var xyz = "test";
var (xyz) = "abc";
alert (test);

var Container = {};
var xyz = "test";
Container[xyz] = "abc";
alert(Container['test']);

var xyz = "test";

//global

window[xyz] = "abc";

alert(test);    // "abc"

// object property

var myData = {};
myData[xyz] = "abc";

alert(myData.test);    // "abc"

xyz = "test";
eval(xyz+"=123");
alert(test); // gives 123

var xyz = "test";
window[xyz] = "abc";
alert (test);

var myObject = {};
var xyz = "test";
myObject [xyz] = "abc";
alert (myObject.test);

var xyz = "test";
eval ( xyz + "= 'abc';");
alert (test);

var key = 'somestring';
var obj = {};

obj[key] = 'another value';