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Day 1 - Introduction
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Exercise Level 1
Exercise Level 1
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Write a single line comment which says, comments can make code readable
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Write another single comment which says, Welcome to 30DaysOfJavaScript
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Write a multiline comment which says, comments can make code readable, easy to reuse and informative
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Create a variable.js file and declare variables and assign string, boolean, undefined and null data types
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Create datatypes.js file and use the JavaScript typeof operator to check different data types. Check the data type of each variable
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Declare four variables without assigning values
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Declare four variables with assigned values
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Declare variables to store your first name, last name, marital status, country and age in multiple lines
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Declare variables to store your first name, last name, marital status, country and age in a single line
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Declare two variables myAge and yourAge and assign them initial values and log to the browser console.
I am 25 years old.
You are 30 years old.
Exercise Level 1
- Write a single line comment which says, comments can make code readable
// comments can make code readable
- Write another single comment which says, Welcome to 30DaysOfJavaScript
//Welcome to 30DaysOfJavaScript
- Write a multiline comment which says, comments can make code readable, easy to reuse and informative
/* comments can make code readable,
easy to reuse and informative */
- Create a variable.js file and declare variables and assign string, boolean, undefined and null data types
//variable.js
let string = 'nevzat'
let number = 25
let boolean = true
let nulll = null
let any; //undefined
5.Create datatypes.js file and use the JavaScript typeof operator to check different data types. Check the data type of each variable
//variable.js
let string = 'nevzat'
let number = 25
let boolean = true
let nulll = null
let any;
console.log(typeof (string) ) //String
console.log(typeof (number)) //Number
console.log(typeof (boolean)) //Boolean
console.log(typeof (nulll)) //Object
console.log(typeof (any)) //Undefined
- Declare four variables without assigning values
let variable1;
let variable2;
var variable3;
let variable4;
- Declare four variables with assigned values
variable1 = "nevzat"
variable2 = "ATALAY"
variable3 = true;
variable4 = 25;
- Declare variables to store your first name, last name, marital status, country and age in multiple lines
let firstName = "nevzat"
let lastName = "atalay"
let old = 25
let isMarried = true
- Declare variables to store your first name, last name, marital status, country and age in a single line
let name = "nevzat",surName="atalay",age = 25, married = true
- Declare two variables myAge and yourAge and assign them initial values and log to the browser console.
let myAge= 25
let yourAge = 22
console.log("I am " + " " + myAge + " " + "years old.") // I am 25 years old.
console.log("You are" + " " + yourAge + " " + "years old.") // You are 22 years old.