Question

I have a function with X arguments. I was curious if functions will accept an object which contains the args and still function correctly.

Example:

  var x = 0;
  var y = 0;
  var z = "test";
  someFunction(x,y,z);

vs

  var obj = new Object();
  obj.x = 0;
  obj.y = 0;
  obj.Z = "test";
  somefunction(obj);

vs.

  var obj = new Array();
  obj.push(0);
  obj.push(0);
  obj.push("test");
  somefunction(obj);

I know you could program it to handle it, but i was curious if functions would be able to accept args in different formats as long as they were all there.

Edit:

I seem to get a syntax error of sorts when collecting objects together. What do i mean? I mean i have somefunction which accepts some args, including callbacks….. so when trying to write it up, and put all the args/callbackks in an Array to do somefunction.apply(objArray), it errors on adding the items into the set. The way i did it was:

 x = new Array();
 x = [url, 
function(){
    displayFile(url, 'image', null, ft_id, null, null, null, null, !MA.isiOS());
}, 
function(e){
    if(DEBUG) console.log('Error creating gallery thumbnail');
    alert('There was a problem creating a thumbnail');
    MA.hideMessage();
}
  ];
  newArray.push(x);

it seems to mess up on the x definition set up. Does this approach not like setting up callbacks like this?

Answer 1

It will if obj is the Array version, and you call it using Function.prototype.apply.

somefunction.apply(window, obj);

The arguments will be passed as individuals