CODEWITHSUNDEEP
jquery
tallpaul
tallpaul

Reputation: 1513

When writing jQuery, what leads to better performance?

When writing jQuery, what leads to better performance?

Upvotes: 0

Views: 31

Answers (2)

Fizk
Fizk

Reputation: 1114

It really depends on the situation, but as you state, it is (usually) a good idea to 'cache' your selectors. There's also a lot of behind-the-scenes mechanics, that could help you out - Such as using $("#id").find(".subchild") instead of $("#id .subchild"), since using only a id selector, uses the browsers internal 'find-element-with-this-id' engine.

Have a look at https://learn.jquery.com/performance/optimize-selectors/ - It really explains a lot on how to speed up some things :)

Upvotes: 1

Miguel
Miguel

Reputation: 20633

If you plan on reusing a selector multiple times then it's a good idea to cache them in a variable to avoid expensive DOM lookup each time.

Upvotes: 0

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