Regex get the middle section of each word javascript

Question

So essentially what I'm trying to do is loop through every word in a html document and replace the first letter of each word with 'A', the second - second last letter with 'b' and the last letter with 'c', completely replacing the word. I'm not sure if regular expressions are the way to go about doing this (should I instead be using for loops and checking each character?) however I'll ask anyway.

Currently I'm doing:

document.body.innerHTML = document.body.innerHTML.replace(/\\b(\\w)/g, 'A'); to get the first letter of each word

document.body.innerHTML = document.body.innerHTML.replace(/\\w\\b/g, 'c'); to get the last letter of each word

So if I had the string: Lorem ipsum dolor sit amet I can currently make it Aorec Apsuc Aoloc Aic Amec but I'd like to do Abbbc Abbbc Abbbc Abc Abbc in javascript.

Any help is much appreciated - regular expressions really confuse me.

Answer 1

You almost got it.

 str = "Lorem ipsum dolor sit amet" str = str .replace(/\\w/g, 'b') .replace(/\\b\\w/g, 'A') .replace(/\\w\\b/g, 'c') document.write(str); 

Fancier replacement rules can be handled with a callback function, eg

 str = "Lorem ipsum dolor sit amet" str = str.replace(/\\w+/g, function(word) { if (word === "dolor") return word; return 'A' + 'b'.repeat(word.length - 2) + 'c'; }); document.write(str);