add TitleCaseConversion method

Conversions/TitleCaseConversion.js

@@ -0,0 +1,33 @@
+const TitleCaseConversion = (inputString) => {
+    // Extact all space seprated string.
+    const stringCollections = inputString.split(' ').map(word => {
+        let firstChar = '';
+        // Get a character code by the use charCodeAt method.
+        const firstCharCode = word[0].charCodeAt();
+        // If the character code lies between 97 to 122 it means they are in the lower case so convert it.
+        if(firstCharCode >= 97 && firstCharCode <= 122){
+            // Convert the case by use of the above explanation.
+            firstChar += String.fromCharCode(firstCharCode - 32);
+        }else{
+            // Else store the characters without any modification.
+            firstChar += word[0];
+        }
+        const newWordChar = word.slice(1).split('').map(char => {
+            // Get a character code by the use charCodeAt method.
+            const presentCharCode = char.charCodeAt()
+            // If the character code lies between 65 to 90 it means they are in the upper case so convert it.
+            if (presentCharCode >= 65 && presentCharCode <= 90) {
+                // Convert the case by use of the above explanation.
+                return String.fromCharCode(presentCharCode + 32)
+            }
+            // Else return the characters without any modification.
+            return char
+        });
+        // return the first converted character and remaining character string.
+        return firstChar + newWordChar.join('');
+    });
+    // convert all words in a string and return it.
+    return stringCollections.join(' ');
+}
+
+console.log(TitleCaseConversion("thIs is A mY best n string."));