lib/CSSStyleDeclaration.js
function(value) {
      var i;
      for (i = value; i < this._length; i++) {
        delete this[i];
      }
      this._length = value;
    }
function(value) {
      var i;
      for (i = value; i < this._length; i++) {
        delete this[i];
      }
      this._length = value;
    }
function ( value ) { var i ; for ( i = value ; i < this . _length ; i ++ ) { delete this [ i ] ; } this . _length = value ; }
This deletes indices if the new length is less then the current
length. If the new length is more, it does nothing, the new indices
will be undefined until set.
This deletes indices if the new length is less then the current length . If the new length is more it does nothing the new indices will be undefined until set .