Date

“Function” Methods

_.partial(func, [partials])

source npm package

Creates a function that invokes func with partials prepended to the arguments it receives. This method is like _.bind except it does not alter the this binding.

The _.partial.placeholder value, which defaults to _ in monolithic builds, may be used as a placeholder for partially applied arguments.

Note: This method doesn't set the "length" property of partially applied functions.



引入版本

0.2.0

参数
func (Function) : The function to partially apply arguments to.
[partials] (...*) : The arguments to be partially applied.

返回值
(Function) : Returns the new partially applied function.

示例
function greet(greeting, name) {
  return greeting + ' ' + name;
}
 
var sayHelloTo = _.partial(greet, 'hello');
sayHelloTo('fred');
// => 'hello fred'
 
// Partially applied with placeholders.
var greetFred = _.partial(greet, _, 'fred');
greetFred('hi');
// => 'hi fred'