partial

partial.js

/**
 *
 * @authors     yuChuanXi (http://yuchuanxi.com, wangfei.f2e@gmail.com)
 * @date        2016-03-24 17:43:55
 * @title       title
 * @description description
 */
'use strict';

// 部分参数函数
function partial ( fn ) {
  var args = Array.prototype.slice.call(arguments, 1);

  return function () {
    var arg = 0;

    for (var i = 0; i < args.length && arg < arguments.length; i++) {
      if ( args[i] === undefined ) {
        args[i] = arguments[arg++]
      }
    }

    return fn.apply(this, args);
  };
};

var delay = partial(setTimeout, undefined, 100);

delay(function () {
  console.log(111)
});

console.log(222)