WordPress函数：wp_required_field_indicator

一、函数简介

为必填表单字段分配视觉指示器。（Assigns a visual indicator for required form fields.）  

二、函数参数

* @return string Indicator glyph wrapped in a `span` tag.  

三、函数案例

<?php wp_required_field_indicator() ?>

   

四、源代码

/**
 * Assigns a visual indicator for required form fields.
 *
 * @since 6.1.0
 *
 * @return string Indicator glyph wrapped in a `span` tag.
 */
function wp_required_field_indicator() {
	/* translators: Character to identify required form fields. */
	$glyph     = __( '*' );
	$indicator = '<span class="required">' . esc_html( $glyph ) . '</span>';

	/**
	 * Filters the markup for a visual indicator of required form fields.
	 *
	 * @since 6.1.0
	 *
	 * @param string $indicator Markup for the indicator element.
	 */
	return apply_filters( 'wp_required_field_indicator', $indicator );
}