How to print a value of parameter inside of function in javascript?

Question

I am trying to create a function pluralizeParam(n, word, pluralWord) with these requirements:

If n is 1, return the non-plural word (parameter word);otherwise, add an “s” to the plural word;
If the pluralWord parameter is provided, instead of adding an “s,” return the pluralWord.

What I have done so far is following:

function returnPluralWord(n, word, pluralWord) {
    if (n === 1) {
        return word;
    } else if (n === 1 && (word.lastIndexOf("s")) || (word.lastIndexOf("ess"))) {
        return word + "s";
    } else if (n !== 1 && word.length - 2 === "es") {
        return word + "s";
    } else if (pluralWord !== 'undefined') {
        return pluralWord;
    }
}

var result = returnPluralWord(2, "lioness", "lionesses");
console.log(result);

My problem is: it is not printing pluralWord. How do I do that? Thanks

Your second condition will never be executed; you've already handled n === 1, but more to the point, move your 4th case second. — DavidW
– DavidW, Commented Oct 12, 2017 at 17:16

Suren Srapyan · Accepted Answer · 2017-10-12 17:15:23Z

2

word.length - 2 can't never be equal to "es". You need also to rearrange your statements, the 2nd is already catched by 1.

When you use the word.lastIndexOf('s') ( which is wrong logic I think ), it returns the last index of the s character, not if it ends on s.

You can check String#endsWith and String#startsWith methods, these ones check if the string starts or ends with the given part

const str = 'less';
console.log(str.endsWith('s'))

answered Oct 12, 2017 at 17:15

Suren Srapyan

68.9k14 gold badges128 silver badges119 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to print a value of parameter inside of function in javascript?

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related