SQL <code>LIKE</code> in JSON array </p>