Move sanitizeText and stripTags from press this to wp.sanitize.

Introduce the `wp.sanitize` namespace and add two helpers for text sanitization. `stripTags` strips HTML tags from a string using regex.

Fixes #40635.


git-svn-id: https://develop.svn.wordpress.org/trunk@41061 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/js/press-this.js

@@ -8,7 +8,6 @@
 			$window               = $( window ),
 			$document             = $( document ),
 			saveAlert             = false,
-			textarea              = document.createElement( 'textarea' ),
 			sidebarIsOpen         = false,
 			settings              = window.wpPressThisConfig || {},
 			data                  = window.wpPressThisData || {},
@@ -55,38 +54,6 @@
 			return key || '';
 		}
 
-		/**
-		 * Strips HTML tags
-		 *
-		 * @param string string Text to have the HTML tags striped out of.
-		 * @returns string Stripped text.
-		 */
-		function stripTags( string ) {
-			string = string || '';
-
-			return string
-				.replace( /<!--[\s\S]*?(-->|$)/g, '' )
-				.replace( /<(script|style)[^>]*>[\s\S]*?(<\/\1>|$)/ig, '' )
-				.replace( /<\/?[a-z][\s\S]*?(>|$)/ig, '' );
-		}
-
-		/**
-		 * Strip HTML tags and convert HTML entities.
-		 *
-		 * @param text string Text.
-		 * @returns string Sanitized text.
-		 */
-		function sanitizeText( text ) {
-			var _text = stripTags( text );
-
-			try {
-				textarea.innerHTML = _text;
-				_text = stripTags( textarea.value );
-			} catch ( er ) {}
-
-			return _text;
-		}
-
 		/**
 		 * Allow only HTTP or protocol relative URLs.
 		 *
@@ -97,7 +64,7 @@
 			url = $.trim( url || '' );
 
 			if ( /^(?:https?:)?\/\//.test( url ) ) {
-				url = stripTags( url );
+				url = wp.sanitize.stripTags( url );
 				return url.replace( /["\\]+/g, '' );
 			}
 
@@ -224,7 +191,7 @@
 				$image.replaceWith( $( '<span>' ).text( $image.attr( 'alt' ) ) );
 			});
 
-			return sanitizeText( $element.text() );
+			return wp.sanitize.sanitizeText( $element.text() );
 		}
 
 		/**