bcls

/**
 * tests for all the ways a variable might be undefined or not have a value
 * @param {*} x the variable to test
 * @return {Boolean} true if variable is defined and has a value
 */
function isDefined(x) {
    if ( x === '' || x === null || x === undefined) {
        return false;
    }
    return true;

bcls

/**
 * utility to extract h/m/s from seconds
 * @param {number} secs - seconds to convert to hh:mm:ss
 * @returns {object} object with members h (hours), m (minutes), s (seconds)
 */
function secondsToTime(secs) {
    var hours = Math.floor(secs / (60 * 60)),
        divisor_for_minutes = secs % (60 * 60),
        minutes = Math.floor(divisor_for_minutes / 60),
        divisor_for_seconds = divisor_for_minutes % 60,

bcls

/**
 * append new HTML elements to some existing one - efficiently
 * @param  {Object} htmlEl reference to the HTML element to append new HTML to
 */
function appendHTML(htmlEl) {
    var i = 0, el, fragment = document.createDocumentFragment();
    
    while (i < 200) {
        el = document.createElement('li');
        el.innerText = 'This is my list item number ' + i;

bcls

/**
 * gets value of a URL param if exists
 * @param {string} name the param you want the value of
 * @return {string} result value of param if exists or ""
 */
function getURLparam(name) {
    var regex,
        results;
    name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
    regex = new RegExp("[\\?&]" + name + "=([^&#]*)");

bcls

/**
 * remove spaces from a string
 * @param {String} str string to process
 * @return {String} trimmed string
 */
function removeSpaces(str) {
    str= str.replace(/\s/g, '');
    return str;
}

bcls

// create navigation for page sections
    function createInPageNavMenu() {
        var sideNavList = document.querySelector('.bc-ipnav-block ul'),
            // get reference to Related Topics item
            lastLI = sideNavList.lastChild,
            i,
            max = navLabel.length,
            aEl,
            liEl,
            txt;

bcls

/*
 * tests to see if a string is json
 * @param {String} str string to test
 * @return {Boolean}
 */
function isJson(str) {
    try {
        JSON.parse(str);
    } catch (e) {
        return false;

bcls

a.push.apply( a, b );

bcls

/**
 * dedupe a simple array of strings or numbers
 * @param {array} arr the array to be deduped
 * @return {array} out the deduped array
 */
function dedupe(arr) {
    var i,
        len = arr.length,
        out = [],
        obj = {};

bcls

/**
 * remove spaces from a string
 * @param {String} str string to process
 * @return {String} trimmed string
 */
function removeSpaces(str) {
    str= str.replace(/\s/g, '');
    return str;
}