Question

For example

var contents = 'some text';

function fileSave(path){
// I'll handle saving the file, but I need the file contents
}

contents.fileSave('index.html');

So when the function is fun on the contents variable, the function has access to the variable. Like how replace() works in JavaScript.

EX.

str.replace();

but in this case

contents.fileSave();

the variable is interchangeable, the function applies to any variable is attached too.

Sorry, newbie..

Answer 1

If you want to add methods to all strings, you add it to String.prototype.

String.prototype.fileSave = function(path) {
    var str = this + "";
    // work with the string
    console.log(str, path);
};

Just be aware of your environment. Extending the native prototypes could conflict with other code. You’ll need to decide for yourself if it’ll be an issue or not.

var contents = 'some text';

contents.fileSave('index.html'); // some text index.html