JavaScript Variableninhalt als Variable behandeln

var activecell = function(){
	for(var i=1;i<=3;i++){
	for(var h=1;h<=4;h++){
		var xwert = i.toString();
		var ywert = h.toString();
		var querycell = "bg" + xwert + "_" + ywert;
		if(hero.x + 640 >= querycell.x && hero.x -1280 <= querycell.x && hero.y + 640 >= querycell.y && hero.y -1280 <= querycell.y){
			querycell.actv = true;
		}
		else{
			querycell.actv = false;
		}
	}
	}
};

eval(querycell + ".actv = true;");

eval("if(hero.x + 640 >= "+querycell+".x && hero.x -1280 <= "+querycell+".x && hero.y + 640 >= "+querycell+".y && hero.y -1280 <= "+querycell+".y){\n" + 
	querycell + ".actv = true;\n" + 
	"}\n" + 
	"else{\n" + 
	querycell + ".actv = false;\n" + 
	}\n");

var abcdef = 'variable abcdef';
var esd = 'abcdef';
console.debug( esd );
console.debug( eval( 'console.debug( ' + esd + ' )' ) );

abcdef
variable abcdef

var abc = {}; // alternativ: = new Object();
abc.def = 'def';
abc['abc'] = 'abc';
console.debug( abc.abc ); // ergibt abc
console.debug( abc['def'] ); // ergibt def

var bg1_1 = {
	x: -960,
	y: -960,
	actv: false,
	bild: bgImg};

var obj = new Object;
obj.x = 1;
obj.y = 2;

var obj = {};
obj.x = 1;
obj.y = 2;

// oder direkt:

var obj = {x: 1, y: 2};

var bgs=[[bg1_1,bg1_2,bg1_3],[bg2_1,bg2_2,bg2_3],......];
for(var i=0;i<bgs.length;i++){
     for(var y=0;y<bgs[i].length;y++){
          var curBg=bgs[i][y];
          var x=curBg["x"];
          var y=curBg["y"];
          var actv=curBg["actv"];
          var bild=curBg["bild"];
          //und halt was du damit machen willst
     }
}