Update 13-typeconversion.md

Author: sajidhamdard

notes/English/13-typeconversion.md

@@ -10,19 +10,19 @@ In case the behavior of the implicit conversion is not sure, the constructors of
 
 The Number 10 is converted to string '10' and then '+' concatenates both strings
 
-```
+```javascript
 var x = 10 + "20";
 var y = "20" + 10;
 ```
 
 ### The Boolean value true is converted to string 'true' and then '+'concatenates both the strings
 
-```
+```javascript
 var z = true + "10";
 console.log(x, y, z); //1020 2010 true10
 ```
 
-```
+```javascript
 var w = 10 - "5";
 var x = 10 * "5";
 var y = 10 / "5";
@@ -33,65 +33,65 @@ console.log(w, x, y, z); //5 50 2 0
 
 ### The Boolean value true is converted to number 1 and then operation is performed
 
-```
+```javascript
 var x = true + 2;
 ```
 
 ### The Boolean value false is converted to number 0 and then operation is performed
 
-```
+```javascript
 var y = false + 2;
 
 console.log(x, y); // 3 2
 ```
 
 ### Should output 'true' as string '10' is coerced to number 10
 
-```
+```javascript
 var x = 10 == "10";
 ```
 
 ### Should output 'true', as boolean true is coerced to number 1
 
-```
+```javascript
 var y = true == 1;
 ```
 
 ### Should output 'false' as string 'true' is coerced to NaN which is not equal to 1 of Boolean true
 
-```
+```javascript
 var z = true == "true";
 
 console.log(x, y, z); //true true false
 ```
 
 ### Number to String
 
-```
+```javascript
 let ans = String(10);
 console.log(typeof ans); //string
 ```
 
 ### String to Number
 
-```
+```javascript
 ans = Number("10");
 console.log(ans); //number
 ```
 
-```
+```javascript
 ans = Number("learnjavascript");
 console.log(ans); //NaN
 ```
 
 ### Number to Boolean
 
-```
+```javascript
 ans = Boolean(10);
 console.log(ans); //true
 ```
 
-```
+```javascript
 ans = Boolean(0);
 console.log(ans); //false
 ```
@@ -105,19 +105,19 @@ implicit type conversion me javascrupt otomatic ak type se dusri type me convert
   number se string me conversion
   string se number me convrsion
 
-```
+```javascript
 let x = "20";
 console.log(x / 2);
 ```
 
 ### Explicit type and manual type conversion
 
-```
+```javascript
 let x = "20";
 console.log(Number(x) + 20); // //string to number
 ```
 
-```
+```javascript
 let y = 10;
 console.log(string(y) + 200); //number to string
 ```