wp_customize_support_script()
Function: Prints a script to check whether or not the Customizer is supported, and apply either the no-customize-support or customize-support class to the body.
Source: wp-includes/theme.php:3677
Function: Prints a script to check whether or not the Customizer is supported, and apply either the no-customize-support or customize-support class to the body.
Source: wp-includes/theme.php:3677