Automatically create object if undefined

Question

Is there an easy way to automatically add properties to objects if they don\'t allready exist?

Consider the following example:

var test = {}
test.hel         


        

Answer 1

I've come up with something, really custom as well, but it works as far as I have tested.

function dotted_put_var(str,val) {
    var oper=str.split('.');
    var p=window;
    for (var i=0;i

Then, a complex variable can be set like this, ensuring that every links will be created if not already:

dotter_put_var('test.hello.world', 'testvalue'); // test.hello.world="testvalue";

See this working FIDDLE.