Removing all space from an array javascript

Question

I have an array that I need to remove spaces from, for example it returns like

[book, row boat,rain coat]

However, I would like to remove all the white spaces.

All the guides I saw online said to use .replace, but it seems like that only works for strings. Here is my code so far.

function trimArray(wordlist)
{
    for(var i=0;i<wordlist.length;i++)
    {
        wordlist[i] = wordlist.replace(/\s+/, "");
    }

}

I have also tired replace(/\s/g, '');

Any help is greatly appreciated!

You need to replace individual element: wordlist[i] = wordlist[i].replace(/\s+/, "");. Try using something like map, it's a much cleaner approach. Note that your replacement function will replace any whitespace. If you want to just trim, use the trim function: wordlist[i] = wordlist[i].trim() — nem035
– nem035, Commented Dec 10, 2017 at 3:46
[book, row boat,rain coat] - Doesn't look like a string array. Is this one string or are you getting back [" book", " row", " boat", " coat"] — nipuna-g
– nipuna-g, Commented Dec 10, 2017 at 3:47
Do you want ALL whitespace or just the preceding and trailing whitespace? So if your array is something like this: ["cat food","dogs ","fish tank"] do you want the spaces within cat food and fish tank gone too? Or will there never be any spaces within the strings? — Intervalia
– Intervalia, Commented Dec 10, 2017 at 3:55

Carl Edwards · Accepted Answer · 2017-12-10 03:52:37Z

5

First and foremost you need to enclose the words in your array quotes, which will make them into strings. Otherwise in your loop you'll get the error that they're undefined variables. Alternatively this could be achieved in a more terse manner using map() as seen below:

const arr = ['book', 'row boat', 'rain coat'].map(str => str.replace(/\s/g, ''));

console.log(arr);

edited Dec 10, 2017 at 3:52

answered Dec 10, 2017 at 3:46

Carl Edwards

14.6k12 gold badges69 silver badges131 bronze badges

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

Comments

Intervalia · Accepted Answer · 2017-12-10 16:48:55Z

1

This will remove all of the spaces, even those within the text:

    const result = ['  book','  row boat  ','rain coat  '].map(str => str.replace(/\s/g, ''));
    console.log(result);

and this will only remove preceding and trailing spaces:

    const result = ['  book',' row boat ','rain coat   '].map(str => str.trim());
    console.log(result);

edited Dec 10, 2017 at 16:48

answered Dec 10, 2017 at 3:58

Intervalia

11.1k2 gold badges35 silver badges71 bronze badges

Collectives™ on Stack Overflow

Removing all space from an array javascript

2 Answers 2

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related