[转]jQuery为控件添加水印文字

本文转自:http://www.cnblogs.com/gzh4455/archive/2011/09/29/2195418.html

jQuery扩展:

jquery.tinywatermark-3.1.0.js文件代码:

(function($) {
    $.fn.watermark = function(c, t) {
        var e = function(e) {
            var i = $(this);
            if (!i.val()) {
                var w = t || i.attr('title'), $c = $($("<div />").append(i.clone()).html().replace(/type=\"?password\"?/, 'type="text"')).val(w).addClass(c);
                i.replaceWith($c);
                $c.focus(function() {
                    $c.replaceWith(i); setTimeout(function() {i.focus();}, 1);
                })
                .change(function(e) {
                    i.val($c.val()); $c.val(w); i.val() && $c.replaceWith(i);
                })
                .closest('form').submit(function() {
                    $c.replaceWith(i);
                });
            }
        };
        return $(this).live('blur change', e).change();
    };
})(jQuery);

或者访问网址:http://plugins.jquery.com/files/jquery.tinywatermark-3.1.0.js_.txt

用法:

<head runat="server">
    <title>WaterMark</title>
    <script src="../JS/jquery-1.5.2.min.js" type="text/javascript"></script>
    <script src="../JS/jquery.tinywatermark-3.1.0.js"type="text/javascript"></script>
    <script type="text/javascript" language="javascript">
    $(function()
    {     
       $("input[title='Month']").watermark('watermark','Title');
       $("textarea[title='Content']").watermark('watermark','Please input the content !');;
    });
    </script>
    <style type="text/css">
    .watermark {color:#999;}
    </style>
   
</head>
<body>
    <form id="form1" runat="server">
    <div>
   
    <div><input title="Month"/></div>
    <div><textarea id="TextArea1" cols="20" rows="2" title="Content"></textarea></div>
    </div>
    </form>
</body>
</html>

 

posted on 2013-09-25 08:33  freeliver54  阅读(1759)  评论(1编辑  收藏  举报

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