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wp-includes/js/wp-sanitize.js

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+/**
+ * @output wp-includes/js/wp-sanitize.js
+ */
+
+/* eslint-env es6 */
+
+( function () {
+
+	window.wp = window.wp || {};
+
+	/**
+	 * wp.sanitize
+	 *
+	 * Helper functions to sanitize strings.
+	 */
+	wp.sanitize = {
+
+		/**
+		 * Strip HTML tags.
+		 *
+		 * @param {string} text - Text to strip the HTML tags from.
+		 *
+		 * @return {string} Stripped text.
+		 */
+		stripTags: function( text ) {
+			let _text = text || '';
+
+			// Do the search-replace until there is nothing to be replaced.
+			do {
+				// Keep pre-replace text for comparison.
+				text = _text;
+
+				// Do the replacement.
+				_text = text
+					.replace( /<!--[\s\S]*?(-->|$)/g, '' )
+					.replace( /<(script|style)[^>]*>[\s\S]*?(<\/\1>|$)/ig, '' )
+					.replace( /<\/?[a-z][\s\S]*?(>|$)/ig, '' );
+			} while ( _text !== text );
+
+			// Return the text with stripped tags.
+			return _text;
+		},
+
+		/**
+		 * Strip HTML tags and convert HTML entities.
+		 *
+		 * @param {string} text - Text to strip tags and convert HTML entities.
+		 *
+		 * @return {string} Sanitized text.
+		 */
+		stripTagsAndEncodeText: function( text ) {
+			let _text = wp.sanitize.stripTags( text ),
+				textarea = document.createElement( 'textarea' );
+
+			try {
+				textarea.textContent = _text;
+				_text = wp.sanitize.stripTags( textarea.value );
+			} catch ( er ) {}
+
+			return _text;
+		}
+	};
+}() );