common string methods

Author: yungyda

common-string-methods.js

@@ -1,91 +1,57 @@
-/*
-
-Practice Problem #1
-
-Activity 1: Searching Strings
-Write a program to:
-Check if the text "JavaScript" is in the string "Learning JavaScript is fun!" using includes.
-Find the position of the word "fun" in the string.
-
-Activity 2: Transforming Strings
-Convert the string " CODE BOOTCAMP " to lowercase and remove all extra whitespace.
-Replace "BOOTCAMP" with "JavaScript" in the transformed string.
-
-Activity 3: Breaking Apart a Sentence
-Split the sentence "Coding is fun and educational" into an array of words.
-
-Activity 4: Retrieving Substrings
-Retrieve the first character of "Bootcamp" using charAt.
-Extract the word "camp" from "Bootcamp" using slice.
-
-Advanced Challenge
-Write a program to process the following string:
-Customer: John Doe
-Order: Apple, Banana, Grape
-Total: $20.50
-Extract the customer name.
-Split the order into an array of items.
-Convert the total price to uppercase (e.g., "TOTAL: $20.50").
-
+// Starter Code
+let inputString = "  Welcome to the Coding Bootcamp! Learn JavaScript today.  ";
 
-Practice Problem #2
+// 1. Searching
 
-Objective
-Practice using common string methods to manipulate and extract information from strings.
+// Check if the word "JavaScript" is in the string using includes
+let hasJavaScript = inputString.includes("JavaScript");
+// Expected output: true
 
-Instructions:
-You are tasked with processing a single string and
-performing a series of operations using the string methods covered in the lesson.
-Each task corresponds to one or more methods and can be completed independently.
+// Find the position of the word "Coding" in the string using indexOf
+let codingPosition = inputString.indexOf("Coding");
+// Expected output: 15
 
-String to Use:
-  let inputString = "  Welcome to the Coding Bootcamp! Learn JavaScript today.  ";
+// Check if the string starts with "Welcome" using startsWith
+let startsWithWelcome = inputString.trim().startsWith("Welcome");
+// Expected output: true
 
-Tasks:
-Complete the following tasks and assign the results to the specified variables. Log each result to the console.
+// Check if the string ends with "today." using endsWith
+let endsWithToday = inputString.trim().endsWith("today.");
+// Expected output: true
 
-1. Searching
-  - Check if the word "JavaScript" is in the string using includes and assign the result to a variable named hasJavaScript.
-  - Find the position of the word "Coding" in the string using indexOf and assign the result to a variable named codingPosition.
-  - Check if the string starts with "Welcome" using startsWith and assign the result to a variable named startsWithWelcome.
-  - Check if the string ends with "today." using endsWith and assign the result to a variable named endsWithToday.
+// 2. Transforming
 
-2. Transforming
-  - Convert the string to all lowercase letters using toLowerCase and assign the result to a variable named lowercaseString.
-  - Convert the string to all uppercase letters using toUpperCase and assign the result to a variable named uppercaseString.
-  - Remove the extra spaces from the beginning and end of the string using trim and assign the result to a variable named trimmedString.
-  - Replace the word "JavaScript" with "coding" using replace and assign the result to a variable named replacedString.
+// Convert the string to all lowercase letters using toLowerCase
+let lowercaseString = inputString.toLowerCase();
+// Expected output: "  welcome to the coding bootcamp! learn javascript today.  "
 
-3. Breaking Apart
-  - Split the string into an array of words using split with a space (" ") as the delimiter and assign the result to a variable named wordsArray.
+// Convert the string to all uppercase letters using toUpperCase
+let uppercaseString = inputString.toUpperCase();
+// Expected output: "  WELCOME TO THE CODING BOOTCAMP! LEARN JAVASCRIPT TODAY.  "
 
-4. Retrieving
-  - Retrieve the first character of the trimmed string using charAt and assign the result to a variable named firstCharacter.
-  - Extract the word "Bootcamp" from the string using slice and assign the result to a variable named extractedBootcamp.
+// Remove the extra spaces from the beginning and end of the string using trim
+let trimmedString = inputString.trim();
+// Expected output: "Welcome to the Coding Bootcamp! Learn JavaScript today."
 
-*/
+// Replace the word "JavaScript" with "coding" using replace
+let replacedString = inputString.replace("JavaScript", "coding");
+// Expected output: "  Welcome to the Coding Bootcamp! Learn coding today.  "
 
-//Starter Code
-let inputString = "  Welcome to the Coding Bootcamp! Learn JavaScript today.  ";
+// 3. Breaking Apart
 
-// 1. Searching
-let hasJavaScript; // Your code here
-let codingPosition; // Your code here
-let startsWithWelcome; // Your code here
-let endsWithToday; // Your code here
+// Split the string into an array of words using split with a space (" ") as the delimiter
+let wordsArray = inputString.trim().split(" ");
+// Expected output: ["Welcome", "to", "the", "Coding", "Bootcamp!", "Learn", "JavaScript", "today."]
 
-// 2. Transforming
-let lowercaseString; // Your code here
-let uppercaseString; // Your code here
-let trimmedString; // Your code here
-let replacedString; // Your code here
+// 4. Retrieving
 
-// 3. Breaking Apart
-let wordsArray; // Your code here
+// Retrieve the first character of the trimmed string using charAt
+let firstCharacter = trimmedString.charAt(0);
+// Expected output: "W"
 
-// 4. Retrieving
-let firstCharacter; // Your code here
-let extractedBootcamp; // Your code here
+// Extract the word "Bootcamp" from the string using slice
+let extractedBootcamp = trimmedString.slice(19, 27);
+// Expected output: "Bootcamp"
 
 // Log all results
 console.log({