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How Mobile Internet Works (4G / 5G)

From SIM card to mobile tower to internet server – learn how mobile data works.
Simple explanation for students and beginners.

🟢 Node.js Cheat Sheet

⚙️ Core Node.js concepts
🌐 Modules, events & APIs
🚀 Backend fundamentals
💼 Interview & project ready

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Computer Networking Notes.

In order to know how thing works on the Internet, you must cope with these terms with proper, clear concepts in each part.

PHP notes! Learn Complete PHP for free! 😇

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JavaScript Methods Every Developer Should Master

➤ Elevate your coding skills with these must-know JavaScript methods
↳ Handle strings, arrays, math, dates, JSON, and promises.
↳ These tools are your ticket to cleaner, more efficient code.

➤ String Methods
↳ slice(start, end) – Extract a portion of a string.
↳ replace(searchValue, newValue) – Replace specified text.
↳ toLowerCase() & toUpperCase() – Change case.
↳ includes(searchString) – Check for a substring.
↳ trim() – Remove whitespace.
↳ split(delimiter) – Convert a string into an array.

➤ Array Methods
↳ map(callback) – Transform array elements.
↳ filter(callback) – Filter elements based on conditions.
↳ forEach(callback) – Iterate over array elements.
↳ find(callback) – Find the first matching element.
↳ some(callback) & every(callback) – Test conditions across elements.

➤ Math Methods
↳ Math.round(value) – Round to the nearest integer.
↳ Math.floor(value) & Math.ceil(value) – Round down or up.
↳ Math.random() – Generate random numbers.
↳ Math.max(...numbers) & Math.min(...numbers) – Find extremes.

➤ Date Methods
↳ new Date() – Create a new date object.
↳ getFullYear() – Retrieve the year.
↳ getMonth() – Get the month (0-11).
↳ toLocaleDateString() – Format as a readable string.
↳ getTime() – Get a timestamp in milliseconds.

➤ JSON Methods
↳ JSON.stringify(object) – Convert an object to a string.
↳ JSON.parse(jsonString) – Turn a string back into an object.

➤ Promise Methods
↳ Promise.all([promises]) – Resolve multiple promises together.
↳ Promise.race([promises]) – Resolve once the fastest promise resolves.
↳ then(callback) – Handle success.
↳ catch(callback) – Manage errors.
↳ finally(callback) – Execute cleanup code.

➤ Document attached below
↳ Credits - Respective Owners