Question

So I’m trying to do the following;

var myVar;  

function testFunction(args){  
args.cacheVar = new Date();  
}  

testFunction({cacheVar:myVar});

but instead of changing the value of myVar, its changing the value of args.cacheVar.
What I would like to happen is for myVar = new Date(). not args.cacheVar.

How can I accomplish this with my current setup? (using arguments)

Answer 1

You are not passing myVar to your function. You are passing an object. That object may get updated, but since you do not have a reference to it anywhere, nothing happens.

You need to save your object as a variable before passing it.

var myVar = {cacheVar:null}; 

function testFunction(args){  
    args.cacheVar = new Date();  
}  

testFunction(myVar);