Question

I can’t return multiple values in javascript return statement. Would it be useful to wrap these values in a js object? or other solution?

function buildSomething()


    var t = [];
    var x = [];
    var y = [];
    var h = [];

    var myValues = fnGetData(t,y,x,h);



function fnGetData(t,y,x,h) 
{

 //  do something 
 // return t,y,x,h

}   

Answer 1

Looking closely at your code, it looks like you’re trying to pass multiple values into a function. Using an object for this is a common idiom in JavaScript.

var values = {
    t: t,
    x: x,
    y: y,
    h: h
};

It also makes it easy to handle default data

function fnGetData(data)  {
   data.t = data.t || [];
   data.x = data.x || ["default", "values"];
}

I’m not sure if you’re using jQuery or not, but there’s a common jQuery idiom for this as well:

function fnGetData(data)  {
   $.extend(data, {
      t: [],
      x: ["intial", "values"]
   });
}