AngularJS Example:

HTML

<link rel="stylesheet" href="http://twitter.github.com/bootstrap/assets/css/bootstrap.css">
<div ng-app="myApp" ng-controller="myCtrl">
  <div class="form-container" ng-repeat="formblock in forms | dateFilter:myArr">
  {{formblock.date}}
</div>

CSS

.done-true {
  text-decoration: line-through;
  color: grey;
}

JavaScript

var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.myArr = ['arg1', 'arg2'];
  $scope.forms = [{date:'arg1'},{date:'arg2'},{date:'arg2'},{date:'arg10'}];
 
});

app.filter('dateFilter',function(){

var boolFound = false;
		return function(arrForm,arrArg){
    			
          
          arrForm.forEach(function(val,key){
          		
              var boolFound = false;
          		arrArg.forEach(function(val1,key1){
              
              if(val.date===val1){
              		boolFound=true;
              }         		   
             });
             
             if(boolFound===false){
             	arrForm.splice(key,1);
             }
         })
    		return arrForm;
    }
})