Variable Name Made Of A Variable Value

How can i use a variable value to name a variable? var xyz = 'test'; var (xyz) = 'abc'; alert (test);

Solution 1:

If you put them in an object, you could do this instead:

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

Solution 2:

A variable name can not be the result of an expression unless you use eval, which you don't want to do, or unless it's a global variable.

If you need dynamic naming, you should use an object, and name its properties dynamically. This is also how globals can be dynamically created.

var xyz = "test";

//globalwindow[xyz] = "abc";

alert(test);    // "abc"// object propertyvar myData = {};
myData[xyz] = "abc";

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

Solution 3:

eval does this:

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

I am sure many say NO to eval. But, this does it.

Solution 4:

If it is global scope

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

Better to use an object

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

JSFiddle example

Solution 5:

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