Word wrap format - Node.js String

Node.js examples for String:Format

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Description

Word wrap format

Demo Code

//+ Jonas Raoni Soares Silva
//@ http://jsfromhell.com/string/wordwrap [rev. #2]

String.prototype.wordWrap = function(m, b, c){
  var i, j, l, s, r;
  if(m < 1)//from www .  j  ava 2s  . co m
    return this;
  for(i = -1, l = (r = this.split("\n")).length; ++i < l; r[i] += s)
    for(s = r[i], r[i] = ""; s.length > m; r[i] += s.slice(0, j) + ((s = s.slice(j)).length ? b : ""))
      j = c == 2 || (j = s.slice(0, m + 1).match(/\S*(\s)?$/))[1] ? m : j.input.length - j[0].length
      || c == 1 && m || j.input.length + (j = s.slice(m).match(/^\S*/)).input.length;
  return r.join("\n");
};

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