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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 421 | * Filter a Customize setting value for use in JavaScript. |
| 422 | * |
| 423 | * The dynamic portion of the hook name, `$this->id`, refers to the setting ID. |
| 424 | * |
| 425 | * @since 3.4.0 |
| 426 | * |
| 427 | * @param mixed $value The setting value. |
| 428 | * @param WP_Customize_Setting $this {@see WP_Customize_Setting} instance. |
| 429 | */ |
| 430 | $value = apply_filters( "customize_sanitize_js_{$this->id}", $this->value(), $this ); |
| 431 | |
| 432 | if ( is_string( $value ) ) |
| 433 | return html_entity_decode( $value, ENT_QUOTES, 'UTF-8'); |
| 434 | |
| 435 | return $value; |
| 436 | } |
| 437 | |
| 438 | /** |
| 439 | * Validate user capabilities whether the theme supports the setting. |