How to trim the string using node.js?

Question

I am trying to trim the string. I google it for trim.

The tips i am getting.

name.trim(); -- Not recognized trim() function

npm install --save string

       var S = require('string');
       S('hello ').trim().s;    -- this also same issue

Can you any one assist me what is the problem of the above method or anything i have missed it?

okay can you post that you have loaded the string dependency? i mean can you ensure that you have the string node module loaded. — Jai
– Jai, Commented Jun 11, 2015 at 10:43
In case this happens to anyone else like it just did for me (and since this is the #1 hit in google right now for "trim is not a function") here's the answer. You are probably working with a Buffer and not a string like you think you are. This is probably caused by accepting input from process.stdin without first calling process.stdin.setEncoding('utf8') or whatever encoding you need. If you don't set the encoding then stdin will return a Buffer object not a string, and trim() is not defined on Buffer. Set the encoding, or call .toString() on the input to convert the Buffer to a string first. — Dave
– Dave, Commented Oct 16, 2016 at 1:41

Alex · Accepted Answer · 2015-06-11 10:43:19Z

33

You don't need jquery for this...

var str = "       Hello World!        ";
var trimmedStr = str.trim();
console.log(trimmedStr);

This will output the following in the console:

"Hello World!"

answered Jun 11, 2015 at 10:43

Alex

38.6k55 gold badges217 silver badges340 bronze badges

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

4 Comments

Vanarajan Over a year ago

It am getting correct after puting "str.toString().trim();"

Alex Over a year ago

var is common? what are you talking about

Alex Over a year ago

If you don't know what javascript var is, please start here. w3schools.com/js/js_variables.asp

felippe Over a year ago

Actually Vanarajan is correct, since var can be of any type. In this situation var is a string, but it might be not a string in other situations.

Luxknight007 · Accepted Answer · 2016-10-21 10:13:30Z

1

Try this work for me

var str = "  Hello World!    ";
var trim_leftright = str.replace(/^\s*|\s*$/g, ''); // left and right trim
console.log(trimleftright);

var trim_left = str.replace(/^\s*/, ''); // left trim
console.log(trim_left);

var trim_right = str.replace(/\s*$/, ''); // right trim
console.log(trim_right);

answered Oct 21, 2016 at 10:13

Luxknight007

1822 silver badges9 bronze badges

Comments

CinchBlue · Accepted Answer · 2015-06-11 10:53:51Z

0

You don't need to convert anything. From the Node.js console:

'    hello    '.trim()

works fine. It reduces to:

'hello'

as expected. You need only invoke the function on the string literal or a string variable.

edited Jun 11, 2015 at 10:53

answered Jun 11, 2015 at 10:46

CinchBlue

6,2401 gold badge30 silver badges60 bronze badges

Collectives™ on Stack Overflow

How to trim the string using node.js?

3 Answers 3

4 Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

4 Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related