Exam (elaborations)
Javascript Typescript Angular With Complete Solutions Latest Update
- Course
- Angular
- Institution
- Stanford University
Javascript Typescript Angular With Complete Solutions Latest Update
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Solution 2024/2025Pepper
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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