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   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  }() );