Question 1

Which javascript methods can be used to serialize an object into a string and deserializea JSON string into an object, respectively?

Options :

A : JSON.stringify and JSON.parse

B : JSON.serialize and JSON.deserialize

C : JSON.encode and JSON.decode

D : JSON.parse and JSON.deserialize

Answer: A

Question 2

Refer to the code below:new Promise((resolve, reject) => {const fraction = Math.random();if( fraction >0.5) reject('fraction > 0.5, ' + fraction);resolve(fraction);}).then(() =>console.log('resolved')).catch((error) => console.error(error)).finally(() => console.log(' when am I called?')); Capture When does Promise.finally on line 08 get called?

Options :

A : When rejected

B : When resolved and settled

C : WHen resolved

D : When resolved or rejected

Answer: D

Question 3

Given two expressions var1 and var2. What are two valid ways to return the logical ANDof the two expressions and ensure it is data type Boolean ?Choose 2 answers:

Options :

A : Boolean(var1 && var2)

B : var1 && var2

C : var1.toBoolean() && var2toBoolean()

D : Boolean(var1) && Boolean(var2)

Answer: A,D

Question 4

A developer at Universal Containers creates a new landing page based on HTML, CSS, andJavaScript TO ensure that visitors have a good experience, a script named personaliseContextneeds to be executed when the webpage is fully loaded (HTML content and all related files ), inorder to do some custom initialization.Which statement should be used to call personalizeWebsiteContent based on the abovebusiness requirement?

Options :

A : document.addEventListener(''onDOMContextLoaded', personalizeWebsiteContext);

B : window.addEventListener('load',personalizeWebsiteContext);

C : window.addEventListener('onload', personalizeWebsiteContext);Document.addEventListener('''DOMContextLoaded' , personalizeWebsiteContext);

D : Document.addEventListener('''DOMContextLoaded' , personalizeWebsiteContext);

Answer: B

Question 5

Refer to the code below:Function changeValue(obj) {Obj.value = obj.value/2;}Const objA = (value: 10);Const objB = objA;changeValue(objB);Const result = objA.value;What is the value of result after the code executes?

Options :

A : 10

B : Nan

C : 5

D : Undefined

Answer: C