help me solve this simple problem

i have around 6 var "256-512-1M.. and so on" which store in my database as value like "1-2-3 .. and so on"
i want the code

if the value "1" turn or appear 256

if value "2" // // // 512

if value "3" // // // 1M

i try to solve more time but i failed

plz help me
Thx in advence

 

If I understand correctly, you need something like this:

var new_value = value*256;

if(new_value >= 1024)
   new_value = new_value/1024+'M';

Code (markup):

 

var obj = {1: "256K", 2: "512K", 3: "1M"};

new_value = obj[value];

 

i think this what i want

var data = 2;
var speed = ["256", "512", "1024", "2048", "4096"];
var arrayi = data - 1;
document.write(speed[arrayi]);

Code (markup):