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javascriptwith-statement

How to Replace with()

I've been reading up on with() and trying to figure out how to rewrite this piece of code.

    _$createRootItemAreas: function() {
        var areaSize = 50;
        var sides = { y2: 0, x2: 0, y1: 'y2', x1: 'x2' };
        for( side in sides ) {
            var area = this.root._$getArea();
            area.side = side;
            if( sides [ side ] )
                area[ side ] = area[ sides [ side ] ] - areaSize;
            else
                area[ side ] = areaSize;
            with( area )
                surface = ( x2 - x1 ) * ( y2 - y1 );
            this._itemAreas.push( area );
        }
    },

Should it be:

area.surface = ( x2 - x1 ) * ( y2 - y1 );

or

area.surface = ( area.x2 - area.x1 ) * ( area.y2 - area.y1 );
Solution 
  • area.surface = ( area.x2 - area.x1 ) * ( area.y2 - area.y1 );

    is the solution. I found another version of the same code where somebody had already fixed the issue and thus provided the solution.

    Thank you to @Bergi for the explaintion.