CODEWITHSUNDEEP
javascriptangularstringnewline
Prithvi Raj
Prithvi Raj

Reputation: 1971

Print new line character as string in javascript

I'm working on a project which deals with strings a lot. I need to show what kind of delimiter is used in strings. I get that value from an API call. How do I print the delimiter to the console?

delimiter = '\n';

I want to print this on screen.

console.log(delimiter);
// prints "
          "

I need it to print \n instead of literally printing newline.

Upvotes: 1

Views: 5053

Answers (3)

2DH
2DH

Reputation: 1638

Using JSON.stringify() you can transform an actual new line character (whatever it might be) into its stringified version. Then after stripping leading and trailing double quotes, you'll get what you're after:

console.log(JSON.stringify(delimiter).replaceAll('"',''));

Update:

How to handle double quotes and control characters inside strings that are delimited with newlines?

This should do the trick:

const delimiter = '\n';
const delimitedText = 'a\nb\nc\nd';
const stringifiedDelimiter = JSON.stringify(delimiter).replaceAll('"','');
console.log(delimitedText.replaceAll(delimiter, stringifiedDelimiter));

Upvotes: 1

Vadim
Vadim

Reputation: 553

To display a (multi)line with already wrapped text, use this 🙂

There is a little regex thing, which removes \r and \n

const server = 'a\na';

const client = server.replace(/\r?\n/gm, '\\n');

console.log(1, server);
console.log(2, client);

Upvotes: 2

Vincent
Vincent

Reputation: 2093

The character \n is an escape sequence used for new lines.

That is why you need to use replace on the string if you want to see it in the console. Like so:

console.log(delimiter.replace('\n', '\\n'));

The extra backslash escapes the \n so it is not longer treated as a newline.

More about escape sequences can be found here:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String#escape_sequences

Upvotes: 4

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