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JavaScript MCQ
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- 04th Jun, 2022
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JavaScript MCQ with Answers
Following are mostly asked Javascript MCQ test that are designed for professionals like you to crack you interviews. You can take this Javascript online test before appearing to you real interview. This Javascript quiz there are around 30+ multiple choice questions on Javascript with four options.
1) The web development environment (JavaScript) offers which standard construct for data validation of the input entered by the user.
2) The script tag must be placed in __________
3) JavaScript is ideal to ________
4) JavaScript Code can be called by using ____________
6) Which of the operator is used to test if a particular property exists or not?
7) JavaScript is a _______________ language.
8) A conditional expression is also called a _______________
9) What is a block statement in JavaScript?
11) Among the keywords below, which one is not a statement?
12) A linkage of series of prototype objects is called as ________
13) The method or operator used to identify the array is __________
14) When does the function name become optional in JavaScript?
15) A function with no return value is called ___________
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16) Which keyword is used to define the function in javascript?
17) What will happen if a return statement does not have an associated expression?
18) A function with no return value is called ___________
19) The function stops its execution when it encounters?
20) Which keyword is used to define the function in javascript?
21) Which is an equivalent code to invoke a function m of class o that expects two arguments x and y?
22) The behaviour of the instances present of a class inside a method is defined by _________
23) The basic difference between JavaScript and Java is _________
24) The property of JSON() method is __________
25) When a class B can extend another class A, we say that?
26) Which variables are used internally in object methods and are also globally visible?
27) The class that represents the regular expressions is ________
28) How can we make methods available on all objects?
29) You can refresh the webpage in JavaScript by using ________
30) The maximum number of global symbols a module can define is ____________
31) The scope of a function is also called as ________
32) Modules that have more than one item in their API can ________
33) The provides() function and the exportsobject are used to _________
34) The properties() method is a ________
35) The regular expression to match any one character not between the brackets is __________
36) The method that performs the search-and-replace operation to strings for pattern matching is _______
37) The Crockford’s subset does not include which function in JavaScript?
38) What is being imposed on each subset to ensure that it conforms to the subset?
39) Why was “The Good Parts” designed as a language subset in JavaScript?
40) Why is this keyword not preferred in JavaScript?
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