From 72f43c24e9f8dd7923730b59c2206ad00428d391 Mon Sep 17 00:00:00 2001
From: NadyaNikishina <45035053+NadyaNikishina@users.noreply.github.com>
Date: Tue, 23 Apr 2019 14:55:45 +0400
Subject: [PATCH] js-9 done Nikishina

---
 index.js | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 7dca45f..b118238 100644
--- a/index.js
+++ b/index.js
@@ -1,4 +1,6 @@
 module.exports = {
+    
+    events: {},
 
     /**
      * @param {String} event
@@ -6,7 +8,13 @@ module.exports = {
      * @param {Function} handler
      */
     on: function (event, subscriber, handler) {
-
+        if(!this.events.hasOwnProperty(event)) {
+           this.events[event] = []; 
+        }
+        
+        this.events[event].push([subscriber, handler.bind(subscriber)]);
+        
+        return this;
     },
 
     /**
@@ -14,6 +22,14 @@ module.exports = {
      * @param {Object} subscriber
      */
     off: function (event, subscriber) {
+        
+      for (var i = this.events[event].length - 1; i > 0; i--) {
+        if (this.events[event][i][0] === subscriber) {
+          this.events[event].splice(i, 1);
+        }
+      }
+        
+        return this;
 
     },
 
@@ -21,6 +37,13 @@ module.exports = {
      * @param {String} event
      */
     emit: function (event) {
+        if (this.events[event].length > 0){
+            for (var i = 0; i < this.events[event].length; i++){
+                var funcHandler = this.events[event][i][1];
+                funcHandler();
+            }
+        }
+        return this;
 
     }
 };