So I have a property I want to make alias's for.
var default_commands = {} default_commands['foo'] = "bar"; Then I want a bunch of items to alias to "foo"
So if I wanted
default_commands['fu'] = default_commands['foo']; default_commands['fuu'] = default_commands['foo']; How could I do that so I don't have to write that all out
I tried:
default_commands['fu','fuu'] = default_commands['foo']; But that didn't seem to work.
["fu", "fuu"].forEach(function (alias) { default_commands[alias] = default_commands.foo; }); This won't be an "alias" in the sense that word usually invokes:
default_commands.fu = 5; console.log(default_commands.foo); // still "bar", not 5. But it wasn't clear what you meant in your question.
Solution that is probably the most flexible:
function unalias (str) { // Use whatever logic you want to unalias the string. // One possible solution: var aliases = { "fu": "foo", "fuu": "foo" }; return aliases[str] !== undefined ? aliases[str] : str; } default_commands[unalias("fu")] = 7; default_commands[unalias("fuu")] = default_commands[unalias("foo")] + 3; alert(default_commands.foo); Why is this more flexible? Read and writes will "propagate" properly.
The only way you can really use aliases in javascript is to use objects.
Objects are accesed in js like pointers:
Example:
var myobj = {hello: "world"}; var myalias = myobj; myobj.hello = "goodbye"; console.log(myobj.hello); => // "goodbye" console.log(myalias.hello); => // "goodbye" You cant make an alias for a string, number, boolean, etc..
Example:
var myint = 1; var myalias = myint; myint = 2; console.log(myint); => // 2 console.log(myalias); => // 1 PD: All types (like Array or RegExp) except Int, String, Boolean, null and undefined are treated like Objects.
You're over thinking it.
var foo="foo",fu=foo,fuu=foo,default_commands = {}; default_commands[foo] = "bar"; console.log(default_commands[foo]); default_commands[fu] = "baz"; console.log(default_commands[foo]); default_commands[fuu] = "bing"; console.log(default_commands[foo]); 