Class Pattern

An alternative approach to implementing the constructor pattern, with a nicer syntax and some additional features.

Example: a piggy bank library.

Change MyLibrary to whatever namespace you’d like to use for your library. The constructor object is lowercase, and functions are automatically attached to the instance prototype.

Examples

// Create new instances of the constructor
let dugg = new MyLibrary();
let kevin = new MyLibrary(4);

// Run methods
dugg.add(2);
kevin.subtract(1);
let total = dug.total;

The Boilerplate

class MyLibrary {

	/**
	 * Create the constructor object
	 * @param {Number} start The starting amount
	 */

	constructor (start = 0) {
		this.total = start;
	}

	/**
	 * Add money to the total
	 */
	add (num = 1) {
		this.total = this.total + num;
	}

	/**
	 * Remove money from the total
	 */
	subtract (num = 1) {
		this.total = this.total - num;
	}
}