day 7

07_Day/07_day_functions.md

@@ -2,7 +2,7 @@
 
 ## [<< Day 6](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/06_Day/06_day_loops.md) | [Day 7 >>](#)
 
-![Thirty Days Of JavaScript](./day_1_7.png)
+![Thirty Days Of JavaScript](../images/banners/day_1_7.png)
 
 - [📔 Day 7](#%f0%9f%93%94-day-7)
   - [Functions](#functions)
@@ -53,7 +53,7 @@ function functionName() {
 functionName() // calling function by its name and with parentheses
 ```
 
-#### Function without a parameter and return
+### Function without a parameter and return
 
 Function can be declared without a parameter.
 
@@ -113,7 +113,7 @@ console.log(generateFullName())
 console.log(addTwoNumbers())
 ```
 
-#### Function with a parameter
+### Function with a parameter
 
 In a function we can pass different data types(number, string, boolean, object, function) as a parameter.
 
@@ -138,7 +138,7 @@ function square(number) {
 console.log(square(10))
 ```
 
-#### Function with two parameters
+### Function with two parameters
 
 ```js
 // function with two parameters
@@ -165,7 +165,7 @@ function printFullName(firstName, lastName) {
 console.log(printFullName('Asabeneh', 'Yetayeh'))
 ```
 
-#### Function with many parameters
+### Function with many parameters
 
 ```js
 // function with multiple parameters
@@ -196,7 +196,7 @@ console.log(areaOfCircle(10))
 
 ```
 
-#### Function with unlimited number of parameters
+### Function with unlimited number of parameters
 
 Sometimes we do not know how many arguments the user going to pass. Therefore, we should know how to write a function which can take unlimited number of arguments. A function declaration provides a function scoped arguments array like object. Any thing we passed as argument in the function can be access from arguments. Let us see an example