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When Should You Use jQuery's document.ready Function?
jQuery's document.ready function allows you to execute code when the HTML document has fully loaded and is ready to be manipulated. It serves a crucial role in JavaScript and jQuery development, ensuring that DOM manipulation occurs at the appropriate time.
When to Use document.ready
It's generally advisable to wrap your JavaScript/jQuery code within document.ready when:
Performance Impact
Placing code within document.ready does not significantly impact performance. jQuery optimizes its execution to avoid performance penalties.
Object Scope and AJAX
Bottom-of-Page JavaScript Placement and defer Attribute
Placing JavaScript at the bottom of your HTML page, along with using defer attributes for jQuery scripts on AJAX-loaded pages, are best practices. They ensure the necessary resources are available before executing code.
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