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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
1748 | * Filters whether to add the `loading` attribute to the specified tag in the specified context. |
1749 | * |
1750 | * @since 5.5.0 |
1751 | * |
1752 | * @param bool $default Default value. |
1753 | * @param string $tag_name The tag name. |
1754 | * @param string $context Additional context, like the current filter name |
1755 | * or the function name from where this was called. |
1756 | */ |
1757 | return (bool) apply_filters( 'wp_lazy_loading_enabled', $default, $tag_name, $context ); |
1758 | } |
1759 |
|
1760 | /** |
1761 | * Filters specific tags in post content and modifies their markup. |
1762 | * |
1763 | * Modifies HTML tags in post content to include new browser and HTML technologies |
1764 | * that may not have existed at the time of post creation. These modifications currently |
1765 | * include adding `srcset`, `sizes`, and `loading` attributes to `img` HTML tags, as well |
1766 | * as adding `loading` attributes to `iframe` HTML tags. |