I have completed the second day of this awesome challenge, really appreciate your efforts on these courses

02_Day_Data_types/02_day_starter/main.js

@@ -1 +1,155 @@
-// this is your main.js script
+// this is your main.js script
+// Exercise 01
+
+// Declare a variable named challenge and assign it an initial value
+let challenge = '30 Days Of JavaScript';
+
+// Print the string on the browser console
+console.log(challenge);
+
+// Print the length of the string
+console.log(challenge.length);
+
+// Change all characters to capital letters
+console.log(challenge.toUpperCase());
+
+// Change all characters to lowercase letters
+console.log(challenge.toLowerCase());
+
+// Slice out the first word of the string
+console.log(challenge.substr(0, 2)); // Assuming you want the first word "30"
+
+// Slice out the phrase "Days Of JavaScript"
+console.log(challenge.substring(3)); // Assuming you want to exclude the initial "30 "
+
+// Check if the string contains the word "Script"
+console.log(challenge.includes('Script'));
+
+// Split the string into an array
+console.log(challenge.split());
+
+// Split the string at the space
+console.log(challenge.split(' '));
+
+// Split the string at the comma and change it to an array
+let companies = 'Facebook, Google, Microsoft, Apple, IBM, Oracle, Amazon';
+console.log(companies.split(', '));
+
+// Change "30 Days Of JavaScript" to "30 Days Of Python"
+console.log(challenge.replace('JavaScript', 'Python'));
+
+// Character at index 15
+console.log(challenge.charAt(15));
+
+// Character code of J
+console.log(challenge.charCodeAt(challenge.indexOf('J')));
+
+// Position of first occurrence of 'a'
+console.log(challenge.indexOf('a'));
+
+// Position of last occurrence of 'a'
+console.log(challenge.lastIndexOf('a'));
+
+// Position of first occurrence of 'because' in a sentence
+let sentence = 'You cannot end a sentence with because because because is a conjunction';
+console.log(sentence.indexOf('because'));
+
+// Position of last occurrence of 'because' in a sentence
+console.log(sentence.lastIndexOf('because'));
+
+// Position of first occurrence of 'because' using search
+console.log(sentence.search('because'));
+
+// Remove trailing whitespace
+console.log(challenge.trim());
+
+// Check if it starts with '30 Days Of JavaScript'
+console.log(challenge.startsWith('30 Days Of JavaScript'));
+
+// Check if it ends with '30 Days Of JavaScript'
+console.log(challenge.endsWith('30 Days Of JavaScript'));
+
+// Find all occurrences of 'a' using match
+console.log(challenge.match(/a/g));
+
+// Concatenate strings
+console.log('30 Days of '.concat('JavaScript'));
+
+// Repeat the string
+console.log(challenge.repeat(2));
+
+//Excercise JavaScript level 02
+
+// Exercise 1
+console.log("The quote 'There is no exercise better for the heart than reaching down and lifting people up.' by John Holmes teaches us to help one another.");
+
+// Exercise 2
+console.log("\"Love is not patronizing and charity isn't about pity, it is about love. Charity and love are the same -- with charity you give love, so don't just give money but reach out your hand instead.\"");
+
+// Exercise 3
+if (typeof '10' !== 'number') {
+    '10' = parseInt('10');
+}
+
+// Exercise 4
+if (parseFloat('9.8') !== 10) {
+    '9.8' = parseFloat('10');
+}
+
+// Exercise 5
+const python = 'python';
+const jargon = 'jargon';
+console.log('on' in python && 'on' in jargon);
+
+// Exercise 6
+const sentence = 'I hope this course is not full of jargon.';
+console.log(sentence.includes('jargon'));
+
+// Exercise 7
+const randomNumber1 = Math.floor(Math.random() * 101);
+console.log(randomNumber1);
+
+// Exercise 8
+const randomNumber2 = Math.floor(Math.random() * 51) + 50;
+console.log(randomNumber2);
+
+// Exercise 9
+const randomNumber3 = Math.floor(Math.random() * 256);
+console.log(randomNumber3);
+
+// Exercise 10
+const jsString = 'JavaScript';
+const randomIndex = Math.floor(Math.random() * jsString.length);
+console.log(jsString[randomIndex]);
+
+// Exercise 11
+console.log("1 1 1 1 1");
+console.log("2 1 2 4 8");
+console.log("3 1 3 9 27");
+console.log("4 1 4 16 64");
+console.log("5 1 5 25 125");
+
+// Exercise 12
+const sentence2 = 'You cannot end a sentence with because because because is a conjunction';
+const extractedPhrase = sentence2.substr(30, 23);
+console.log(extractedPhrase);
+
+//Exercise level 03
+
+const sentence1 = 'Love is the best thing in this world. Some found their love and some are still looking for their love.';
+const countLove1 = (sentence1.match(/love/gi) || []).length;
+console.log(countLove1); // Output: 3
+
+//
+const sentence2 = 'You cannot end a sentence with because because because is a conjunction';
+const countBecause = (sentence2.match(/\bbecause\b/gi) || []).length;
+console.log(countBecause); // Output: 3
+
+//
+const text4 = 'He earns 5000 euro from salary per month, 10000 euro annual bonus, 15000 euro online courses per month.';
+
+// Extract numbers using regular expression and sum them up
+const numbers = text4.match(/\d+/g).map(Number);
+const totalAnnualIncome = numbers.reduce((total, num) => total + num, 0);
+
+console.log(totalAnnualIncome); // Output: 30000