CODEWITHSUNDEEP
javascript
Riya
Riya

Reputation: 425

JavaScript return string with 2 char limit

I am trying to write a function which returns "Hello, World" string but the requirement is there should be only 2 char per line. In my function, I am using template literal and want to ignore newline \n. Can anyone suggest the best solution for it?

code::

f=_=>`H
el
lo
,w
or
ld
!`

Error ::

Expected: 'Hello, world!', instead got: 'H\nel\nlo\n,w\nor\nld\n!'

Upvotes: 3

Views: 1239

Answers (5)

user29473713
user29473713

Reputation: 11

f=
[]
.
at
[
"\
b\
i\
n\
d"
](
[
"\
H\
e\
l\
l\
o\
,\
 \
W\
o\
r\
l\
d\
!"
],
0)

// Test call to the function
console.log(f())

Upvotes: 1

TheHans255
TheHans255

Reputation: 2255

Like its syntactic parent, C, JavaScript allows you to escape newlines in the source with the backslash character:

f=
_=>
"\
H\
e\
l\
l\
o\
,\
W\
o\
r\
l\
d\
!\
";

document.write(f());

Here, every newline in the actual source is being ignored thanks to the \ immediately before it, allowing the string to continue to another line in the source while remaining one line in the parent.

Upvotes: 1

user8871181
user8871181

Reputation:

This method uses substring():

Javascript:

const output = document.getElementById('demo');

function trimString(str, lineLength) {  
  for (var i=0; i<str.length; i+=lineLength) {
    output.innerHTML += str.substring(i, i+lineLength);
    output.innerHTML += "<br />";
  }
}

trimString('Hello World', 2);

Don't forget the output:

<p id="demo"></p>


How it Works:
This will work by calling function trimString(str, lineLength);
  - Replace str with a string surrounded in quotes.
  - Replace lineLength with the number of chars per line.

Upvotes: 0

Ryan McCormick
Ryan McCormick

Reputation: 112

You could maybe try:

function makeTwoCharPerLine(input) {
  return input.split('').map((char, index) => {
    return (index + 1) % 2 === 0 ? 
      `${char}${String.fromCharCode(13)}${String.fromCharCode(10)}` : char;
  }).join('');
}

Upvotes: -1

Get Off My Lawn
Get Off My Lawn

Reputation: 36351

Your function could just use replace to replace the newlines:

f=_=>`H
el
lo
,w
or
ld
!`

console.log(f().replace(/\n/g, ''))

Upvotes: 0

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