filter filters in angular

Select a subset of elements from an array and return the result in a new array.
Syntax:
  {{ filter_expression | filter : expression : comparator : anyPropertyKey}}

expression The predicate to be used for selecting items from array.The final result is an array of those                          elements that the predicate returned true for.

Comparator : Defaults to false.

Example:

In JavaScript:

var myApp = angular.module('myApp', []);

myApp.controller('StdController', function($scope) {

  var StdDetails = [{

    StdName: "Mohit",

    StdClass: "MCA"

  }, {

    StdName: "Amit",

    StdClass: "BSC"

  }, {

    StdName: "Manoj",

    StdClass: "Xii"

  }];

  $scope.StdDetails = StdDetails;

  $scope.flt = function(element) {

    if ($scope.StdName1 == undefined || $scope.StdName1 == "") {

      return true;

    } else {

         var regExp = new RegExp("^" + $scope.StdName1, "gi");

      var val = element.StdName.match(regExp) ? true : false;

      return val;

    }

  };

});

In HTML:

<div ng-controller="StdController">

  <div><b>Filter in filters</b></div>

  <!-- Approch#1 -->

  <hr/> Exact match search:

  <input type="checkbox" ng-model="IsExactMatch" />

  <br/> Entire column search : &nbsp;

  <input type="textbox" value="" ng-model="stdname.$" placeholder="input value" />

  <br/>

  <br/> Student Name column search by HTML:

  <input type="textbox" ng-model="stdname.StdName" placeholder="input value" />

  <hr/>

  <table>

    <tr>

      <th>Student Name </th>

      <th>Class</th>

    </tr>

    <tr ng-repeat="std in StdDetails | filter:stdname:IsExactMatch">

      <td>{{std.StdName}} </td>

      <td>{{std.StdClass}}</td>

    </tr>

  </table>

  <!-- Approch#2 -->

  <hr/>

  <br/> Student Name column search by function:

  <input type="textbox" ng-model="StdName1" placeholder="input value" />

  <table>

    <tr>

      <th>Student Name </th>

      <th>Class</th>

    </tr>

    <tr ng-repeat="std in StdDetails | filter:flt">

      <td>{{std.StdName}} </td>

      <td>{{std.StdClass}}</td>

    </tr>

  </table>

</div>

I created a fiddle here with a demo:
https://jsfiddle.net/8qm45ard/