1 files changed, 44 insertions, 17 deletions

diff --git a/javascript.html.markdown b/javascript.html.markdown
index 85c8a52d..ecaf02c5 100644
--- a/javascript.html.markdown
+++ b/javascript.html.markdown
@@ -103,7 +103,7 @@ false;
 
 // ... which works with more than just strings
 "1, 2, " + 3; // = "1, 2, 3"
-"Hello " + ["world", "!"] // = "Hello world,!"
+"Hello " + ["world", "!"]; // = "Hello world,!"
 
 // and are compared with < and >
 "a" < "b"; // = true
@@ -180,6 +180,24 @@ myArray.length; // = 4
 // Add/Modify at specific index
 myArray[3] = "Hello";
 
+// Add and remove element from front or back end of an array
+myArray.unshift(3); // Add as the first element
+someVar = myArray.shift(); // Remove first element and return it
+myArray.push(3); // Add as the last element
+someVar = myArray.pop(); // Remove last element and return it
+
+// Join all elements of an array with semicolon
+var myArray0 = [32,false,"js",12,56,90];
+myArray0.join(";") // = "32;false;js;12;56;90"
+
+// Get subarray of elements from index 1 (include) to 4 (exclude)
+myArray0.slice(1,4); // = [false,"js",12]
+
+// Remove 4 elements starting from index 2, and insert there strings
+// "hi","wr" and "ld"; return removed subarray
+myArray0.splice(2,4,"hi","wr","ld"); // = ["js",12,56,90]
+// myArray0 === [32,false,"hi","wr","ld"]
+
 // JavaScript's objects are equivalent to "dictionaries" or "maps" in other
 // languages: an unordered collection of key-value pairs.
 var myObj = {key1: "Hello", key2: "World"};
@@ -222,7 +240,7 @@ while (true){
 var input;
 do {
     input = getInput();
-} while (!isValid(input))
+} while (!isValid(input));
 
 // The `for` loop is the same as C and Java:
 // initialization; continue condition; iteration.
@@ -248,6 +266,15 @@ for (var x in person){
     description += person[x] + " ";
 } // description = 'Paul Ken 18 '
 
+// The for/of statement allows iteration over iterable objects (including the built-in String, 
+// Array, e.g. the Array-like arguments or NodeList objects, TypedArray, Map and Set, 
+// and user-defined iterables).
+var myPets = "";
+var pets = ["cat", "dog", "hamster", "hedgehog"];
+for (var pet of pets){
+    myPets += pet + " ";
+} // myPets = 'cat dog hamster hedgehog '
+
 // && is logical and, || is logical or
 if (house.size == "big" && house.colour == "blue"){
     house.contains = "bear";
@@ -293,7 +320,7 @@ myFunction("foo"); // = "FOO"
 // automatic semicolon insertion. Watch out for this when using Allman style.
 function myFunction(){
     return // <- semicolon automatically inserted here
-    {thisIsAn: 'object literal'}
+    {thisIsAn: 'object literal'};
 }
 myFunction(); // = undefined
 
@@ -388,7 +415,7 @@ myFunc(); // = undefined
 // through `this`, even if it wasn't attached when it was defined.
 var myOtherFunc = function(){
     return this.myString.toUpperCase();
-}
+};
 myObj.myOtherFunc = myOtherFunc;
 myObj.myOtherFunc(); // = "HELLO WORLD!"
 
@@ -397,7 +424,7 @@ myObj.myOtherFunc(); // = "HELLO WORLD!"
 
 var anotherFunc = function(s){
     return this.myString + s;
-}
+};
 anotherFunc.call(myObj, " And Hello Moon!"); // = "Hello World! And Hello Moon!"
 
 // The `apply` function is nearly identical, but takes an array for an argument
@@ -420,7 +447,7 @@ boundFunc(" And Hello Saturn!"); // = "Hello World! And Hello Saturn!"
 
 // `bind` can also be used to partially apply (curry) a function.
 
-var product = function(a, b){ return a * b; }
+var product = function(a, b){ return a * b; };
 var doubler = product.bind(this, 2);
 doubler(8); // = 16
 
@@ -430,11 +457,11 @@ doubler(8); // = 16
 
 var MyConstructor = function(){
     this.myNumber = 5;
-}
+};
 myNewObj = new MyConstructor(); // = {myNumber: 5}
 myNewObj.myNumber; // = 5
 
-// Unlike most other popular object-oriented languages, JavaScript has no 
+// Unlike most other popular object-oriented languages, JavaScript has no
 // concept of 'instances' created from 'class' blueprints; instead, JavaScript
 // combines instantiation and inheritance into a single concept: a 'prototype'.
 
@@ -451,7 +478,7 @@ var myObj = {
 var myPrototype = {
     meaningOfLife: 42,
     myFunc: function(){
-        return this.myString.toLowerCase()
+        return this.myString.toLowerCase();
     }
 };
 
@@ -515,7 +542,7 @@ MyConstructor.prototype = {
 };
 var myNewObj2 = new MyConstructor();
 myNewObj2.getMyNumber(); // = 5
-myNewObj2.myNumber = 6
+myNewObj2.myNumber = 6;
 myNewObj2.getMyNumber(); // = 6
 
 // Built-in types like strings and numbers also have constructors that create
@@ -540,7 +567,7 @@ if (new Number(0)){
 // you can actually add functionality to a string, for instance.
 String.prototype.firstCharacter = function(){
     return this.charAt(0);
-}
+};
 "abc".firstCharacter(); // = "a"
 
 // This fact is often used in "polyfilling", which is implementing newer
@@ -556,7 +583,7 @@ if (Object.create === undefined){ // don't overwrite it if it exists
         Constructor.prototype = proto;
         // then use it to create a new, appropriately-prototyped object
         return new Constructor();
-    }
+    };
 }
 ```
 
@@ -582,13 +609,13 @@ of the language.
 [Eloquent Javascript][8] by Marijn Haverbeke is an excellent JS book/ebook with
 attached terminal
 
-[Eloquent Javascript - The Annotated Version][9] by Gordon Zhu is also a great
-derivative of Eloquent Javascript with extra explanations and clarifications for
-some of the more complicated examples.
-
 [Javascript: The Right Way][10] is a guide intended to introduce new developers
 to JavaScript and help experienced developers learn more about its best practices.
 
+[Javascript:Info][11] is a modern javascript tutorial covering the basics (core language and working with a browser)
+as well as advanced topics with concise explanations.
+
+
 In addition to direct contributors to this article, some content is adapted from
 Louie Dinh's Python tutorial on this site, and the [JS Tutorial][7] on the
 Mozilla Developer Network.
@@ -602,5 +629,5 @@ Mozilla Developer Network.
 [6]: http://www.amazon.com/gp/product/0596805527/
 [7]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/A_re-introduction_to_JavaScript
 [8]: http://eloquentjavascript.net/
-[9]: http://watchandcode.com/courses/eloquent-javascript-the-annotated-version
 [10]: http://jstherightway.org/
+[11]: https://javascript.info/