/**
* nl2br.
*
* @param {String} str
* @param {Boolean} replaceMode
* @param {Boolean} isXhtml Use XHTML
*
* @returns {String}
*/
function nl2br (str, replaceMode, isXhtml) {
var breakTag = (isXhtml) ? '<br />' : '<br>';
var replaceStr = (replaceMode) ? '$1'+ breakTag : '$1'+ breakTag +'$2';
return (str + '').replace(/([^>\r\n]?)(\r\n|\n\r|\r|\n)/g, replaceStr);
}
/**
* br2nl.
*
* @param {String} str
* @param {Boolean} replaceMode
* @returns {String}
*/
function br2nl (str, replaceMode) {
var replaceStr = (replaceMode) ? "\n" : '';
return str.replace(/<\s*\/?br\s*[\/]?>/gi, replaceStr);
}
Optionally, you could add white-space style with pre-line:
$("div").css('white-space', 'pre-line').text('First Line\nSecond Line\nThird Line');