JavaScript Skill Overview

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    Category: Technical > Programming languages

Description

JavaScript is a versatile programming language primarily used for enhancing web pages to provide a more interactive user experience. It allows developers to create dynamic content, handle user input, manage data, and even build full-fledged web applications. JavaScript skills range from understanding basic syntax, variables, and control structures, to more advanced topics like asynchronous programming, design patterns, and server-side development with Node.js. Mastery of JavaScript involves deep knowledge of its internals, performance optimization, state management libraries, and build tools. With its wide use in both front-end and back-end development, proficiency in JavaScript is a highly valued skill in the tech industry.

Stack

JAM,

Expected Behaviors

  • Fundamental Awareness

    At this level, individuals have a basic understanding of what JavaScript is and its syntax. They are familiar with variables, data types, basic operators, control structures like if, else, switch, and basic functions. However, they may not be able to write complex programs yet.

  • Novice

    Novices can write simple JavaScript programs. They understand arrays, objects, loops like for and while, and can perform basic DOM manipulation. They also have an understanding of event handling and basic error handling and debugging techniques.

  • Intermediate

    Intermediate users are proficient in using advanced JavaScript features like closures, prototypes, JSON, AJAX, and asynchronous programming. They have experience with ES6 features and regular expressions. They also understand object-oriented programming in JavaScript.

  • Advanced

    Advanced users are proficient in using advanced ES6+ features and understand JavaScript design patterns. They can write unit tests for their code and understand functional programming concepts. They have experience with modern front-end frameworks/libraries and server-side JavaScript with Node.js.

  • Expert

    Experts have a deep understanding of JavaScript internals and the event loop. They are proficient in performance optimization, memory management, and can build full-stack JavaScript applications. They have experience with complex state management libraries, advanced testing techniques, and tools, as well as JavaScript build tools and transpilers.

Micro Skills

Awareness of JavaScript as a programming language

Knowledge of the role of JavaScript in web development

Understanding of the difference between JavaScript and other programming languages

Familiarity with JavaScript keywords

Understanding of JavaScript statements

Knowledge of JavaScript comments

Ability to write simple JavaScript expressions

Understanding of how to declare variables

Knowledge of different data types in JavaScript

Ability to assign values to variables

Understanding of variable scope

Knowledge of arithmetic operators

Understanding of assignment operators

Familiarity with comparison operators

Knowledge of logical operators

Understanding of conditional statements

Ability to use if, else if, else statements

Knowledge of switch case statement

Understanding of how to define a function

Knowledge of function parameters and arguments

Ability to call a function

Understanding of return statement

Understanding of how to structure a program

Knowledge of how to use console.log for output

Ability to use basic arithmetic and string operations

Understanding of how to use comments

Ability to declare and initialize arrays and objects

Understanding of how to access array elements and object properties

Knowledge of basic array methods like push, pop, shift, unshift

Understanding of how to iterate over arrays and objects

Understanding of how to use for loop

Knowledge of how to use while and do-while loops

Ability to control loop execution with break and continue

Understanding of nested loops

Understanding of how to select HTML elements

Ability to change element content and attributes

Knowledge of how to create and remove elements

Understanding of how to handle form inputs

Ability to attach event listeners to elements

Understanding of event propagation (bubbling and capturing)

Knowledge of different types of events (click, load, mouse events, keyboard events)

Ability to prevent default event behavior

Understanding of how to use console.log for debugging

Ability to use try-catch blocks for error handling

Knowledge of how to use the browser's developer tools

Understanding of common JavaScript errors

Understanding of variable scoping in JavaScript

Understanding of execution context and the call stack

Creating closures

Using closures

Understanding of prototypes in JavaScript

Implementing prototype-based inheritance

Adding methods to prototypes

Adding properties to prototypes

Understanding of JSON syntax

Working with JSON data

Parsing JSON

Stringifying JSON

Ability to destructure objects

Ability to destructure arrays

Using spread operator

Using rest operator

Writing async functions

Using await keyword

Using try/catch blocks

Handling rejected promises

Understanding of global and function execution contexts

Understanding of block scope and function scope

Understanding of closure

Experience with Chrome DevTools

Understanding of JavaScript performance metrics

Understanding of unidirectional data flow

Experience with Redux or Vuex

Understanding of Node.js architecture

Experience with Express.js

Experience with Jest or Mocha

Understanding of mocking and stubbing

Understanding of entry, output, loaders, plugins in Webpack

Experience with Babel

Tech Experts

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StackFactor Team
We pride ourselves on utilizing a team of seasoned experts who diligently curate roles, skills, and learning paths by harnessing the power of artificial intelligence and conducting extensive research. Our cutting-edge approach ensures that we not only identify the most relevant opportunities for growth and development but also tailor them to the unique needs and aspirations of each individual. This synergy between human expertise and advanced technology allows us to deliver an exceptional, personalized experience that empowers everybody to thrive in their professional journeys.
  • Expert
    3 years work experience
  • Achievement Ownership
    Yes
  • Micro-skills
    79
  • Roles requiring skill
    26
  • Customizable
    Yes
  • Last Update
    Fri May 31 2024
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