Question 6

Which code statement correctly retrieves and return an object from localStorage?
A)

B)

C)

D)
  • Question 7

    A developer is setting up a new Node.js server with a client library that is built using events and callbacks.
    The library:
    * Will establish a web socket connection and handle receipt of messages to the server
    * Will be imported with require, and made available with a variable called we.
    The developer also wants to add error logging if a connection fails.
    Given this info, which code segment shows the correct way to set up a client with two events that listen at execution time?
  • Question 8

    Refer to the following array:
    Let arr1 = [ 1, 2, 3, 4, 5 ];

    Which two lines of code result in a second array, arr2 being created such that arr2 is not a reference to arr1?
  • Question 9

    A developer wants to literate through an array of objects and count the objects whose property value, name, start with the letter N. const arrobj - [{''name ''t ''Zach''}, { ''name t Kate'') , ( ''name Alice'') < ( ''name'' t ''Bob'') , (''name'' t ''Nathan) , (''name'' t ''Nathandle1'')] Refer to the code snippet below:

    Which missing lines 02 and 03 return the correct count?
  • Question 10

    GIven a value, which three options can a developer use to detect if the value is NaN?
    Choose 3 answers !