examples/angular/logging_off.js
angular.module('DemoApp', [])
.config(['$logProvider', function($logProvider) {
    $logProvider.debugEnabled(false); // turns off the calls to $log.debug, but not the others
}])
.controller('DemoController', ['$log', function($log) {
    $log.debug("Some debug");
    $log.info("Some info");
    $log.log("Some log");
    $log.warn("Some warning");
    $log.error("Some error");
}]);
examples/angular/logging_off.html
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport"
     content="width=device-width, initial-scale=1, user-scalable=yes">
  <script src="angular.min.js"></script>
  <script src="logging_off.js"></script>
</head>
<body ng-app="DemoApp" ng-controller="DemoController">
 <h1>Main Title</h1>
 
</body>
</html>