String Formatter

string-formatter.js

function format(text, width) {
  const input = text.split(' ');
  let output = '';
  loop1:
  for (let i = 0, max = input.length; i < max; i++) {
    let row = input[i] + ' ';
    let nextWord = input[i + 1];
    loop2:
    while (typeof nextWord !== 'undefined') {
      if (row.length + nextWord.length > width) { break loop2; }
      row = row + nextWord + ' ';
      i++;
      nextWord = input[i + 1];
    }
    output = (i < max - 1) ? output + row.trim() + '\n' : output + row.trim();
  }
  return output;
}

format('test test test test test', 10);
/*
test test\n
test test\n
test
*/

StringFormatter.markdown

String Formatter

Function format() formats text string according to provided width argument.

• Each line contains as many words as possible.
• Strings do not start or end with spaces.
• New lines are separated with \n.
• Last string does not contain \n.

A script by V.

License.