1. ____ cookies remain available only for the current browser session.

2. Through the use of the ____ plug-in, a webpage can provide a user with an interactive experience.

3. The ________ loads java bytecode to the memory.

4. The ____ property of the location object contains a url?s query or search parameters.

5. A(n) ____ comment hides multiple lines of code.

6. A plug-in either opens in its own external window or runs within a web page as a(n) _____.

7. A pattern that matches the beginning or end of a line is called a(n) ____.

8. When using the console.log() method to trace bugs, it can be helpful to use a ____ program.

9. In the google maps api, the ____ constructor creates a map object.

10. If nothing within a while loop ever causes the condition to become false, a(n) ________ may occur.

11. What will this code log to the console?

12. Given this code, which statement will evaluate to false? const a = { x: 1 }; const b = { x: 1 };

13. How can you attempt to access the property a.b on obj without throwing an error if a is undefined? let obj = {};

14. What will be logged to the console? console.log(typeof 'blueberry');

15. Which JavaScript loop ensures that at least a singular iteration will happen?

16. Which choice is not an array method?

17. Which method call is chained to handle a successful response returned by fetch()?

18. Which statement correctly imports this code from some-file.js? //some-file.js Export const printMe = (str) => console.log(str);

19. Which choice is a valid example of an arrow function, assuming c is defined in the outer scope?

20. Which statement can take a single expression as input and then look through a number of choices until one that matches that value is found?

21. What is the output of this code? let x = 6 + 3 + '3'; console.log(x);

22. If your app receives data from a third-party API, which HTTP response header must the server specify to allow exceptions to the same-origin policy?

23. What is the difference between the map() and the forEach() methods on the Array prototype?

24. How do you remove the property name from this object? const foo = { name: 'Albert', };

25. What is the output of this code? var obj; console.log(obj);

26. Which class-based lifecycle method would be called at the same time as this effect Hook? useEffect(() => { // do things }, []);

27. Which event is fired on a text field within a form when a user tabs to it, or clicks or touches it?

28. What is the HTTP verb to request the contents of an existing resource?

29. Why would you choose an asynchronous structure for your code?

30. Which statement selects all img elements in the DOM tree?

31. Which statement represents the starting code converted to an IIFE?

32. What is the result of running the statement shown?

33. Which method is called automatically when an object is initialized?

34. If you attempt to call a value as a function but the value is not a function, what kind of error would you get?

35. How do you add a comment to JavaScript code?

36. Which concept is defined as a template that can be used to generate different objects that share some shape and/or behavior?

37. Which choice is valid example for an arrow function?

38. Which statement is used to skip iteration of the loop?

39. Which method do you use to attach one DOM node to another?

40. Which method cancels event default behavior?

41. Which of these is a valid variable name?

42. Which expression evaluates to true?

43. Why might you choose to make your code asynchronous?

44. Which choice is an incorrect way to define an arrow function that returns an empty object?

45. How does the forEach() method differ from a for statement?

46. Which collection object allows unique value to be inserted only once?

47. Which statement references the DOM node created by the code shown?

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48. The following program has a problem. What is it? var a; var b = (a = 3) ? true : false;

49. What's one difference between the async and defer attributes of the HTML script tag?

50. Which keyword is used to create an error?

51. What will the value of y be in this code: const x = 6 % 2; const y = x ? 'One' : 'Two';

52. Which choice is not a unary operator?

53. How many prototype objects are in the chain for the following array? let arr = [];

54. Your code is producing the error: TypeError: Cannot read property 'reduce' of undefined. What does that mean?

55. Which statement is true about Functional Programming?

56. What type of function can have its execution suspended and then resumed at a later point?

57. What does the following expression evaluate to? [] == [];

58. How do you import the lodash library making it top-level Api available as the "_" variable?

59. Which statement is true about the "async" attribute for the HTML script tag?

60. Why is it usually better to work with Objects instead of Arrays to store a collection of records?

61. Which variable is an implicit parameter for every function in JavaScript?

62. Which of the following is not a keyword in JavaScript?

63. Which of the following values is not a Boolean false?

64. Which Variable-defining keyword allows its variable to be accessed (as undefined) before the line that defines it?

65. Why would you include a "use strict" statement in a JavaScript file?

66. Which statement sets the Person constructor as the parent of the Student constructor in the prototype chain?

67. Which of the following operators can be used to do a short-circuit evaluation?

68. 0 && hi

69. What is one difference between collections created with Map and collections created with Object?

70. Which Object method returns an iterable that can be used to iterate over the properties of an object?

71. When would you use a conditional statement?

72. Which method converts JSON data to a JavaScript object?

73. Which property references the DOM object that dispatched an event?

74. What is the result of running this statement? Console.log(typeof 42);

75. How would you reference the text 'avenue' in the code shown? Let roadTypes = ['street', 'road', 'avenue', 'circle'];

76. You need to match a time value such as 12:00:32. Which of the following regular expressions would work for your code?

77. How does a function create a closure?

78. Which statement creates a new object using the Person constructor? Which statement creates a new Person object called "student"?

79. Which statement is the correct way to create a variable called rate and assign it the value 100?

80. How is a forEach statement different from a for statement?

81. Which operator returns true if the two compared values are not equal?

82. ________ is a standard for exchanging structured information over the web.

83. Web pages are seen within a window called the _____.

84. The _______ defines every object and element on a web page.

85. The cookie property is created with a required ____ attribute.

86. When javascript displays a numeric value, it stores that value to ____ digits of accuracy.

87. You can break up a long statement into multiple lines as long as you don't break up a ________.

88. The ____ method repeatedly executes the same code after being called only once.

89. The ____ metacharacter is used to allow a string to contain an alternate set of substrings.

90. A(n) ____ is an object that has been created from an existing class.

91. Value is a function of ___________ and ___________?

92. To manipulate arrays in your scripts, you use the methods and length property of the ____ class.

93. Many programming languages include a string operation called __________.

94. In the bubble sort algorithm, the two arguments sent into the swap module are ________.

95. A function includes its ____, which are values used by the function.

96. Less than (<), greater than (>), and not (not equal to) are examples of ____.

97. The ________ operator is a unary operator, as it works with only one operand.

98. If the expression is false, the ________ operator will return true.

99. Use the ________ method to write text to a web page.

100. To convert a javascript object to a json string, you use the ____ method.