How to access javascript variable value by creating another variable via concatenation?

Question

Please have a look on the following code -

var abc_text = \"Hello\";
var def_text = \"world\";

function testMe(elem) {
    var xyz = elem+\"_text\";
    alert(x         


        

Answer 1

var test={"abc":"Hello", "def":"World"};

function testMe(elem) { 
    var xyz = test[elem];
    alert(xyz); 
} 

testMe("abc"); 
testMe("def");

​

Answer 2

You can eval xyz, but it's better to store abc_text and def_text in associative array or in object;

var text = {"abc" : "Hello", "def" : "Word"};

Answer 3

in this case use

var xyz = window[elem+"_text"];

Answer 4

There is a pretty good write-up on Dynamic Variables in JavaScript here:

http://www.hiteshagrawal.com/javascript/dynamic-variables-in-javascript