OIC - NVL in javascript

NVL lets us to replace null (returned as blank) with a string in the results of a query. For example, 

NVL(value1, value2)

If value1 is null then it will be replaced with value2.

Javascript:

function nvl(value,nullValue){

var output = "";

if (value == null || value == "")

{

output = nullValue;

}else {

output = value;

}

return output;

}