JSFiddle - React, Tailwind, and code Playground
by Evan Sharp
HTML
<div ng-app ng-controller="myCtrl">
{{myArr.length}} - {{(myArr|filter:1).length}}
</div>
JavaScript
function myCtrl($scope) {
$scope.myArr = [[1,2,6],[1,2,7,9],[2],[1,5,3,2,6]];
}