CODEWITHSUNDEEP
javascript
R.Spark
R.Spark

Reputation: 965

How to remove the last word in a string using JavaScript

How can I remove the last word in the string using JavaScript?

For example, the string is "I want to remove the last word."

After using removal, the string in the textbox will display "I want to remove the last"

I've seen how to remove the last character using the substring function, but because the last word can be different every time. Is there a way to count how many words are required to remove in JavaScript?

Upvotes: 68

Views: 118488

Answers (10)

maun kyaw
maun kyaw

Reputation: 1

To get the last word

const animals = "I want to remove the last word.".split(" ");
console.log(animals.slice(-1));

Expected output: word.

To remove the last word

console.log(animals.slice(0, -1).join(" ");

Expected output: "I want to remove the last"

Upvotes: 0

Shashank Kadne
Shashank Kadne

Reputation: 8101

Use the split function:

var myString = "I want to remove the last word";
var mySplitResult = myString.split(" ");
var lastWord =  mySplitResult[mySplitResult.length-1]

Upvotes: 3

Sean
Sean

Reputation: 1832

Use:

var str = "I want to remove the last word.";
var lastIndex = str.lastIndexOf(" ");

str = str.substring(0, lastIndex);

Get the last space and then get the substring.

Upvotes: 148

Pavithran Ravichandiran
Pavithran Ravichandiran

Reputation: 1899

If anyone else here is trying to split a string name in to last name and first name, please make sure to handle the case in which the name has only word.

let recipientName = _.get(response, 'shipping_address.recipient_name'); let lastWordIndex = recipientName.lastIndexOf(" "); let firstName = (lastWordIndex == -1) ? recipientName : recipientName.substring(0, lastWordIndex); let lastName = (lastWordIndex == -1) ? '' : recipientName.substring(lastWordIndex + 1);

Upvotes: 0

JohnPan
JohnPan

Reputation: 1210

Fooling around just for fun, this is a funny and outrageous way to do it!

"I want to remove the last word.".split(" ").reverse().slice(1).reverse().join(" ")

Upvotes: 4

abePdIta
abePdIta

Reputation: 123

Following answer by Amir Raminfar, I found this solution. In my opinion, it's better than accepted answer, because it works even if you have a space at the end of the string or with languages (like French) that have spaces between last word and punctuation mark.

"Je veux supprimer le dernier    mot !".replace(/[\W]*\S+[\W]*$/, '')
"Je veux supprimer le dernier"

It strips also the space(s) and punctuation marks before the last word, as the OP implicitly required.

Peace.

Upvotes: 8

indago
indago

Reputation: 2101

The shortest answer to this question would be as below, 

var str="I want to remove the last word".split(' ');
var lastword=str.pop();
console.log(str.join(' '));

Upvotes: 2

BenjaminRH
BenjaminRH

Reputation: 12182

An easy way to do that would be to use JavaScript's lastIndexOf() and substr() methods:

var myString = "I want to remove the last word";
myString = myString.substring(0, myString.lastIndexOf(" "));

Upvotes: 24

Amir Raminfar
Amir Raminfar

Reputation: 34179

You can do a simple regular expression like so:

"I want to remove the last word.".replace(/\w+[.!?]?$/, '')
>>> "I want to remove the last"

Finding the last index for " " is probably faster though. This is just less code.

Upvotes: 11

kennebec
kennebec

Reputation: 104840

You can match the last word following a space that has no word characters following it.

word=/s+\W*([a-zA-Z']+)\W*$/.exec(string);
if(word) alert(word[1])

Upvotes: 1

Related Questions