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Questions and Answers
What should be used as a prefix when selecting ids?
What should be used as a prefix when selecting ids?
- # (correct)
- @
- &
- .
What is the purpose of jQuery?
What is the purpose of jQuery?
- To provide sophisticated methods for element selection
- To determine which style declaration is applied to an element
- To help with web development (correct)
- To compress files
What is one advantage of using jQuery?
What is one advantage of using jQuery?
- It is easy to interpret
- It is independent of other libraries
- It is highly extensible (correct)
- It is not compressible
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Study Notes
- jQuery is a popular library used by many websites
- Using jQuery without optimization can slow down the DOM
- Sizzle is a popular jQuery selector library that provides more sophisticated methods for element selection
- When selecting ids, use # as the prefix to the id name, and when selecting classes, use . as the prefix
- The hierarchy of specificity determines which style declaration is applied to an element
- When using Sizzle, go more specific on the rightmost side and less specific on the left to optimize performance
- jQuery is a library that helps with web development.
- jQuery is highly extensible and has a simple API.
- jQuery is designed for maximum efficiency and is easy to interpret.
- jQuery is independent of other libraries, and most of its selectors perform competitively.
- jQuery is highly compressible, and it is easy to add new selectors.
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