andreyshr

var getLocalStorageSize = function() {
    var total = 0;
    for (var x in localStorage) {
        // Value is multiplied by 2 due to data being stored in `utf-16` format, which requires twice the space.
        var amount = (localStorage[x].length * 2) / 1024 / 1024;
        if (!isNaN(amount) && localStorage.hasOwnProperty(x)) {
            total += amount;
        }
    }
    return total.toFixed(2);

andreyshr

// media query event handler
if (matchMedia) {
const mq = window.matchMedia("(min-width: 500px)");
mq.addListener(WidthChange);
WidthChange(mq);
}

// media query change
function WidthChange(mq) {
if (mq.matches) {

andreyshr

function declOfNum(number, titles) {  
    cases = [2, 0, 1, 1, 1, 2];  
    return titles[ (number%100>4 && number%100<20)? 2 : cases[(number%10<5)?number%10:5] ];  
}

use:
declOfNum(count, ['найдена', 'найдено', 'найдены']);

andreyshr

// функция для получение выделенного текста
function getSelectedText(){
    var text = "";
    if (window.getSelection) {
        text = window.getSelection();
    }else if (document.getSelection) {
        text = document.getSelection();
    }else if (document.selection) {
        text = document.selection.createRange().text;
    }

andreyshr

const container = document.querySelector('.scroll-container');
container.addEventListener('wheel', horizontalWheelScroll);

function horizontalWheelScroll (event) {
    let modifier;
    if (event.deltaMode === event.DOM_DELTA_PIXEL) {
        modifier = 1;
        // иные режимы возможны в Firefox
    } else if (event.deltaMode === event.DOM_DELTA_LINE) {
        modifier = parseInt(getComputedStyle(this).lineHeight);

andreyshr

function formatDigits(str) {
    return str.toString().replace(/(\d)(?=(\d\d\d)+([^\d]|$))/g, '$1 ');
}

andreyshr

function sliceText(textNodes, symbols) {
    textNodes.forEach(cur => {
        const text = cur.innerText;
        let sliced = text.slice(0,symbols);

        if (sliced.length < text.length) {
            sliced += '...';
            cur.innerText = sliced;
        }
    });

andreyshr

function randomNumber(min, max) {
    return min + Math.floor(Math.random() * (max + 1 - min));
}

andreyshr

$("#bottom").on("click", function (event) {
	event.preventDefault();
	var id = $(this).attr('href'),
		top = $(id).offset().top;
	$('body,html').animate({
		scrollTop: top
	}, 1200);
});

andreyshr

.visually-hidden {
	position: absolute;
	clip: rect(0 0 0 0);
	width: 1px;
	height: 1px;
	margin: -1px;
}