"class"

"function"

"object"

"string"

undefined

{ name: "taras", age: 26 }

Error

running index.js running sum.js 3

running sum.js running index.js 3

running sum.js 3 running index.js

running index.js undefined running sum.js

Java очень сложный язык

Java очень простой язык

JavaScript очень сложный язык

JavaScript очень простой язык

{ constructor: ...} { constructor: ...}

{} { constructor: ...}

{ constructor: ...} {}

{ constructor: ...} undefined

{"level":19, "health":90}

{"username": "lydiahallie"}

["level", "health"]

{"username": "lydiahallie", "level":19, "health":90}

Not the same!

They are the same!

ReferenceError

SyntaxError

{ x: 100, y: 20 }

{ x: 10, y: 20 }

{ x: 100 }

ReferenceError

5

Promise {<pending>: 5}

Promise {<fulfilled>: 5}

Error

Promise {<rejected>: 5}

["banana", "apple", "pear", "orange"]

[["banana", "apple"], "pear", "orange"]

["banana", "apple", ["pear"], "orange"]

SyntaxError