js 4

javascript/4-while-loops-and-for-each/README.md

@@ -1,55 +1,56 @@
-####While and For Each Loops
+While and For In Loops
+========================
 
 In this challenge, we're going to write a while loop, a For In loop, and nest them.
 
-###While Loops
+#### While Loops
 
 A while loop iterates until a condition is no longer true. For example:  
-
+```
-		while(greg == alive){
+while(greg == alive){
 	live_year(1)
 	age++
-		}
+}
-
+```
 Seemingly, a while loop could be endless. In that case, we have to break it. Take the following example:  
+```
+i = 0
 
-		i = 0
+while(true){
-
-		while(true){
 	i++
 	print("I'm an endless loop")
 	if(i >= 50){
 		break;
 	}
-		}
+}
-
+```
 This will run exactly 50 times.
 
-###For In
+#### For In
 
 A For In loop iterates through each index in the data structure. In an array, an index is an integer, that starts at 0. Take this example:  
+```
+var array = ['john', 'bobby', 'homa', 'stevie', 'rob']
 
-		var array = ['john', 'bobby', 'homa', 'stevie', 'rob']
+for(var i in array) {
-
-		for(var i in array){
 	console.log(i) // prints 0, 1, 2, 3, 4
-		}
+}
-
+```
 In an object however, the index is a string. Check this out:  
+```
+var obj = {'john': 'student', 'bobby': 'programmer', 'homa': 'actress', 'stevie': 'gamer'}
 
-		var obj = {'john': 'student', 'bobby': 'programmer', 'homa': 'actress', 'stevie': 'gamer'}
+for(var k in obj) {
-
-		for(var k in obj){
 	console.log(k) // prints 'john', 'bobby', 'homa', 'stevie'
-		}
+}
-
+```
-###Sandbox
+#### Sandbox
 
 Try this on your own in your node console or browser console. Declare some objects, iterate through them, print them out.
 
 Also check out [.forEach](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach)
 
-###Multiplication Tables
+#### Multiplication Tables
 
 Using any loop / loops of your choosing, write code that prints the multiplication tables up to a number input by the user in a form.
 
@@ -58,9 +59,9 @@ Create the form that gets the user input yourself above the #printout div, and a
 Bonus if you actually use a table.
 
 Your return should look something like this:
-
+```
-		// userinput = 7
+// userinput = 7
-
+```
 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |  
 1 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |  
 2 | 2 | 4 | 6 | 8 | 10| 12| 14|  
@@ -69,4 +70,3 @@ Your return should look something like this:
 5 | 5 | 10| 15| 20| 25| 30| 35|  
 6 | 6 | 12| 18| 24| 30| 36| 42|  
 7 | 7 | 14| 21| 28| 35| 42| 49|
-