- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="http://www.w3.org/1999/xhtml">
- <head>
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
- <title>无标题文档</title>
- <script src1="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js" type="text/javascript"></script>
- <script type="text/javascript">
- $(document).ready(function(){
- $("#focus .input_txt").each(function(){
- var thisVal=$(this).val();
- //判断文本框的值是否为空,有值的情况就隐藏提示语,没有值就显示
- if(thisVal!=""){
- $(this).siblings("span").hide();
- }else{
- $(this).siblings("span").show();
- }
- //聚焦型输入框验证
- $(this).focus(function(){
- $(this).siblings("span").hide();
- }).blur(function(){
- var val=$(this).val();
- if(val!=""){
- $(this).siblings("span").hide();
- }else{
- $(this).siblings("span").show();
- }
- });
- })
- $("#keydown .input_txt").each(function(){
- var thisVal=$(this).val();
- //判断文本框的值是否为空,有值的情况就隐藏提示语,没有值就显示
- if(thisVal!=""){
- $(this).siblings("span").hide();
- }else{
- $(this).siblings("span").show();
- }
- $(this).keyup(function(){
- var val=$(this).val();
- $(this).siblings("span").hide();
- }).blur(function(){
- var val=$(this).val();
- if(val!=""){
- $(this).siblings("span").hide();
- }else{
- $(this).siblings("span").show();
- }
- })
- })
- })
- </script>
- <style type="text/CSS">
- form{width:400px;margin:10px auto;border:solid 1px #E0DEDE;background:#FCF9EF;padding:30px;box-shadow:0 1px 10px rgba(0,0,0,0.1) inset;}
- label{display:block;height:40px;position:relative;margin:20px 0;}
- span{position:absolute;float:left;line-height:40px;left:10px;color:#BCBCBC;cursor:text;}
- .input_txt{width:398px;border:solid 1px #ccc;box-shadow:0 1px 10px rgba(0,0,0,0.1) inset;height:38px;text-indent:10px;}
- .input_txt:focus{box-shadow:0 0 4px rgba(255,153,164,0.8);border:solid 1px #B00000;}
- .border_radius{border-radius:5px;color:#B00000;}
- h2{font-family:"微软雅黑";text-shadow:1px 1px 3px #fff;}
- </style>
- </head>
- <body>
- <form class="border_radius" id="focus">
- <h2>聚焦型提示语消失 无效果请刷新</h2>
- <label><span>花瓣注册邮箱</span><input type="text" class="input_txt border_radius" /></label>
- <label><span>密码</span><input type="text" class="input_txt border_radius" /></label>
- </form>
- <form class="border_radius" id="keydown">
- <h2>输入型提示语消失</h2>
- <label><span>花瓣注册邮箱</span><input type="text" class="input_txt border_radius" /></label>
- <label><span>密码</span><input type="text" class="input_txt border_radius" /></label>
- </form>
- </body>
- </html>
- //该片段来自于http://www.codesnippet.cn/detail/260920136155.html
来源: http://www.codesnippet.cn/detail/260920136155.html