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Javascript Typescript Angular With Complete Solutions Latest Update $13.99   Add to cart

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Javascript Typescript Angular With Complete Solutions Latest Update

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Javascript Typescript Angular With Complete Solutions Latest Update

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  • October 21, 2024
  • 12
  • 2024/2025
  • Exam (elaborations)
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Solution 2024/2025
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Javascript/Typescript/Angular With Complete
Solutions Latest Update


JavaScript ANS✔✔ the most commonly used client-side scripting language. It
is a high-level, multi-paradigm, interpreted programming language used to
create dynamic webpages. When the browser loads a webpage, the browser
interprets javascript code in it and executes it.



Types of JavaScript (2) ANS✔✔ 1. Internal

2. External



Dynamically Typed Language ANS✔✔ JavaScript does not declare types and
a variable you had previously stored a string in might hold a number. This
also means that that there is no static type checking available, leading to
potential issues where a function can return a value of multiple types.

, Solution 2024/2025
Pepper
Note: also called Loosely-Typed Language



JavaScript Data Types (7) ANS✔✔ 1. string

2. number

3. boolean

4. null

5. undefined

6. object

7. Symbol (ES6)



Variable Scope ANS✔✔ In JavaScript by default variables defined outside
any function, block, or module have global scope. The global scope
variables are accessed everywhere in the application.

Note: local scope is available within block and using the let keyword



JavaScript Function ANS✔✔ a group of reusable code which can be called
anywhere in the program. A JavaScript function is defined using the function
keyword. The syntax for creating a function:

function name(a, b){ ... code here ...}

Note: Similar to Java, JS is pass by value



JS Callback Functions ANS✔✔ a function that gets executed after another
function completes the execution. It helps us develop asynchronous
JavaScript code and keeps us safe from problems and errors.



JS Closure Functions ANS✔✔ a function that remembers and accesses the
variables and arguments of its outer function even after the function return.

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