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costcalc/js/jquery.nas-calculator.js
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jquery.nas-calculator.js
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/*!
* jQuery Loan Calculator 3.1.3
*
* Author: Jorge González <scrub.mx@gmail>
* Released under the MIT license - https://opensource.org/licenses/MIT
*/
;(function ($, window, document, undefined) {
"use strict";
const NASPERF_RATES = {
'Collaborative': 165,
'On-line archive': 110,
'Raw': 55
};
const MINIMUM_AMOUNT = 1;
const defaults = {
// default values for a nas
AMOUNT_FREE : 1,
nasAmount: 1,
nasperfRates: NASPERF_RATES,
nasperf: 'Collaborative',
// inputs
nasAmountSelector: '#nas-amount',
nasperfSelector: '#nas-perf',
// display selected values
selectedAmount: '#nac',
selectedRate: '#npr',
// display the results
nascost: '#nas-cost'
};
/**
* The actual plugin constructor
* @param {Object} element
* @param {Object} options
*/
function Plugin(element, options) {
this.$el = $(element);
this._name = 'NasCalculator';
this._defaults = defaults;
this.settings = $.extend({}, defaults, options);
this.attachListeners();
this.init();
}
// Avoid Plugin.prototype conflicts
$.extend(Plugin.prototype, {
//
/**
* Validates the data and shows the results.
* @return {void}
*/
init: function () {
this.validate();
this.render();
},
/**
* Attach event listeners to the event handlers.
* @return {void}
*/
attachListeners: function () {
var eventEmitters = [
this.settings.nasAmountSelector,
this.settings.nasperfSelector,
];
$(eventEmitters.join()).on({
change : this.eventHandler.bind(this),
mousemove : this.eventHandler.bind(this),
touchmove : this.eventHandler.bind(this)
});
},
/**
* Handle events from the DOM.
* @return {void}
*/
eventHandler: function () {
this.update({
nasAmount : this.$el.find(this.settings.nasAmountSelector).val(),
nasperf : this.$el.find(this.settings.nasperfSelector).val()
});
},
/**
* Sanitize and validate the user input data.
* @throws Error
* @return {void}
*/
validate: function () {
if (typeof this.settings.nasAmount === 'string') {
this.settings.nasAmount = this._toNumeric(this.settings.nasAmount);
}
if (! $.isPlainObject(this.settings.nasperfRates)) {
throw new Error('The value provided for [nasperfRates] is not valid.');
}
for (var perfRate in this.settings.nasperfRates) {
if (typeof this.settings.nasperfRates[perfRate] === 'string') {
this.settings.nasperfRates[perfRate] = this._toNumeric(this.settings.nasperfRates[perfRate]);
}
if (! $.isNumeric(this.settings.nasperfRates[perfRate])) {
throw new Error('The value provided for [nasperfRates] is not valid.');
}
if (this.settings.nasperfRates[perfRate] < 1) {
this.settings.nasperfRates[perfRate] = this.settings.nasperfRates[perfRate] * 100;
}
}
// Sanitize the input
this.settings.nasAmount = parseFloat(this.settings.nasAmount);
if (! this.settings.nasperfRates.hasOwnProperty(this.settings.nasperf)) {
throw new Error('The value provided for [nasperf] is not valid.');
}
if (this.settings.nasAmount < MINIMUM_AMOUNT) {
throw new Error('The value provided for [nasAmount] must me at least the minimum.');
}
},
/**
* Show the results in the DOM.
* @return {void}
*/
render: function () {
this._displaySelectedValues();
this._displayResults();
},
/**
* Show the selected values in the DOM.
* @return {void}
*/
_displaySelectedValues: function () {
// Display the selected nas amount
this.$el.find(this.settings.selectedAmount).html(
this.settings.nasAmount
);
// Display the selected performances
this.$el.find(this.settings.selectedRate).html(
this.settings.nasperfRates[this.settings.nasperf]
);
},
/**
* Display the results for the current values.
* @return {void}
*/
_displayResults: function () {
// Display the loan total
this.$el.find(this.settings.nascost).val(
this._toMoney(this._nasTotal())
);
},
update: function (args) {
this.settings = $.extend({}, this._defaults, this.settings, args);
this.init();
this.$el.trigger('nas:update');
},
_nasTotal: function (){
const cost = this.settings.nasperfRates[this.settings.nasperf] * (this.settings.nasAmount-this._defaults.AMOUNT_FREE);
return cost;
},
/**
* Convert numeric format to money format.
* @param {Number} numeric
* @return {String}
*/
_toMoney: function (numeric) {
if (typeof numeric == 'string') {
numeric = parseFloat(numeric);
}
return numeric.toFixed(0).replace(/(\d)(?=(\d{3})+\.)/g, '$1,') + ' CHF';
},
/**
* Convert from money format to numeric format.
* @param {String} value
* @return {Number}
*/
_toNumeric: function (value) {
return parseFloat(
value.toString().replace(/[^0-9\.]+/g, '')
);
},
/**
* To convert the provided value to percent format.
* @param {Number} numeric
* @returns {String}
*/
_toPercentage: function (numeric) {
return (numeric * 100).toFixed(2) + '%';
}
});
/*!
* jQuery Nas Calculator
*
* Author: J
* Released under the MIT license - https://opensource.org/licenses/MIT
*/
/**
* Wrapper around the constructor to prevent multiple instantiations.
*/
$.fn.NasCalculator = function (options, args) {
return this.each(function () {
var instance = $.data(this, 'plugin_nasCalculator');
if (! instance) {
$.data(this, 'plugin_nasCalculator', new Plugin(this, options));
}
else if (options === 'update') {
return instance.update(args);
}
});
};
})(jQuery, window, document);
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