Vicky Gonsalves Vicky Gonsalves - 1 month ago 25
TypeScript Question

Capitalize Names in javascript

I have a function which Capitalize the sentences. But its not able to Capitalize names such as,

D'agostino, Fred
D'agostino, Ralph B.
D'allonnes, C. Revault
D'amanda, Christopher


I am expecting:

D'Agostino, Fred
D'Agostino, Ralph B.
D'Allonnes, C. Revault
D'Amanda, Christopher


Function:

getCapitalized(str){
var smallWords = /^(a|an|and|as|at|but|by|en|for|if|in|nor|of|on|or|per|the|to|vs?\.?|via)$/i;
return str.replace(/[A-Za-z0-9\u00C0-\u00FF]+[^\s-]*/g, function (match, index, title) {
if (index > 0 && index + match.length !== title.length &&
match.search(smallWords) > -1 && title.charAt(index - 2) !== ":" &&
(title.charAt(index + match.length) !== '-' || title.charAt(index - 1) === '-') &&
(title.charAt(index + match.length) !== "'" || title.charAt(index - 1) === "'") &&
title.charAt(index - 1).search(/[^\s-]/) < 0) {
return match.toLowerCase();
}
if (match.substr(1).search(/[A-Z]|\../) > -1) {
return match;
}
return match.charAt(0).toUpperCase() + match.substr(1);
});
}


Can anybody help me figuring out the issue? I have tried using
(title.charAt(index + match.length) !== "'" || title.charAt(index - 1) === "'")
but it doesn't help.

Answer

I'm not sure about all the use-cases you need to take care of, but for the question you asked, you can use regex that looks for word boundaries:

function capitalizeName(name) {
  return name.replace(/\b(\w)/g, s => s.toUpperCase());
}

console.log(capitalizeName(`D'agostino, Fred`));
console.log(capitalizeName(`D'agostino, Ralph B.`));
console.log(capitalizeName(`D'allonnes, C. Revault`));
console.log(capitalizeName(`D'amanda, Christopher`));

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