JavaScript is an expressive programming language that powers a tremendous amount of the interactivity on the web, and increasingly powers servers behind the scenes. JavaScript written to run in a browser is often called "front-end" programming, and server-side JavaScript is usually considered "back-end" programming. In particular in front-end programming, JavaScript works hand-in-hand with HTML and CSS.
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In Atom (or your preferred text editor), create a new file and name it main.js
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The '.js' file extension name indicates that it is a JavaScript file
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Create a new HTML file and name it index.html
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Link your JS file inside of your HTML file
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The line below should be right before your tag. This is because you want all of your other content (HTML and CSS) to run in the browser first.
<script src="main.js"></script>
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The below function does not work. The variable twoPlusTwo gets set to undefined. Refactor the function to make it work.
function addNumbers(numberA, numberB) { console.log(numberA + numberB); } var twoPlusTwo = addNumbers(2, 2) console.log(twoPlusTwo) // 4 -
Write a function called yell that logs out an uppercase version of a string. Write a function called yell10 that uses your yell function to log out an uppercase version of a string 10 times.
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Write a function called longest that returns the longest of two input strings or arrays.
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Write a function called isVowel that takes a character (i.e. a string of length 1) and returns true if it is a vowel, uppercase or lowercase. The function should return false if the character is not a vowel.