B2G/gecko/browser/devtools/styleinspector/CssLogic.jsm
/**
   * Retrieve the number of matched rules holding the this.property style
   * property. Only rules that come from allowed stylesheets are counted.
   *
   * @return {number} the number of matched rules.
   */
Retrieve the number of matched rules holding the this.property style
property. Only rules that come from allowed stylesheets are counted.

@return {number} the number of matched rules.
Retrieve the number of matched rules holding the this . property style property . Only rules that come from allowed stylesheets are counted . @return { number } the number of matched rules .
get matchedRuleCount()
  {
    if (!this._matchedSelectors) {
      this._findMatchedSelectors();
    } else if (this.needRefilter) {
      this._refilterSelectors();
    }
    return this._matchedRuleCount;
  }
get matchedRuleCount ( ) { if ( ! this . _matchedSelectors ) { this . _findMatchedSelectors ( ) ; } else if ( this . needRefilter ) { this . _refilterSelectors ( ) ; } return this . _matchedRuleCount ; }
Retrieve the number of matched rules holding the this.property style
 property.
Retrieve the number of matched rules holding the this . property style property .