Zell Liew • 6/9/2021

How and when to use Async and Defer attributes

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This article provides a detailed comparison of the async and defer attributes for HTML script tags. It explains how both prevent render-blocking, but differ in execution timing and order. It covers when to use each attribute based on DOM dependency and script sequence, offering practical examples and clarifying that traditional script placement remains valid.

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#JavaScript #Frontend #performance
How and when to use Async and Defer attributes

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