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filter is not described

customize_sanitize_js_(id) filter-hook . WP 3.4.0

Filters a Customize setting value for use in JavaScript.

The dynamic portion of the hook name, $this->id, refers to the setting ID.

Usage

add_filter( 'customize_sanitize_js_(id)', 'filter_function_name_8463', 10, 2 );
function filter_function_name_8463( $value, $this ){
	// filter...

	return $value;
}
$value(mixed)
The setting value.
$this(WP_Customize_Setting)
WP_Customize_Setting instance.

Where the hook is called

WP_Customize_Setting::js_value()
wp-includes/class-wp-customize-setting.php 787
$value = apply_filters( "customize_sanitize_js_{$this->id}", $this->value(), $this );

Where the hook is used (in WP core)

wp-includes/class-wp-customize-setting.php 191
add_filter( "customize_sanitize_js_{$this->id}", $this->sanitize_js_callback, 10, 2 );