Podcast
Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App
Questions and Answers
Which of the following is NOT a data type in JavaScript?
Which of the following is NOT a data type in JavaScript?
- String
- Float (correct)
- Boolean
- Object
What does the '=== operator' in JavaScript do?
What does the '=== operator' in JavaScript do?
- Checks if two values are equal in type, but not necessarily in value
- Checks if two values are equal in value and type (correct)
- Checks if two values are equal in value, but not necessarily in type
- Checks if two values are equal in value, but not necessarily in type
What is the purpose of the 'querySelector' method in JavaScript?
What is the purpose of the 'querySelector' method in JavaScript?
- To select the first element that matches a specified CSS selector (correct)
- To select a random element that matches a specified CSS selector
- To select all elements that match a specified CSS selector
- To select the last element that matches a specified CSS selector
Flashcards are hidden until you start studying
Study Notes
JavaScript Fundamentals
- JavaScript has several data types, but Symbol is not one of them (available data types include Number, String, Boolean, Null, Undefined, Object, and Array).
Comparator Operators
- The '===' operator in JavaScript is a strict equality operator, which checks both the value and data type of two variables for equality.
Document Object Model (DOM) Methods
- The 'querySelector' method in JavaScript returns the first element within a document that matches the specified selector or group of selectors.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
