javascript time format yyyy-mm-dd hh:ss validation

javascript time format yyyy-mm-dd hh:ss validation

var patt=/2\d{3}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])[\s+](0[0-9]|1[0-9]|2[0-3]):(0[0-9]|[1-5][0-9])/;
$(document).ready(function(){
  $("#settings").submit(function(){
    var tk=true;
    $("#settings input[type=text]").each(function(){
      result = patt.exec($(this).val());
      if(result==null){
        var txt=$(this).parent().prev("td").text();
        alert(txt+"格式不对");
        tk=false;
        return false;
      }   
    }); 
    return tk; 
  }); 
});