How to turn on/off $log.debug in AngularJS

Question

I'm trying to use $log.debug("Foo"). How can it be turned on off. I can't find a sample anywhere. I think it need to be set in the config, but I cant seem to get that to work either.

Where does one set the on and off switch?

Answer 1

You can override the default $log behavior with a decorator to enhace the log level. This is an example:

angular.module('app').config(function($logProvider, $provide){      $logProvider.debugEnabled(false);      $provide.decorator('$log', function ($delegate) {         //Original methods         var origInfo = $delegate.info;         var origLog = $delegate.log;          //Override the default behavior         $delegate.info = function () {              if ($logProvider.debugEnabled())                 origInfo.apply(null, arguments)         };          //Override the default behavior             $delegate.log = function () {              if ($logProvider.debugEnabled())                 origLog.apply(null, arguments)         };          return $delegate;     }); }); 

This was inspired from the work of John Crosby at http://www.thekuroko.com/using-angulars-log-provider/

Answer 2

$logProvider.debugEnabled(true)

This is only available in AngularJs 1.1.2 or later.

https://github.com/angular/angular.js/pull/1625

Here is an example of it being set.

var app = angular.module('plunker', []);  app.config(function($logProvider){   $logProvider.debugEnabled(true); });  app.controller('MainCtrl', function($scope, $log ) {   $scope.name = 'World';   $scope.model = {value: "test"};   $log.debug('TEST Log'); }); 

http://plnkr.co/edit/HZCAoS?p=preview

By default it is on.