README.md

front-log

A lightweight client-side logger, useful for production.

Typical use case: you don't want to show a mass of console-logs for everyone, who will open browser's console in your web-application. But you want to see these logs by demand. So you can type the code below in console:

FrontLog.setLevel(FrontLog.LEVELS.DEBUG);

and then just refresh the page. The logging level stores in browser's local storage, so you get all your logs after page refresh.

Or you can add logLevel={LEVEL} to the URL of your page. For example: /my-supper-app/?logLevel=error.

Log level from query string has the highest priority, if present.

Logging levels

There are six levels of logs:

var log = FrontLog;

log.trace('This is trace log record');
log.debug('This is debug log record');
log.info('This is info log record');
log.warn('This is warn log record');
log.error('This is error log record');
log.fatal('This is fatal log record');

trace level is the lowest and fatal is the highest. Each logging level shows all logs from this level to the highest.

Usage

var FrontLog = require('front-log');

or

<script src="dist/front-log.min.js"></script>

Example

See demo/index.html.