Merge branch 'master' into master

Author: juana pu

js/setTimeout-inside-loop.js

@@ -81,17 +81,22 @@ for(var i=0;i<5;i++){
 }
 //use call/bind method(2)
 for(var i=0;i<5;i++){
+//use bind/call to achieve this function, method(1)
+for(var i=0;i<10;i++){
+    setTimeout(console.log.bind(null,i),1000);
+}
+//use bind/call to achieve this function, method(2)
+for(var i=0;i<10;i++){
     setTimeout(function(index){
       console.log(index);
     }.bind(null,i),1000);
 }
 //use call/bind method(3)
+//use bind/call to achieve this function, method(3)
 for(var i=0;i<10;i++){
     setTimeout(function(index){
       return function(){ 
         console.log(index); 
       }
     }.call(null,i),1000);
 }
-
-