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JavaScript MCQ
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- 04th Jul, 2020
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JavaScript MCQ Quiz
1) The provides() function and the exportsobject are used to _________
2) The function stops its execution when it encounters?
3) Which variables are used internally in object methods and are also globally visible?
4) A conditional expression is also called a _______________
5) The behaviour of the instances present of a class inside a method is defined by _________
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6) Among the keywords below, which one is not a statement?
7) The maximum number of global symbols a module can define is ____________
8) The properties() method is a ________
9) A function with no return value is called ___________
10) The class that represents the regular expressions is ________
11) A function with no return value is called ___________
12) What will happen if a return statement does not have an associated expression?
13) The scope of a function is also called as ________
14) JavaScript Code can be called by using ____________
15) The property of JSON() method is __________
16) The method that performs the search-and-replace operation to strings for pattern matching is _______
17) Which keyword is used to define the function in javascript?
18) When a class B can extend another class A, we say that?
19) The method or operator used to identify the array is __________
20) Which of the operator is used to test if a particular property exists or not?
21) JavaScript is a _______________ language.
22) The Crockford’s subset does not include which function in JavaScript?
23) JavaScript is ideal to ________
24) The web development environment (JavaScript) offers which standard construct for data validation of the input entered by the user.
25) How can we make methods available on all objects?
26) What kind of expression is “new Point(2,3)”?
27) What is being imposed on each subset to ensure that it conforms to the subset?
28) The basic difference between JavaScript and Java is _________
29) A linkage of series of prototype objects is called as ________
30) The regular expression to match any one character not between the brackets is __________
31) Why was “The Good Parts” designed as a language subset in JavaScript?
32) Which keyword is used to define the function in javascript?
33) What is a block statement in JavaScript?
34) You can refresh the webpage in JavaScript by using ________
35) The script tag must be placed in __________
36) When does the function name become optional in JavaScript?
37) Why is this keyword not preferred in JavaScript?
38) Which is an equivalent code to invoke a function m of class o that expects two arguments x and y?
39) The “var” and “function” are __________
40) Modules that have more than one item in their API can ________
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