Dhruvang Gajjar dhruvangg

A JavaScript specialist with complete knowledge & experience of Firebase, Core PHP and Laravel. Strong in Logic, Project Planning and Strategy.

dhruvangg / Java Vs. NodeJS

Created January 8, 2026 14:36

	### Performance

	- I/O Operations: NodeJS outperform Java by up to several hundred percent under high concurrency for I/O-heavy tasks
	- CPU-bound tasks: Java outperformed Node.js by 30–68% in pure computation tasks like mage processing, video encoding, or scientific calculations
	- Startup time and latency: Node.js often bootstraps quicker, for low-latency requirements (e.g. in serverless or microservice environments)

	### Scalability

	- Concurrency model: Node.js services often require explicit cluster/process management for multi-core scaling, whereas Java threads auto-use available CPUs
	- Horizontal vs vertical scaling: Node.js’s small memory footprint and stateless model make it easy to scale horizontally in a microservices/cloud environment. Many Node.js instances can run on cheap servers or serverless functions. Java apps typically use more RAM/CPU per instance, so scaling often involves larger machines or additional cluster nodes.

dhruvangg / Redux + RTK + Zustand + React Query

Last active January 8, 2026 13:45

	Need structure, debugging, team safety → Redux Toolkit
	Need speed, simplicity, UI state → Zustand
	Need API caching → Redux Toolkit (RTK Query)
	Building MVP → Zustand
	Enterprise app → Redux

	React Query → ALL server state
	Zustand → UI + ephemeral client state
	Context → ultra-local state only

dhruvangg / settibgs.json

Created June 29, 2022 08:47

VS Code Settings

	{
	"terminal.integrated.profiles.windows": "C:\\Windows\\System32\\cmd.exe",
	"git.ignoreMissingGitWarning": true,
	"files.autoSave": "onFocusChange",
	"editor.formatOnSave": true,
	"explorer.confirmDelete": false,
	"terminal.integrated.windowsEnableConpty": false,
	"javascript.updateImportsOnFileMove.enabled": "always",
	"blade.format.enable": true,
	"files.associations": {

dhruvangg / matchArray_any.js

Created January 12, 2021 11:06

	let a = [1,2,3],
	b = [1,2,3,4],
	c = [8,9];

	let checkAny = (arr, target) => target.some(el => arr.includes(el));

	console.log(checkEvery(b, a)) // true
	console.log(checkEvery(c, a)) // false

dhruvangg / matchArray_every.js

Last active January 12, 2021 11:04

	let a = [1,2,3],
	b = [1,2,3,4],
	c = [1,2];

	let checkEvery = (arr, target) => target.every(el => arr.includes(el));

	console.log(checkEvery(b, a)) // true
	console.log(checkEvery(c, a)) // false

dhruvangg / isOnScreen.js

Last active May 29, 2020 07:50

Check Element is in Viewport or not

	$.fn.isOnScreen = function(){
	var win = $(window);
	var viewport = {
	top : win.scrollTop(),
	left : win.scrollLeft()
	};
	viewport.right = viewport.left + win.width();
	viewport.bottom = viewport.top + win.height();
	var bounds = this.offset();
	bounds.right = bounds.left + this.outerWidth();

dhruvangg / analog_clock.html

Created June 2, 2018 09:07 — forked from janx/analog_clock.html

html5 svg analog clock

	<!DOCTYPE HTML>
	<html>
	<head>
	<title>Analog Clock</title>
	<script>
	function updateTime() { // Update the SVG clock
	var now = new Date();
	var sec = now.getSeconds();
	var min = now.getMinutes();
	var hour = (now.getHours() % 12) + min/60;

dhruvangg / citystategeo.js

Created February 23, 2018 08:29 — forked from danasilver/citystategeo.js

Get only city and state from Google Maps API Reverse Geocoder

	if (window.navigator.geolocation) {
	navigator.geolocation.getCurrentPosition(function (position) {
	var lat = position.coords.latitude,
	lng = position.coords.longitude,
	latlng = new google.maps.LatLng(lat, lng),
	geocoder = new google.maps.Geocoder();
	geocoder.geocode({'latLng': latlng}, function(results, status) {
	if (status == google.maps.GeocoderStatus.OK) {
	if (results[1]) {
	for (var i = 0; i < results.length; i++) {