Answer
Use ID selectors where possible.
Cache selectors instead of repeating them.
Avoid overly complex selectors.
Cache selectors instead of repeating them.
Avoid overly complex selectors.
Quick Answer
Selector performance: always prefer ID selectors (#id - fastest, uses getElementById internally), then class + tag ("div.myClass"), then pure class (".myClass"), then attribute selectors (slowest). Scope selectors to a parent: $parent.find(".child") is faster than $(".parent .child"). Avoid :visible, :animated, :has() - these require DOM inspection for every element.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ