content/js/readingTime.js

/*!
 Name: Reading Time
 Dependencies: jQuery
 Author: Michael Lynch
 Author URL: http://michaelynch.com
 Date Created: August 14, 2013
 Date Updated: July 11, 2016
 Licensed under the MIT license
 */

;(function($) {

    var totalReadingTimeSeconds;

    $.fn.readingTime = function(options) {

        //define default parameters
        var defaults = {
                readingTimeTarget: '.eta',
                readingTimeAsNumber: false,
                wordCountTarget: null,
                wordsPerMinute: 270,
                round: true,
                lang: 'en',
                lessThanAMinuteString: '',
                prependTimeString: '',
                prependWordString: '',
                remotePath: null,
                remoteTarget: null,
                success: function() {},
                error: function() {}
            },
            plugin = this,
            el = $(this);

        //merge defaults and options
        plugin.settings = $.extend({}, defaults, options);

        //define vars
        var s = plugin.settings;

        //if no element was bound
        if(!this.length) {

            //run error callback
            s.error.call(this);

            //return so chained events can continue
            return this;
        }

        //if s.lang is set to italian
        if(s.lang == 'it') {

            var lessThanAMinute = s.lessThanAMinuteString || "Meno di un minuto";

            var minShortForm = 'min';

            //if s.lang is set to french
        } else if(s.lang == 'fr') {

            var lessThanAMinute = s.lessThanAMinuteString || "Moins d'une minute";

            var minShortForm = 'min';

            //if s.lang is set to german
        } else if(s.lang == 'de') {

            var lessThanAMinute = s.lessThanAMinuteString || "Weniger als eine Minute";

            var minShortForm = 'min';

            //if s.lang is set to spanish
        } else if(s.lang == 'es') {

            var lessThanAMinute = s.lessThanAMinuteString || "Menos de un minuto";

            var minShortForm = 'min';

            //if s.lang is set to dutch
        } else if(s.lang == 'nl') {

            var lessThanAMinute = s.lessThanAMinuteString || "Minder dan een minuut";

            var minShortForm = 'min';

            //if s.lang is set to slovak
        } else if(s.lang == 'sk') {

            var lessThanAMinute = s.lessThanAMinuteString || "Menej než minútu";

            var minShortForm = 'min';

            //if s.lang is set to czech
        } else if(s.lang == 'cz') {

            var lessThanAMinute = s.lessThanAMinuteString || "Méně než minutu";

            var minShortForm = 'min';

            //if s.lang is set to Hungarian
        } else if(s.lang == 'hu') {

            var lessThanAMinute = s.lessThanAMinuteString || "Kevesebb mint egy perc";

            var minShortForm = 'perc';

            // if s.lang is set to Russian
        } else if (s.lang == 'ru') {

            var lessThanAMinute = s.lessThanAMinuteString || "Меньше минуты";

            var minShortForm = 'мин';

            //if s.lang is set to Arabic
        } else if (s.lang == 'ar') {

            var lessThanAMinute = s.lessThanAMinuteString || "أقل من دقيقة";

            var minShortForm = 'دقيقة';

            //if s.lang is set to Danish
        } else if(s.lang == 'da') {
            var lessThanAMinute = s.lessThanAMinuteString || "Mindre end et minut";
            var minShortForm = 'min';

            //if s.lang is set to Icelandic
        } else if(s.lang == 'is') {
            var lessThanAMinute = s.lessThanAMinuteString || "Minna en eina mínútu";
            var minShortForm = 'min';

            //if s.lang is set to Norwegian
        } else if(s.lang == 'no') {
            var lessThanAMinute = s.lessThanAMinuteString || "Mindre enn ett minutt";
            var minShortForm = 'min';

            //if s.lang is set to Polish
        } else if(s.lang == 'pl') {
            var lessThanAMinute = s.lessThanAMinuteString || "Mniej niż minutę";
            var minShortForm = 'min';

            //if s.lang is set to Russian
        } else if(s.lang == 'ru') {
            var lessThanAMinute = s.lessThanAMinuteString || "Меньше минуты";
            var minShortForm = 'мой';

            //if s.lang is set to Swedish
        } else if(s.lang == 'sv') {
            var lessThanAMinute = s.lessThanAMinuteString || "Mindre än en minut";
            var minShortForm = 'min';

            //if s.lang is set to Turkish
        } else if(s.lang == 'tr') {
            var lessThanAMinute = s.lessThanAMinuteString || "Bir dakikadan az";
            var minShortForm = 'dk';

            //default s.lang is english
        } else {

            var lessThanAMinute = s.lessThanAMinuteString || 'Less than a minute';

            var minShortForm = 'min';

        }

        var setTime = function(text) {

            if(text !== '') {

                //split text by spaces to define total words
                var totalWords = text.trim().split(/\s+/g).length;

                //define words per second based on words per minute (s.wordsPerMinute)
                var wordsPerSecond = s.wordsPerMinute / 60;

                //define total reading time in seconds
                totalReadingTimeSeconds = totalWords / wordsPerSecond;

                //define reading time in minutes
                //if s.round is set to true
                if(s.round === true) {

                    var readingTimeMinutes = Math.round(totalReadingTimeSeconds / 60);

                    //if s.round is set to false
                } else {

                    var readingTimeMinutes = Math.floor(totalReadingTimeSeconds / 60);

                }

                //define remaining reading time seconds
                var readingTimeSeconds = Math.round(totalReadingTimeSeconds - readingTimeMinutes * 60);

                //if s.round is set to true
                if(s.round === true) {

                    //if minutes are greater than 0
                    if(readingTimeMinutes > 0) {

                        //set reading time by the minute
                        $(s.readingTimeTarget).text(s.prependTimeString + readingTimeMinutes + ((!s.readingTimeAsNumber) ? ' ' + minShortForm : ''));

                    } else {

                        //set reading time as less than a minute
                        $(s.readingTimeTarget).text((!s.readingTimeAsNumber) ? s.prependTimeString + lessThanAMinute : readingTimeMinutes);

                    }

                    //if s.round is set to false
                } else {

                    //format reading time
                    var readingTime = readingTimeMinutes + ':' + readingTimeSeconds;

                    //set reading time in minutes and seconds
                    $(s.readingTimeTarget).text(s.prependTimeString + readingTime);

                }

                //if word count container isn't blank or undefined
                if(s.wordCountTarget !== '' && s.wordCountTarget !== undefined) {

                    //set word count
                    $(s.wordCountTarget).text(s.prependWordString + totalWords);

                }

                //run success callback
                s.success.call(this);

            } else {

                //run error callback
                s.error.call(this, 'The element is empty.');
            }

        };

        //for each element
        el.each(function() {

            //if s.remotePath and s.remoteTarget aren't null
            if(s.remotePath != null && s.remoteTarget != null) {

                //get contents of remote file
                $.get(s.remotePath, function(data) {

                    //set time using the remote target found in the remote file
                    setTime($('<div>').html(data).find(s.remoteTarget).text());

                });

            } else {

                //set time using the targeted element
                setTime(el.text());
            }
        });

        return totalReadingTimeSeconds;
    }


})(jQuery);