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Asked: 2024-09-25T12:59:39+05:30 In:

“JavaScript Word Capitalization: How Short Can You Go?”

I’ve been diving into some competitive coding challenges lately, and I stumbled upon this concept that I find super intriguing—golfing in JavaScript. You know, the art of writing code in as few characters as possible? It’s a fun mix of creativity and optimization, and I love a good challenge!

So, here’s the thing: I’m currently trying to create a function that takes a string of words and capitalizes the first letter of each word. The catch is that I want the entire function to be as concise as possible. Like, I want to see how few characters I can use to make this work!

I know JavaScript has some built-in functions that could potentially make this easier, but I’m curious if anyone has come up with really clever, short solutions that might not be immediately obvious. For example, I’ve seen people using array methods and string manipulation techniques, but I’m struggling to find that perfect balance between readability (in case I want to explain it to someone later) and brevity (because, let’s be real, it’s all about the character count!).

Also, if you get really creative and can manage to throw in some additional functionality—like handling edge cases such as multiple spaces between words or punctuation—bonus points! But honestly, I’m just looking for any kind of clever solution right now.

Does anyone have any tips or example snippets that could help me? Or maybe share how you approach this kind of problem? I’d love to see your thought process, especially if it involves any sneaky tricks or shortcuts that really compress the code.

Let’s see who can come up with the shortest, most efficient function! And if you have any recommendations for resources or techniques for improving my golfing skills, throw those my way too. Looking forward to your responses!

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    2 Answers


    1. const c=s=> s.replace(/(?:^|\\s)(\\w)/g,a=> a.toUpperCase());



    2. The challenge you’ve described is indeed a delightful exercise in golfing! To create a concise function in JavaScript that capitalizes the first letter of each word in a string, you can utilize the `split`, `map`, and `join` array methods. Here’s a compact solution that achieves your goal while keeping character count to a minimum: 

      f=s=>s.split` `.map(w=>w[0].toUpperCase()+w.slice(1)).join` `

      This function leverages template literals for splitting and joining the string, allowing whitespace to be managed intuitively. Each word’s first character is capitalized using the `toUpperCase` method, and then the rest of the word is concatenated using `slice`. For additional functionality, such as handling multiple spaces or punctuation gracefully, regex can be employed in conjunction with this method. A more advanced version might look something like this:

      f=s=>s.replace(/\b\w/g,m=>m.toUpperCase())

      This approach uses a regex to match the first character of each word and capitalize it while allowing for more robust handling of spaces and punctuation. To refine your golfing skills, experiment with different JavaScript methods, consider the use of regular expressions, and peruse challenges on competitive coding platforms for inspiration. Happy golfing!


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