JS Object Recap
Quiz
•
Computers
•
11th Grade
•
Practice Problem
•
Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a JavaScript Object?
a collection of key-value pairs
a collection of arrays
a collection of functions
a collection of strings
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you create an object using literal notation?
let obj = [key: value];
let obj = {key: value};
let obj = (key: value);
let obj = <key: value>;
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the correct syntax for accessing the property of an object?
objectName.objectPropery( );
objectName.objectProperty[ ];
objectName.objectProperty;
objectName.objectProperty{ };
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What will be the output of the following code: alert(person.firstname); when person is {firstName: 'John',lastName:'Doe'}?
John
Doe
undefined
null
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What will be the output of the following code: alert(address.district); when address is {buildingNo: '3960' , street: 'North 1st Street', country: 'USA'};?
3960
North 1st Street
USA
undefined
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