Code changes for implicit and explicit

Author: Anushap976

explicit-and-implicit-conversion-in-javascript.js

@@ -18,15 +18,45 @@ Use console.log() to clearly show the before-and-after type conversions.
 
 */
 
-
-let result = "5" - 2;
+// the '-' operator makes "5" to 5 into a number, so it works as expected, but it could be clearer if we explicitly converts string to a number
+// Explicit type conversion to number for correct subtraction, using Number() convert "5" to 5
+let result = Number("5") - 2;     
 console.log("The result is: " + result);
 
-let isValid = Boolean("false");
+//Boolean conversion: converts non-empty string to true   
+let isValid = Boolean("false");    // "false"(string) is truthy, So isvalid becomes true since it gives output
 if (isValid) {
     console.log("This is valid!");
 }
 
+//explicit type conversion
 let age = "25";
-let totalAge = age + 5;
+// Converting age from string to number before adding
+let totalAge = Number(age) + 5;    
 console.log("Total Age: " + totalAge);
+
+// One example of implicit conversion
+
+let number = 30;
+let booleanValue = true;
+let sumOutput = number + booleanValue;  // implicit conversion booleanvalue 'True' gives value as 1 and returns output 
+console.log("Implicit conversion output: " + sumOutput, '-', typeof(sumOutput));
+
+//edge case : null implicitly converted to a number
+let nullValue = null;
+let sumWithNull = number + nullValue;    // implicit conversion: Null treated as 0
+console.log("Implicit conversion with Null: " + sumWithNull, '-', typeof(sumWithNull) );
+
+
+// One example of explicit conversion
+let firstNumber = "10";
+let secondNumber = 10.5;
+let expectedOutput = firstNumber + secondNumber;  // before explicit conversion returns string
+console.log("Explicit conversion output before type conversion: " + expectedOutput, '-', typeof(expectedOutput));
+let expectedOutput1 = Number(firstNumber) + secondNumber;  // explicit conversion to number returns number
+console.log("Explicit conversion output after type conversion: " + expectedOutput1, '-', typeof(expectedOutput1));
+
+// edge case : Nan explicitly converted to number
+let nanNumber = "Good morning";  
+let conversionOutput = Number(nanNumber);   // explicit conversion gives NaN 
+console.log("Explicit conversion of Nan: " + conversionOutput);