What does two exclamation marks mean in javascript?


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More JavaScript Interview Questions

How will you create new object in javascript?

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Explain the for-in loop?

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What is output of “20” + 20? In javascript?

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Is javascript a dynamic language?

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How do you know if a set of points is a function?

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Methods get and post in html forms - what's the difference?

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write a program to generte a harmonic series 1+1/2+1/3+1/4+1/5 upto 15 terms.

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What are all the types of Pop up boxes available in JavaScript?

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Does javascript support automatic type conversion, if yes give example.

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What is the use of a set object in javascript?

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What are the distinct types of error name values?

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What is callback?

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