wp_omit_loading_attr_threshold

函式
wp_omit_loading_attr_threshold ( $force = false )
引數
  • (bool) $force Optional. If set to true, the filter will be (re-)applied even if it already has been before. Default false.
    Required:
    Default: false
返回值
  • (int) The number of content media elements to not lazy-load.
定義位置
相關方法
wp_get_loading_attr_defaultwp_img_tag_add_loading_attrwp_iframe_tag_add_loading_attrwp_lazy_loading_enabledwp_admin_bar_header
引入
5.9.0
棄用
-

wp_omit_loading_attr_threshold。這個過濾器用於設定省略img標籤中載入屬性的閾值。它用於通過減少需要載入的資料量來提高頁面的效能。

獲取不懶惰載入的第一個內容媒體元素的閾值。

這個函式執行{@see ‘wp_omit_loading_attr_threshold’}過濾器,它使用一個預設的閾值1。除非使用`$force`引數,否則每個頁面載入時只執行一次過濾器。

function wp_omit_loading_attr_threshold( $force = false ) {
	static $omit_threshold;

	// This function may be called multiple times. Run the filter only once per page load.
	if ( ! isset( $omit_threshold ) || $force ) {
		/**
		 * Filters the threshold for how many of the first content media elements to not lazy-load.
		 *
		 * For these first content media elements, the `loading` attribute will be omitted. By default, this is the case
		 * for only the very first content media element.
		 *
		 * @since 5.9.0
		 *
		 * @param int $omit_threshold The number of media elements where the `loading` attribute will not be added. Default 1.
		 */
		$omit_threshold = apply_filters( 'wp_omit_loading_attr_threshold', 1 );
	}

	return $omit_threshold;
}

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