I'm creating an APA titleCase function, and I'm trying to figure out how to uppercase non-important words(the, a, an, etc). So far I've only figured out how to either uppercase or lowercase all small words, even small words that should be capitalized. I'm trying to keep small words that are not non-important words capitalized. For example, the first word of a title, and words followed by a colon and hyphen to name some. If a title object of "this title is An Example title For Javascript: volume-one," is passed into the function, I need it to return as "This Title is an Example Title for JavaScript: Volume-One." Can someone please help keep the small words lowercased.
function titleCase(title) {
title.toLowerCase();
var smallWords = ['a', 'an', 'and', 'as', 'at', 'but', 'by', 'en', 'for', 'if', 'in', 'nor', 'of', 'on', 'or', 'per', 'the', 'to'];
var titleSplit = title.split(' ');
for (var i = 0; i < titleSplit.length; i++) {
if (titleSplit[i] === titleSplit[0]) {
titleSplit[i] = titleSplit[i].charAt(0).toUpperCase() + titleSplit[i].slice(1);
} else if (titleSplit[i] === 'api' || titleSplit[i] === 'Api') {
titleSplit[i] = 'API';
} else if (titleSplit[i] === 'javascript' || titleSplit[i] === 'Javascript') {
titleSplit[i] = 'JavaScript';
} else if (smallWords.includes(titleSplit[i])) {
titleSplit[i] = titleSplit[i].toLowerCase();
}
}
title = titleSplit.join(' ');
title = title.replace(/(?:^|[\s-/])\w/g, match => {
return match.toUpperCase();
});
console.log('title:', title);
return title;
}
Here's how I do it.
const titleCase = string => {
const doNotCapitalize = ['a', 'an', 'the', 'at', 'by', 'for', 'in', 'of', 'on', 'to', 'up', 'and', 'as', 'but', 'or', 'nor'];
const words = string.split(' '); // array
const numOfWords = words.length - 1;
return string
.toLowerCase()
.split(' ')
.map((word, i) => {
// capitalize the first and last word regardless
if (i === 0 || i === numOfWords) {
return word.replace(word[0], word[0].toUpperCase());
}
return doNotCapitalize.includes(word) ? word : word.replace(word[0], word[0].toUpperCase());
})
.join(' ');
};