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Javascript Questions Set 234:

Quiz Mode

How many WebSocket events are available?

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Which operator is used to check if a particular property exists or not?

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How many properties are associated with the Response event in web performance monitoring?

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What does the Minify process return to the script tag?

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How can you clone an element?

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What is the output of the following JavaScript code?

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function demo()
{
 var first_variable = "";
 document.getElementById("first_function").innerHTML = Boolean(first_variable);
}

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Which component in a Redux application keeps track of all the registered reducers and exposes a reduce() function?

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What will be the output of the following code snippet?

<script type="text/javascript"> var a=20; var b=7; var result = eval("a+b"); document.write(result); </script>

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  The basic purpose of the toLocaleString() is to _________ 

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