# JS-Basics for Dev League Prep ## Getting Started 1. **Fork** this repository 1. **clone** this repo from your personal GitHub account. - Copy the SSH address on the page - Run the command: `$ git clone [YOUR SSH ADDRESS]` to clone this repo onto your computer. 1. Navigate into the exercise folder, e.g. `$ cd prep-js-basics`. 1. Run the command: `$ npm install` to get all other files needed to run the tests. 1. Your work will be entered into the file named `index.js` 1. Run your tests with the command `$ npm test`. - You will need to enter this command each time you want to run the tests. ## Exercises 1. **Variables with a String as their value** Declare variables named `firstName`, `lastName`, and `birthPlace`. Fill out the values for these with your own data or make it up. It should be a String. 1. **Variables with a Number as their value** Declare variables named `favoriteNumber`, `currentYear`, and `thatOnePrinceSong`. Their values should be a Number. 1. **Variables with Boolean values** Declare variables named `isDaytime`, `isLeftHanded`, `inHawaii`, and `isHappyCoding`. Their values should be a Boolean. 1. **Variables with null** Declare variables named `enrolledAtDevLeague` and `completedFridayPrep`. Their values should be a Null value. 1. **Variables with an Array for it's value** Declare a variable named `westCoast` which is an Array. This Array contains the names of all the states which can be found along the west coast of The United States. 1. **Variables with an Array for it's value** Declare a variable named `evenNumbers` which is an Array. This Array contains numbers that are considered 'even values'. Have at least ten even values in this array. 1. **Variables with the outcome of an arithmetic operation** Declare a variable named `sumOfNumbers` which is a Number. This Number contains the result of performing an arithmetic operation on two numbers. Have this variable store the result of adding 3 numbers of your choosing. Extend this behavior to include subtraction, multiplication and division. 1. **Variables with the outcome of a comparison operation** Declare a variable named `isEqual` which is a Boolean. This Boolean contains the result of performing a comparison to test if two strings are equal. We want to compare the two strings "Tacocat" and "tacocat" and `console.log()` the result. *Note:* There is no test which tests your console.log()'s output'. Also, there are zero tests for the BONUS below. *Bonus:* See if you can come up with a few examples of double comparison operator(==) vs triple comparison operator(===). 1. **Variables with the outcome of an assignment operation** Declare a variable named `generalContainer`. This variable will be used to store multiple types of values as we assign them to show how variables in JavaScript are not bound to a single data type and can change values. Write 5 different assignment statements and `console.log()` the value of the variable after each assignment statement to show the current value. *note:* The tests for this section cannot test your variable as it changes, it can only test that you declared the variable by giving it the right name. 1. **Declare Functions: jump** Declare a Function named `jump` which takes a single argument, `height`. This function should return a String, "You jumped 9 feet high!" if invoked in this way, `jump(9)` Store the return value to a variable named `jumpResult` and use console.log to inspect the value which was returned by your function. 1. **Declare Functions: cook** Declare a Function named `cook` which a takes three arguments/parameters, `ingredient1`, `ingredient2`, `recipeName`. This function should return a String along the lines of, "Tomatoes and Cheese make a Pizza!" if invoked in this way, `cook("Tomatoes", "Cheese", "Pizza");` ## Testing your work Use the command `$ npm test` to run tests which will validate your work. # References - [slides](https://slides.com/sgnl/js-basics) # js-basics # js-basics # js-basics