WordPress at a glance
function is not described

WP_Customize_Manager::customize_preview_html5() public WP 3.4.0

Deprecated from version 4.7.0 Customizer no longer supports IE8, so all supported browsers recognize HTML5.. It is no longer supported and can be removed in future releases. It is recommended to replace this function with the same one.

Print a workaround to handle HTML5 tags in IE < 9.

{} It's a method of the class: WP_Customize_Manager{}

No Hooks.

Return

null. Nothing.

Usage

$WP_Customize_Manager = new WP_Customize_Manager();
$WP_Customize_Manager->customize_preview_html5();

Changelog

Since 3.4.0 Introduced.
Deprecated Since 4.7.0 Customizer no longer supports IE8, so all supported browsers recognize HTML5.

Code of WP_Customize_Manager::customize_preview_html5() WP 5.7.2

<?php
public function customize_preview_html5() {
	_deprecated_function( __FUNCTION__, '4.7.0' );
}