JavaScript Question Answers - 81-100

81. Which method displays a dialog box with a message and an OK and a Cancel button

confirm("message")

82. Which property returns the function that created JavaScript's Number prototype

Number.prototype.constructor

83. Which statement breaks one iteration (in the loop) if a specified condition occurs, and continues with the next iteration in the loop

continue;

84. Which method returns the cosine of x (x is in radians)

Math.cos(x)

85. Which method Creates a pop-up window

window.open("url","name","features")

86. Which statement Stops the execution of JavaScript, and calls (if available) the debugging function

debugger;

87. Which method sets or returns the default text in the statusbar of a window

window.status

88. Which statement Executes a block of statements and repeats the block while a condition is true

while (condition) { ... }

89. Which method returns the Document object for the window

window.document

90. Which property returns Euler's number (approx. 2.718)

Math.E

91. What are the decodeURI() and encodeURI()

- encodeURI(): Encodes a URI by escaping special characters.
- decodeURI(): Decodes an encoded URI back to normal form.

92. What are escape characters

Escape characters represent special characters in strings, e.g., \\n (newline), \\t (tab), \\\" (quote).

93. What is event bubbling?

Event bubbling is the process where an event triggered on a child element propagates up to its parent elements in the DOM hierarchy.

94. Which method returns the value of Ex

Math.exp(x)

95. In JavaScript how to display a string using a fixed-pitch font

document.write("Hello".fixed());

96. Which method returns x, rounded downwards to the nearest integer

Math.floor(x)

97. Which method Sets focus to the current window

window.focus()

98. What are all the looping structures in JavaScript

- for
- while
- do...while
- for...in
- for...of

99. What are JavaScript types

- Primitive: Number, String, Boolean, Undefined, Null, Symbol, BigInt
- Non-primitive: Object

100. In JavaScript how to display a string using a specified color

document.write("Hello".fontcolor("red"));