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JavaScript Quiz
Which of the following is NOT a valid JavaScript variable name?
Which of the following is NOT a valid JavaScript variable name?
Anonymous Quiz
15%
myVariable
55%
2ndVariable
22%
$variable
8%
_variable
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React Quiz
What does the React propType system help with?
What does the React propType system help with?
Anonymous Quiz
15%
Styling components
64%
Type checking for component props
17%
State management
5%
Routing
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JavaScript Quiz
Which operator is used to compare the value and data type in JavaScript?
Which operator is used to compare the value and data type in JavaScript?
Anonymous Quiz
6%
=
38%
==
52%
===
3%
!=
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JavaScript Quiz
What is the result of "5" - 2 in JavaScript?
What is the result of "5" - 2 in JavaScript?
Anonymous Quiz
7%
7
37%
3
29%
52
27%
Error
❤2
React Quiz
What is JSX in React?
What is JSX in React?
Anonymous Quiz
83%
A syntax extension for JavaScript
5%
A data storage format
12%
A server-side rendering technique
0%
A code editor
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JavaScript Quiz
What is the purpose of the "else" statement in JavaScript?
What is the purpose of the "else" statement in JavaScript?
Anonymous Quiz
9%
To define a function
11%
To declare a variable
73%
To execute a block of code unconditionally
8%
To create a loop
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React Quiz
What is a functional component in React?
What is a functional component in React?
Anonymous Quiz
64%
A component that uses functions for rendering
19%
A component that has a functional design
4%
A component that doesnt render UI
13%
A component that handles state management
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JavaScript Quiz
Which of the following is NOT a valid JavaScript variable name?
Which of the following is NOT a valid JavaScript variable name?
Anonymous Quiz
8%
myVariable
60%
2ndVariable
21%
$variable
10%
_variable
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JavaScript Quiz
What is the purpose of the "else" statement in JavaScript?
What is the purpose of the "else" statement in JavaScript?
Anonymous Quiz
8%
To define a function
9%
To declare a variable
78%
To execute a block of code unconditionally
5%
To create a loop
React Quiz
Which method is called when a React component is rendered for the first time?
Which method is called when a React component is rendered for the first time?
Anonymous Quiz
21%
componentDidUpdate
34%
render
29%
componentWillMount
16%
componentDidMount
❤1👍1