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wp-sanitize.js (1350B)

      1 /**
      2  * @output wp-includes/js/wp-sanitize.js
      3  */
      4 
      5 ( function () {
      6 
      7 	window.wp = window.wp || {};
      8 
      9 	/**
     10 	 * wp.sanitize
     11 	 *
     12 	 * Helper functions to sanitize strings.
     13 	 */
     14 	wp.sanitize = {
     15 
     16 		/**
     17 		 * Strip HTML tags.
     18 		 *
     19 		 * @param {string} text Text to have the HTML tags striped out of.
     20 		 *
     21 		 * @return  Stripped text.
     22 		 */
     23 		stripTags: function( text ) {
     24 			text = text || '';
     25 
     26 			// Do the replacement.
     27 			var _text = text
     28 					.replace( /<!--[\s\S]*?(-->|$)/g, '' )
     29 					.replace( /<(script|style)[^>]*>[\s\S]*?(<\/\1>|$)/ig, '' )
     30 					.replace( /<\/?[a-z][\s\S]*?(>|$)/ig, '' );
     31 
     32 			// If the initial text is not equal to the modified text,
     33 			// do the search-replace again, until there is nothing to be replaced.
     34 			if ( _text !== text ) {
     35 				return wp.sanitize.stripTags( _text );
     36 			}
     37 
     38 			// Return the text with stripped tags.
     39 			return _text;
     40 		},
     41 
     42 		/**
     43 		 * Strip HTML tags and convert HTML entities.
     44 		 *
     45 		 * @param {string} text Text to strip tags and convert HTML entities.
     46 		 *
     47 		 * @return Sanitized text. False on failure.
     48 		 */
     49 		stripTagsAndEncodeText: function( text ) {
     50 			var _text = wp.sanitize.stripTags( text ),
     51 				textarea = document.createElement( 'textarea' );
     52 
     53 			try {
     54 				textarea.textContent = _text;
     55 				_text = wp.sanitize.stripTags( textarea.value );
     56 			} catch ( er ) {}
     57 
     58 			return _text;
     59 		}
     60 	};
     61 }() );