TaxPrice Object

TaxPrice.js

/**
 * TaxPrice
 * Created by: Koen
 * Date: 6-7-15
 * Time: 10:50
 *
 * @param price
 * @param isTaxPrice
 * @param taxRate
 * @constructor
 */
function TaxPrice(price, isTaxPrice, taxRate) {

    var defaultTaxRate = 21;

    if(taxRate === undefined)
        this.taxRate = defaultTaxRate;
    else
        this.taxRate = taxRate;

    if(isTaxPrice){
        this.withTax = price;
        this.taxPrice = (this.withTax / (100 + this.taxRate) * this.taxRate);
        this.withoutTax = this.withTax - this.taxPrice;
    }else{
        this.withoutTax = price;
        this.taxPrice = this.withoutTax * (this.taxRate / 100);
        this.withTax = this.withoutTax + this.taxPrice;
    }

    /**
     * Getter for price including taxes
     *
     * @param decimal whether to return full float or rounded
     * @returns float
     */
    this.getWithTax = function(decimal){
        if(decimal)
            return this.withTax;
        return this.withTax.toFixed(2);
    };

    /**
     * Getter for price excluding taxes
     *
     * @param decimal whether to return full float or rounded
     * @returns float
     */
    this.getWithoutTax = function(decimal){
        if(decimal)
            return this.withoutTax;
        return this.withoutTax.toFixed(2);
    };

    /**
     * Getter for amount of tax price on the given tax rate
     *
     * @param decimal whether to return full float or rounded
     * @returns float
     */
    this.getTaxPrice = function(decimal) {
        if(decimal)
            return this.taxPrice;
        return this.taxPrice.toFixed(2);
    }
}