Using Function.prototype.bind with an array of arguments?

Question

How can I call Function.prototype.bind with an array of arguments, as opposed to hardcoded arguments? (Not using ECMA6, so no spread operator).

I\'m trying to put a

Answer 1

Generically, this schema suffices:

//obj = db
//fnName = 'find'
var args = [this||null].concat(Array.prototype.slice.apply(arguments);
obj[fnName].bind.apply(obj[fnName], args);

Answer 2

For those using ES6, Babel compiles:

db.find.bind(this, ...arguments)

to:

db.find.bind.apply(db.find, [this].concat(Array.prototype.slice.call(arguments)));

I think it's fair to say Babel is pretty definitive. Credit to @lorenz-lo-sauer though, it's almost identical.

Answer 3

Just had an alternative idea, partially apply the null value for context and then use apply to call the partially applied function.

bound = db.find.bind.bind(null).apply(null, arguments);

This removes the need for the slightly spooky looking [null].concat() in @Felix's answer.

Answer 4

I find following cleaner than the accepted answers

Function.bind.apply(db.find, [null].concat(arguments));