log err

Experimenting with window.onerror , trying to make JavaScript debugging easy.

What does it do?

Provides JavaScript error details in a readable format. Recently added a feature where developers can log messages on their remote server by enabling remoteLogging feature of logerr. By enabling remoteLogging , logerr will send a post request to desired action/url with JavaScript error details along with custom parameters if required.

Example

Lets take a simple code snippet which will raise an exception.


     var test = a + 1;
     
      //a is not defined

Instead of javascript throwing Uncaught ReferenceError: a is not defined , using logerr will output something like


     
      
       Type
      
      :
      
       error
      
      
       Error
      
      :
      
       Uncaught ReferenceError: a is not defined
      
      
       File Name
      
      : logerr.js
      
       Path
      
      : http://localhost:8888/logerr/logerr.js
      
       Line
      
      : 51
      
       Column
      
      : 12
      
       Date
      
      : Tue Jun 28 2016 19:51:22 GMT+0530 (IST)
      
       Debug
      
      : http://localhost:8888/logerr/logerr.js:51
      
       Get Help
      
      :
      
       https://stackoverflow.com/search?q=Uncaught+ReferenceError:+a+is+not+defined

Install

Just include logerr.js file in the <head> section of your page, before you include any other JavaScript. To initialize logerr, use Logerr.init()


     <!DOCTYPE html>
<html lang="en">
  <head>
    <script src="
     
      logerr.js
     
     "></script>
    <script>
     
      Logerr.init();
     
     </script>
  </head>
  <body>
    Am fancy
  </body>
</html>

Enable Remote Logging

Make sure you have CORS enabled if logging cross-domain.


     Logerr.init({
  remoteLogging: true,
  remoteSettings: {
    url: 'REMOTE_URL',
    additionalParams: {
      logged_by: 'Sam'
    },
    successCallback: function () {
      console.log('Im logged.');
    },
    errorCallback: function () {
      console.log('Err! Something went wrong.');
    }
  }
});

Default Configuration & Datatypes


     detailedErrors: true
     
      //Boolean true/false, Optional
     
     remoteLogging: false
     
      //Boolean true/false, Optional
     
     remoteSettings: {
     
      //Object {}, required if remoteLogging is set to true
     
     url: null,
     
      //String '', required if remoteLogging is set to true
     
     additionalParams: null,
     
      //Object {}, optional
     
     successCallback: null,
     
      //function() {}, optional
     
     errorCallback: null
     
      //function() {}, optional
     
     }