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Questions and Answers
In the JavaScript course described, what is assumed knowledge for building projects?
Which part of the front end developer career path is the JavaScript course a part of?
What is the purpose of the passenger counter app built in the course?
What is the recommended file to use for writing JavaScript code, despite the course demonstrating writing code directly in an HTML file?
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How can the console be accessed in web browsers for writing and running JavaScript code as well as debugging?
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What is the purpose of using the 'console.log()' function in JavaScript?
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What keyword is used to create and assign values to variables in JavaScript?
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What will happen if a console log statement is placed before a variable declaration?
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Study Notes
- The text is a description of a JavaScript course taught by the founder of Scrimba.com, suitable for freeCodeCampers.
- The course includes over 100 coding challenges that can be solved locally or on Scrimba's interactive platform.
- No prior JavaScript knowledge is required, but HTML and CSS knowledge is assumed for building projects.
- The course is part of a larger front end developer career path offered by Scrimba.
- The course covers building three apps: a subway passenger counter, a blackjack game, and a lead tracker Chrome extension.
- The passenger counter app is built to help the learner understand the basics of JavaScript.
- The course demonstrates writing JavaScript code directly in an HTML file, but it's recommended to use an index.js file instead.
- The learner's first lines of JavaScript code will be written in the index.js file.
- The course encourages the learner to create their first JavaScript variables and use the console for debugging.- The console is a tool available in web browsers for developers, used for writing and running JavaScript code as well as debugging.
- To access the console, right-click on a webpage and select "Inspect," then click on the "Console" tab.
- The console can be used to log output by using the "console.log()" function and passing in the variable or value to be logged.
- Variables can be created and assigned values using the "let" keyword.
- JavaScript can be used as a calculator for mathematical operations.
- Variables can be used instead of hard-coded numbers in real-world code bases.
- If a console log statement is placed before a variable declaration, a reference error will occur as the variable has not been initialized yet.
- Advanced mathematical operations can be performed in JavaScript.
- To comment out multiple lines of code, use the shortcut Ctrl+/ or Cmd+/ (on a Mac).
- To convert a human age into dog years, create two variables for the human age and the human-dog ratio (7), then multiply the two variables together.
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Description
Learn JavaScript with over 100 coding challenges taught by the founder of Scrimba.com, suitable for beginners. Cover building apps like a subway passenger counter, a blackjack game, and a Chrome extension. Topics include variables, debugging using the console, mathematical operations, and more.
