Should I use a global variable and if not, what instead? (Javascript)

Question

I\'m working with several functions which need to pass a variable back and forth. Should I use a global variable or another method instead? I would also appreciate an exampl

Answer 1

Global variables should be avoided in reusable scripts.

If you're writing simple functions that will only be used in one page, there's nothing wrong with using globals.

If you're writing a reusable component or a complex web page, you should use closures or namespaces instead.

For more specific advice, please provide more detail.

EDIT: You should create an XmlData class.

For example:

function XmlData(...) { 
    this.data = ...;
}
XmlData.prototype.doSomething = function(...) { 
    //Use this.data
}

Depending on how what your data comes from, you may want to make a separate function to retrieve the data.

Here is a good explanation.