Руководство jQuery

    var input = $(":password").css({background:"yellow", border:"3px red solid"});
    $("div").text("For this type jQuery found " + input.length + ".")
            .css("color", "red");
    $("form").submit(function () { return false; }); // so it won't submit

"HTML"

<form>
    <input type="button" value="Input Button"/>
    <input type="checkbox" />
    <input type="file" />
    <input type="hidden" />
    <input type="image" />
    <input type="password" />
    <input type="radio" />
    <input type="reset" />
    <input type="submit" />
    <input type="text" />
    <select><option>Option<option/></select>
    <textarea></textarea>
    <button>Button</button>
  </form>
  <div>

"CSS"

  textarea { height:45px; }

"Живой пример jQuery"

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
						"http://www.w3.org/TR/html4/loose.dtd">
	<html>
	<head>
	<link href="http://test-drupal.ru/themes/slyweb/css/jqueryiframe.css" 
	rel="stylesheet" type="text/css"/>
	  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.0/jquery.min.js"></script>
	<script>
	  $(document).ready(function(){
	
    var input = $(":password").css({background:"yellow", border:"3px red solid"});
    $("div").text("For this type jQuery found " + input.length + ".")
            .css("color", "red");
    $("form").submit(function () { return false; }); // so it won't submit


	  });
	</script>

	</head>
	<body class="iframe">

	
<form>
    <input type="button" value="Input Button"/>
    <input type="checkbox" />
    <input type="file" />
    <input type="hidden" />
    <input type="image" />
    <input type="password" />
    <input type="radio" />
    <input type="reset" />
    <input type="submit" />
    <input type="text" />
    <select><option>Option<option/></select>
    <textarea></textarea>
    <button>Button</button>
  </form>
  <div>
  

	</body>
	</html>

	
	<style>
	
  textarea { height:45px; }

	</style>

Метод появился в jQuery 1.0 (http://api.jquery.com/password/)

Версия jQuery 1.4.2 Документ создан 2010-08-21