Dziuperman

Deverus Vue.js Style Guide

Guide for developing Vue.js applications.

v. 0.0.1

Vue.js is an amazing framework, which can be as powerful as Angular or React, the two big heavy hitters in the world of front-end frameworks.

However, most of Vue's ease-of-use is due to the use of Observables - a pattern that triggers re-renders and other function calls with the reassignment of a variable.

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

	<?
	/***
	Получаем массив коллекций, отфильтрованных умным фильтром.
	Сравниваются массивы чекнутых свойств фильтра и свойства
	всех товаров
	***/
	/* Start Массив отфильтрованных коллекций */
	if (CModule::IncludeModule("iblock")) {
	$arSelect = Array("ID", "IBLOCK_ID", "NAME", "PROPERTY_231", "PROPERTY_232");
	$arFilter = Array("IBLOCK_ID" => 17, "ACTIVE_DATE" => "Y", "ACTIVE" => "Y");

	<?php

	namespace Engine\Core\Database;

	use \PDO;
	use Engine\Core\Config\Config;

	class Connection
	{
	private $link;

	axios({
	url: 'http://localhost:5000/static/example.pdf',
	method: 'GET',
	responseType: 'blob', // important
	}).then((response) => {
	const url = window.URL.createObjectURL(new Blob([response.data]));
	const link = document.createElement('a');
	link.href = url;
	link.setAttribute('download', 'file.pdf');
	document.body.appendChild(link);