elementsPass.blur(function() {
var s = $(this);
var sValue = s.val();
if (sValue == '') {
var idValue = s.attr("id");
if (idValue) {
s.attr("id", idValue + "placeholderfriend");
}
var clsValue = s.attr("class");
if (clsValue) {
s.attr("class", clsValue + "placeholderfriend");
}
s.hide().next().show();
}
});
});
}
window.placeholderfriendfocus = placeholderfriend.focus;
})(jQuery);
使用很简单，例子如下：
复制代码 代码如下:
<html>
<head>
<script src="https://www.jb51.net/jquery.js" type="text/javascript"></script>
<script src="https://www.jb51.net/placeholderfriend.js" type="text/javascript"></script>
</head>
<body>
<input placeholder="账号/手机号码" ><br>
<input placeholder="密码" type="password" >
</body>
</html>
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