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JavaScript Interview Questions
Questions Answers Views Company eMail

Which built-in method returns the calling string value converted to lower case?

 724

Define unescape() function?

 540

Explain the working of timers in javascript?

 493

Which built-in method reverses the order of the elements of an array?

 533

Define escape() function?

 519

What are the variable naming conventions in javascript?

 488

How to print a web page using javascript?

 515

Which built-in method removes the last element from an array and returns that element?

 496

Which built-in method returns the length of the string?

 537

How to create a cookie using javascript?

 521

Which type of variable among global and local, takes precedence over other if names are same?

 504

Which built-in method adds one or more elements to the end of an array and returns the new length of the array?

 823

Which built-in method returns the calling string value converted to upper case?

 527

Give an example of closure?

 532

What is purpose of onerror event handler in javascript?

 492

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Un-Answered Questions { JavaScript }

How can you do a character count in javascript?

480

What is var and let in javascript?

504

Which built-in method returns the character at the specified index?

741

What is triple dot in javascript?

523

Explain the difference between call() and apply()?

514




What is external javascript?

541

Explain how to write class methods vs. Instance methods.

530

What is difference between local variable and global?

474

Do I need javascript enabled?

489

What is null in js?

507

What is "strict mode" and how is it used in JavaScript?

545

What is use of settimeout function in javascript?

521

Why jquery is used instead of javascript?

447

Explain javascript debounce function?

556

What is a boolean in javascript?

511

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