task1

day1/comments.js

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+//Task 1
+//comments can make code readable
+
+//Task 2
+//comments can make code readable, easy to reuse and informative
+
+//Task3
+/*
+  Welcome to 30DaysOfJavaScript
+*/

day1/datatypes.js

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+//Task 5
+let string = 'this is a string'
+let boolean = true
+let undefined
+let null0 = null
+
+console.log(typeof string)
+console.log(typeof boolean)
+console.log(typeof undefined)
+console.log(typeof null0)

day1/values.js

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+//Task 6
+let hello
+let a
+let hi
+let simple
+
+//Task 7
+let a1 = 'st'
+let js = 1
+let l = false
+let pr = 23.4
+
+//Task 8
+let firstName = 'Arina'
+let lastName = 'Ivleva'
+let country = 'Russia'
+let age = 16
+
+//Task 9
+//VS Code исправляет написание в одну строчку, так что решение записано в комментарии
+
+/*
+  let firstName2 = 'Arina'; let lastName2 = 'Ivleva'; let country2 = 'Russia'; let age2 = 16
+*/
+
+//Task 10
+let myAge = 'I am 25 years old'
+let yourAge = 'You are 30 years old.'
+
+console.log(myAge)
+console.log(yourAge)

day1/variables.js

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+//Task 4
+let string = 'this is a string'
+let boolean = true
+let undefined
+let null0 = null