js题集20

1.实现如下代码功能

var deps = {

‘dep1‘: function () {return ‘this is dep1‘;},

‘dep2‘: function () {return ‘this is dep2‘;},

‘dep3‘: function () {return ‘this is dep3‘;},

‘dep4‘: function () {return ‘this is dep4‘;}

};

var di = new DI(deps);

var myFunc = di.inject(function (dep3, dep1, dep2) {

return [dep1(), dep2(), dep3()].join(‘ -> ‘);

});

myFunc();// ‘this is dep1 -> this is dep2 -> this is dep3‘);

=============your code==============

/**

* Constructor DependencyInjector

* @param {Object} - object with dependencies

*/

var DI = function (dependency) {

this.dependency = dependency;

};

// Should return new function with resolved dependencies

DI.prototype.inject = function (func) {

// Your code goes here

}