How to access javascript variable value by creating another variable via concatenation?
Please have a look on the following code -
var abc_text = "Hello";
var def_text = "world";
function testMe(elem) {
var xyz = elem+"_text";
alert(xyz);
}
testMe("abc");
testMe("def");
I am trying to pass prefix to a function and the try to print some pre-defined values by concatenating. But the above example just prints "abc_text" and "def_text" .. instead of "Hello" and "world". How can I get it working?
Thank you.
EDIT
I am using Jquery.
Answers:
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"};
in this case use
var xyz = window[elem+"_text"];
var test={"abc":"Hello", "def":"World"};
function testMe(elem) {
var xyz = test[elem];
alert(xyz);
}
testMe("abc");
testMe("def");
?
There is a pretty good write-up on Dynamic Variables in JavaScript here:
http://www.hiteshagrawal.com/javascript/dynamic-variables-in-javascript