Polymer JS MCQ Questions
11. Polymer is an open-source?
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
View Answer
Ans : A
Explanation: Polymer is an open-source JavaScript library developed by Google developers.
12. It provide __________ data binding?
A. one-way
B. two-way
C. Both A and B
D. None of the above
View Answer
Ans : C
Explanation: It provides both one-way and two-way data binding.
13. Polymer elements are a set of ?
A. visual
B. non-visual
C. designed
D. Both A and B
View Answer
Ans : D
Explanation: Polymer elements are a set of visual and non-visual elements designed to work with the layout, user interaction, selection, and scaffolding applications.
14. What is true about platinum elements?
A. The platinum elements animated transitions for Polymer elements using web animations.
B. The platinum elements provide features to turn your web page into a true webapp.
C. The platinum elements used to connect a group of plugins to the Polymer application.
D. Both B and C
View Answer
Ans : B
Explanation: The platinum elements provide features to turn your web page into a true webapp.
15. Custom element name should start with a ?
A. Lower case
B. Upper case
C. colon
D. hash
View Answer
Ans : A
Explanation: Custom element name should start with a lower case letter and contain a dash between the names.
16. Shadow DOM allows locating the children in a scoped subtree, which is known as?
A. shadow root
B. shadow host
C. shadowRoot
D. shadow tree
View Answer
Ans : D
Explanation: Shadow DOM allows locating the children in a scoped subtree, which is known as shadow tree.
17. Path is a string in the data system
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
View Answer
Ans : A
Explanation: True, Path is a string in the data system
18. The text in binding annotation are enclosed by ().
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
View Answer
Ans : B
Explanation: The text in binding annotation are enclosed by double curly bracket ({{ }}) or double square bracket ([[ ]]) delimiters and the compound binding includes one or more string literal binding annotations.
19. Event type "up" is used for?
A. It specifies that the finger/button has moved down
B. It specifies the occurrence of up and down actions.
C. It specifies that the finger/button has moved up.
D. It specifies the occurrence of up and down actions.
View Answer
Ans : C
Explanation: up : It specifies that the finger/button has moved up.
20. sourceEvent : It specifies the down action caused by DOM event.
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
View Answer
Ans : A
Explanation: sourceEvent : It specifies the down action caused by DOM event.
Discussion