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CSE MCQs :: Javascript MCQs

Javascript MCQs - Javascript Sockets
Javascript MCQs - javascript Lexical Structures
Javascript MCQs - Javascript Classes and Modules
Javascript MCQs - Javascript Performance Measures
Javascript MCQs - serverside-clientside-scripting
Javascript MCQs - Javascript DOM and Event Handling
Javascript MCQs - Javascript Graphics and Rendering
Javascript MCQs - Javascript Parsing, Benchmarking,Logging
Javascript MCQs - Javascript Invocation,Performance Navigation
  1. Which are usually variables that are used internally in object methods and also are globally visible variables?
    2. A.
    Object properties
    B.
    Variable properties
    C.
    Method properties
    D.
    Internal properties

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  2. The basic difference between JavaScript and Java is
    3. A.
    There is no difference
    B.
    Functions are considered as fields
    C.
    Variables are specific
    D.
    functions are values, and there is no hard distinction between methods and fields

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  3. When a class B can extend another class A, we say that
    4. A.
    A is the superclass and B is the subclass
    B.
    B is the superclass and A is the subclass
    C.
    Both A and B are the superclass
    D.
    Both A and B are the subclass

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  4. Consider the following code snippet

    console.log(p)

    If p is not defined, what would be the result or type of error?
    5. A.
    Zero
    B.
    Null
    C.
    ReferenceError
    D.
    ValueNotFoundError

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  5. Why was "The Good Parts designed as a language subset in JavaScript?
    6. A.
    To improve programmer flexibility
    B.
    To balance the work load of the programmer
    C.
    To create an in-built compiler and interpreter
    D.
    To improve programmer productivity

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  6. Which are the two functions that are not allowed in any secure subset?
    7. A.
    evaluate() and restrict()
    B.
    eval() and the Function() constructor
    C.
    debugger() and test()
    D.
    eval() and debugger()

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  7. To define each of the set classes as a property of the sets object (namespace) for the module, the statement is
    8. A.
    sets = sets.AbstractEnumerableSet.extend();
    B.
    sets.SingletonSet = sets.AbstractEnumerableSet.extend(...);
    C.
    sets.SingletonSet = sets.extend(...);
    D.
    sets = sets.extend(...);

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  8. Consider the following statement containing regular expressions

    var text = "testing: 1, 2, 3"; 

    var pattern = /\d+/g;

    In order to check if the pattern matches, the statement is
    9. A.
    text==pattern
    B.
    text.equals(pattern)
    C.
    text.equals(pattern)
    D.
    pattern.test(text)

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  9. What will be the reaction when a catch clause has no conditionals ?
    10. A.
    Takes it to be 0
    B.
    Takes it to be 1
    C.
    Takes it to be true
    D.
    Takes it to be false

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