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.