What is the best way to approach this problem?

Check out this blog code to learn how to fix errors.

What should you do if you run into code errors?

You can find a solution by following this blog.

JS Problems geeksforgeeks Exercises and Solutions for Beginners

How to Capitalize the First Letter of a String in JavaScript 📌[All Method]️

Richard ParkerFebruary 8, 2022

1 minute read

How to Capitalize the First Letter of a String in JavaScript 📌[All Method]️ — How to Capitalize the First Letter of a String in JavaScript All Method

The step-by-step guide on this page will show you How to Capitalize the First Letter of a String in JavaScript. Error found! Why this could be happening? know and Learn everything.
Question: What is the best solution for this problem? Answer: This blog code can help you solve errors How to Capitalize the First Letter of a String in JavaScript. Question: What is causing this error and what can be done to fix it? Answer: Check out this blog for a solution to your problem.

How can we capitalize just the first letter of a string?

CSS gives us the ability to apply text-transform: capitalize; to DOM text elements, but what if we need to capitalize strings in JavaScript?

Given a string s, we would first need to obtain the first letter of the string.

let s = "corgi";
s.charAt(0); // 'c'

And then capitalize that letter.

s.charAt(0).toUpperCase(); // 'C'

We then need to obtain the rest of the word.

How to Sort a List of Tuples Based on Multiple Elements [All Method]️

s.slice(1); // 'orgi'

And then tack it on.

s.charAt(0).toUpperCase() + s.slice(1); // 'Corgi'

Let’s put this all together into a function. We’ll also add an extra check for non-string types.

const cap = (s) => {
  if (typeof s !== "string") return "";
  return s.charAt(0).toUpperCase() + s.slice(1);
};
cap('corgi'); // 'Corgi'
cap('shih tzu'); // 'Shih tzu'
cap(''); // ''

We can also add this function to the String prototype.

String.prototype.cap = function() {
  return this.charAt(0).toUpperCase() + this.slice(1);
};
'corgi'.cap() // 'Corgi'
'shih tzu'.cap() // 'Shih tzu'
''.cap() // ''

Revise the code and make it more robust with proper test case and check an error there before implementing into a production environment.
If you need help at any point, please send me a message and I will do my best to assist you.