Javascript (and jQuery) port of Rail's simple_format

index.js

function simpleFormat(text) {
  text = text.replace(/\r\n?/, "\n");
  var paragraphs = text.split(/\n\n+/);
  var p, b, blocks;
  for (var i = paragraphs.length - 1; i >= 0; i--) {
    p = $('<p />').prependTo($e);
    blocks = paragraphs[i].split(/\n/);
    b = [];

    for (var j = 0; j < blocks.length; j++) {
      b.push($('<div/>').text(blocks[j]).html());
    }

    p.html(b.join("\n<br />"));
  }
}