Explain few difference between null, undefined or undeclared javascript variable?

913

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List different ways of empty an array in javascript?

854

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How to add a new property in existing function javascript?

962

---

How to encode and decode a url in javascript?

1060

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What does the instanceof operator do?

1012

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What is the difference between let and var?

1011

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What are different types of scope chain available in javascript?

869

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What is difference between local and global scope in javascript ?

1020

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What is output of undefined * 2 in javascript?

928

---

Explain function hoisting in javascript?

895

---

What is difference between array.splice() and array.slice() method in javascript?

1001

---

List some design patterns in javascript?

872

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How host objects are different from native objects in javascript?

1004

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How to redirect a page to another page in javascript?

979

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What is the difference between ‘let’ and ‘const’?

1041

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