I am trying to use method chain with sub-methods.
IE: foo("bar").do.stuff()
The catch is stuff() needs to have a reference to the value of bar("bar")
Is there any this.callee or other such reference to achieve this?
2 Answers
Is there any this.callee or other such reference to achieve this?
No, you'd have to have foo return an object with a do property on it, which either:
Make
stuffa closure over the call tofooHave information you want from
foo("bar")as a property ofdo, and then reference that information instufffrom thedoobject viathis, or
// Closure example:
function foo1(arg) {
return {
do: {
stuff: function() {
snippet.log("The argument to foo1 was: " + arg);
}
}
};
}
foo1("bar").do.stuff();
// Using the `do` object example (the `Do` constructor and prototype are just
// to highlight that `stuff` need not be a closure):
function Do(arg) {
this.arg = arg;
}
Do.prototype.stuff = function() {
snippet.log("The argument to foo2 was: " + this.arg);
};
function foo2(arg) {
return {
do: new Do(arg)
};
}
foo2("bar").do.stuff();<!-- Script provides the `snippet` object, see http://meta.stackexchange.com/a/242144/134069 -->
<script src="//tjcrowder.github.io/simple-snippets-console/snippet.js"></script>
Comments
Try setting do , stuff as properties of foo , return arguments passed to foo at stuff , return this from foo
var foo = function foo(args) {
this.stuff = function() {
return args
}
this.do = this;
return this
}
console.log(foo("bar").do.stuff())
dois a property or you miss spelled it for function like..do().stuff()?