Javascript String parseHashtag()

String.prototype.parseHashtag = function() {
 return this.replace(/([^A-Za-z0-9_\u4E00-\u9FA5]#|^#)([#A-Za-z0-9_\u4E00-\u9FA5]+)/g, function($0,$1,$2) {
     var t =$2;/*from   w ww . ja  va 2 s  .  com*/
     if(t.indexOf('#')!=-1){
        return $0;
     }
     t = '#'+t;
     var tag = t.replace("#","%23")
  return $1.substr(0,$1.length-1)+t.link("http://search.twitter.com/search?q="+tag);
 });
};
test = "#Simon is#writing ?#? a #post #??,#?? about #??...   #c#twitter, #???-??? and parsing hashtags as URLs";
document.writeln(test.parseHashtag())

String.prototype.parseHashtag = function() {
  return this.replace(/[#]+[A-Za-z0-9-_]+/g, function(t) {
    var tag = t.replace("#","%23")
    return t.link("http://search.twitter.com/search?q="+tag);
  });/*from   w  ww  .  j av a 2s.co m*/
};

String.prototype.parseHashtag = function() {
 return this.replace(/[#]+[A-Za-z0-9-_]+/g, function(t) {
  var tag = t.replace("#", "%23")
  return t.link("https://twitter.com/hashtag/" + tag + "?src=hash");
 });// w  w  w  . j a v  a2  s.  co  m
};

String.prototype.parseHashtag = function() {
 return this.replace(/[#]+[A-Za-z0-9-_]+/g, function(t) {
  var tag = t.replace("#","%23")
  return t.link("http://search.twitter.com/search?q="+tag);
 });/*from ww w. jav  a 2  s. c o  m*/
};

function linkify(text) {
 return text.parseURL().parseUsername().parseHashtag();
}

String.prototype.parseHashtag = function() {
 return this.replace(/[#]+[A-Za-z0-9-_]+/g, function(t) {
  var tag = t.replace("#","%23")
    var href="http://search.twitter.com/search?q="+tag
    var link="<a target='_blank' href='"+href+"'>"+t+"</a>"
  return link;/*from  w w  w.  j a  v a2  s  . c o m*/
 });
};