bindKey source npm
_.bindKey(object, key, [partials])
Creates a function that invokes the method at object[key]
and prepends
any additional _.bindKey
arguments to those provided to the bound function.
This method differs from _.bind
by allowing bound functions to reference
methods that may be redefined or don't yet exist.
See Peter Michaux's article
for more details.
The _.bindKey.placeholder
value, which defaults to _
in monolithic
builds, may be used as a placeholder for partially applied arguments.
Arguments
- object (Object)
The object the method belongs to.
- key (string)
The key of the method.
- [partials] (...*)
The arguments to be partially applied.
Returns (Function)
Returns the new bound function.
Example
var object = {
'user': 'fred',
'greet': function(greeting, punctuation) {
return greeting + ' ' + this.user + punctuation;
}
};
var bound = _.bindKey(object, 'greet', 'hi');
bound('!');
// => 'hi fred!'
object.greet = function(greeting, punctuation) {
return greeting + 'ya ' + this.user + punctuation;
};
bound('!');
// => 'hiya fred!'
// using placeholders
var bound = _.bindKey(object, 'greet', _, '!');
bound('hi');
// => 'hiya fred!'