angularjs - how to get in the controller the index of an item in a ng-repeat filter based on the value of one of its properties?

Question

I use a ng-repeat in my html file to display filtered items:

  {{ item.name }}
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Answer 1

Your ng-repeat expression creates the filteredList array on your scope.
<li ng-repeat="item in (filteredItems = (items | filter:query))">

You can loop through it like any array, checking for the item matching the name parameter. $scope.filteredItems

Here is a demo: http://plnkr.co/69nnbaZaulgX0odG7g7Y

See this related post: AngularJS - how to get an ngRepeat filtered result reference

Update
Your comments indicate that you don't want to wait for ng-repeat to create the array of filtered items. You can use the $filter service to easily initialize the same array before the page loads. Use:

$scope.filteredItems = $filter('filter')($scope.items, {name: $scope.query}, false)

Doing so does not interfere with ng-repeat saving its filter results to the same filteredItems array during DOM creation.

Here is an updated (and interactive) demo: http://plnkr.co/NSvBz1yWvmeFgXITutZF