What is an undefined value in JavaScript?


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Why we use java script when java also supports validation?

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What is escape() function?

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What are the types of variables in javascript?

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

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List some design patterns in javascript?

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How to open a window with no toolbar, but with the location object?

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different between web server and application server

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What does question mark mean in react?

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