정규표현식

var patt = /(http(s)?://)?w+(.w+)+/gi;
var result = (aa.value.match(patt));

var patt = /(http(s)?://)?w+(.w+).S*/gi;

function chk(v) {
  str = "";
  re = new RegExp("hanmail.net", "i");
  re.test(v) ? (str = true) : (str = false);
  return str;
}

function chk(v) {
  str = "";
  re = new RegExp("^http://", "i");
  re.test(v) ? (str = "y") : (str = "n");
  alert(str);
}