Javascript’s variables grouping with object acting like namespace

In Javascript, if you need to have multiple global variable in a script you could finish with something like a chunk of `var`.

var v1;
var v2;
var v3;
var v4;
var v5;

This can cause problem because, maybe someone will need to define a variable with the same name (locally or globally). To reduce this problematic, you can use Javascript object notation (JSON). By using JSON syntax you can create a “virtual” namespace with an object. I say “virtual namespace” because it’s not a namespace. In fact, it’s an object… but it’s created just to group variable instead if letting them wild at the top of a Javascript file. This is pretty important because if a web page include many Javascript file this could end having 2 files using the same variable name which would override the value of the other.

var mynamespace = 
{
   "v1":"value1"
  ,"v2":"value2"
  ,"v3":"value3"
  ,"v4":"value4"
  ,"v5":"value5"
  ,"v6":"value6"
};

This way, instead of using in your code v1 directly you use the object v1.

  mynamespace.v1 = "Patrick";

  //...

  if(mynamespace.v1 == "Unknown")
  {
  //...
  }

This post cover only the basic. You can have multiple level of deepest as JSON let you have inner array or “object”. I’ll cover this later.