Threaded comment widget assignment

1. Clone the repository
2. Enter the command "npm install" (if nodejs not installed then install it first).

1. Creating database: Run the file using command 'node database.js' or create manually using MYSQL workbench
2. Create server using nodejs
3. Use express framework to create routes for APIs and store all static files in public directory
4. Sync-mysql is used to perform synchronized operations with MySQL
5. GET: '/fetchComment' => Fetch all the comments from the database ordered by their parent_comment_id.
Note: Default parent_comment_id=0
6. POST: '/addComment' => Adds comment to the database
7. PUT: '/voteUp' => Increments count of up votes up in the database and '/voteDown' => Increments count of vote down in database
8. Functions created:
(1) setId: on clicking Reply button of a specific comment, setId(commentId) function is called and the value of id is set to commentId. So when user enters the new comment then it is stored as a reply to that specific comment.
(2) load_comment(): loads the comments in the index page and shows them in the specified format
(3) voteUp(commentId): Increments count of vote up of comment with id = commentId
(4) voteDown(commentId): Increments count of vote up of comment with id = commentId
9. AJAX is used using plain javascript to support dynamic loading of page content
10. Timestamp is calculated by comparing it with current timestamp and the best choice is selected to display with the comment. eg: 5 seconds ago etc.

Note: Data is send and received in JSON form.

REST API are tested using POSTMAN.

Note: JQuery is only included as a plugin for bootstrap

1. Form included two input elements: (1) User name (2) Comment
2. When user submits the form the validation checks are applied for empty fields
3. Bootstrap panels and buttons are used to display the comments and buttons
4. Font-awesome library used for like and dislike logo
5. Comments are showed in a nested form
6. Users can reply to others' comment by clicking on Reply button of specific comment and then submitting the form at the top of the page
7. Date showed in a style similar to that of Facebook
8. Like and Dislike buttons are included at the bottom of the comment

Note: Easily pluggable into existing website.