JavaScript - Interview Questions and Answers for 'JavaScript' | Search Interview Question

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Q31. What is event handling ? What is event propagation ?

JavaScript

Ans. LinkedIn

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Q32. What is event bubbling ?

JavaScript

Ans. LinkedIn

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Q33. What is a cookie ?

Java EE

Ans. A cookie is a small piece of text stored on a user's computer by the browser for a specific domain. Commonly used for authentication, storing site preferences, and server session identification.

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Q34. Which of the following is fastest to locate the DOM element ?

a. document.getElementById
b. document.getElementByName
c. document.ElementName.SubElementName
d. They all result in similar performance in retrieving the DOM element.

Ans. document.ElementName.SubElementName

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Q35. Why should we have Javascript method definitions within HTML Head section ?

a. Its safe to have javascript code within head section
b. Head section gets loaded even if there is any error in loading HTML page
c. Head section gets executed first and hence assure that js method definition will be loaded before they are called
d. So that we can have method definition and method call at the same place

Ans. Head section gets executed first and hence assure that js method definition will be loaded before they are called

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