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   1  /**
   2   * @output wp-includes/js/wp-sanitize.js
   3   */
   4  
   5  /* eslint-env es6 */
   6  
   7  ( function () {
   8  
   9      window.wp = window.wp || {};
  10  
  11      /**
  12       * wp.sanitize
  13       *
  14       * Helper functions to sanitize strings.
  15       */
  16      wp.sanitize = {
  17  
  18          /**
  19           * Strip HTML tags.
  20           *
  21           * @param {string} text - Text to strip the HTML tags from.
  22           *
  23           * @return {string} Stripped text.
  24           */
  25          stripTags: function( text ) {
  26              let _text = text || '';
  27  
  28              // Do the search-replace until there is nothing to be replaced.
  29              do {
  30                  // Keep pre-replace text for comparison.
  31                  text = _text;
  32  
  33                  // Do the replacement.
  34                  _text = text
  35                      .replace( /<!--[\s\S]*?(-->|$)/g, '' )
  36                      .replace( /<(script|style)[^>]*>[\s\S]*?(<\/\1>|$)/ig, '' )
  37                      .replace( /<\/?[a-z][\s\S]*?(>|$)/ig, '' );
  38              } while ( _text !== text );
  39  
  40              // Return the text with stripped tags.
  41              return _text;
  42          },
  43  
  44          /**
  45           * Strip HTML tags and convert HTML entities.
  46           *
  47           * @param {string} text - Text to strip tags and convert HTML entities.
  48           *
  49           * @return {string} Sanitized text.
  50           */
  51          stripTagsAndEncodeText: function( text ) {
  52              let _text = wp.sanitize.stripTags( text ),
  53                  textarea = document.createElement( 'textarea' );
  54  
  55              try {
  56                  textarea.textContent = _text;
  57                  _text = wp.sanitize.stripTags( textarea.value );
  58              } catch ( er ) {}
  59  
  60              return _text;
  61          }
  62      };
  63  }() );