jquery实现表单输入时提示文字滑动向上效果


Posted in Javascript onAugust 10, 2015

本文实例讲述了jquery实现表单输入时提示文字滑动向上效果。分享给大家供大家参考。具体如下:

这里基于jQuery实现的表单输入框提示效果,当不输入的时候,提示文字就显示在输入框中,当鼠标点击文本框要输入文字的时候,提示文字向滑出输入框,好像很个性也很智能的样子,用户体验比较不错,运用了CSS3的部分属性,因此在测试时,请尽量要用高版本的IE9或chrome和火狐等网页浏览器。

运行效果截图如下:

jquery实现表单输入时提示文字滑动向上效果

具体代码如下:

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>jQuery人性化表单标签提示</title>
<script type="text/javascript" src="jquery-1.6.2.min.js"></script>
<script type="text/javascript">
!function($){
 var defaults = {
 position: "top",
 animationTime: 500,
 easing: "ease-in-out",
 offset: 20,
 hidePlaceholderOnFocus: true
  };
 $.fn.animateLabel = function(settings, btn) {
 var position = btn.data("position") || settings.position,
 posx = 0,
 posy = 0;
 $(this).css({
  "left": "auto",
  "right": "auto",
  "position": "absolute",
  "-webkit-transition": "all " + settings.animationTime + "ms " + settings.easing,
  "-moz-transition": "all " + settings.animationTime + "ms " + settings.easing,
  "-ms-transition": "all " + settings.animationTime + "ms " + settings.easing,
  "transition": "all " + settings.animationTime + "ms " + settings.easing
 });
 switch (position) {
  case 'top':
  posx = 0;
  posy = ($(this).height() + settings.offset) * -1;
  $(this).css({
   "top": "0",
   "opacity": "1",
   "-webkit-transform": "translate3d(" + posx + ", " + posy + "px, 0)",
   "-moz-transform": "translate3d(" + posx + ", " + posy + "px, 0)",
   "-ms-transform": "translate3d(" + posx + ", " + posy + "px, 0)",
   "transform": "translate3d(" + posx + ", " + posy + "px, 0)"
  });
  break;
  case 'bottom':
  posx = 0;
  posy = ($(this).height() + settings.offset);
  $(this).css({
   "bottom": "0",
   "opacity": "1",
   "-webkit-transform": "translate3d(" + posx + ", " + posy + "px, 0)",
   "-moz-transform": "translate3d(" + posx + ", " + posy + "px, 0)",
   "-ms-transform": "translate3d(" + posx + ", " + posy + "px, 0)",
   "transform": "translate3d(" + posx + ", " + posy + "px, 0)"
  });
  break;
  case 'left':
  posx = ($(this).width() + settings.offset) * -1;
  posy = 0;
  $(this).css({
   "left": 0,
   "top": 0,
   "opacity": "1",
   "-webkit-transform": "translate3d(" + posx + "px, " + posy + "px, 0)",
   "-moz-transform": "translate3d(" + posx + "px, " + posy + "px, 0)",
   "-ms-transform": "translate3d(" + posx + "px, " + posy + "px, 0)",
   "transform": "translate3d(" + posx + "px, " + posy + "px, 0)"
  });
  break;
  case 'right':
  posx = $(this).width() + settings.offset;
  posy = 0;
  $(this).css({
   "right": 0,
   "top": 0,
   "opacity": "1",
   "-webkit-transform": "translate3d(" + posx + "px, " + posy + "px, 0)",
   "-moz-transform": "translate3d(" + posx + "px, " + posy + "px, 0)",
   "-ms-transform": "translate3d(" + posx + "px, " + posy + "px, 0)",
   "transform": "translate3d(" + posx + "px, " + posy + "px, 0)"
  });
  break;
 }
 }
 $.fn.removeAnimate = function(settings, btn) {
 var position = btn.data("position") || settings.position,
 posx = 0,
 posy = 0;
 $(this).css({
  "top": "0",
  "opacity": "0",
  "-webkit-transform": "translate3d(" + posx + ", " + posy + "px, 0)",
  "-moz-transform": "translate3d(" + posx + ", " + posy + "px, 0)",
  "-ms-transform": "translate3d(" + posx + ", " + posy + "px, 0)",
  "transform": "translate3d(" + posx + ", " + posy + "px, 0)"
 });
 }
 $.fn.label_better = function(options){
 var settings = $.extend({}, defaults, options),
  el = $(this),
  triggerIn = "focus",
  triggerOut = "blur";
 if(settings.easing == "bounce") settings.easing = "cubic-bezier(0.175, 0.885, 0.420, 1.310)"
 el.each(function( index, value ) {
  var btn = $(this),
   position = btn.data("position") || settings.position;
  btn.wrapAll("<div class='lb_wrap' style='position:relative; display: inline;'></div>")
  if( btn.val().length > 0) {
  var text = btn.data("new-placeholder") || btn.attr("placeholder");
  $("<div class='lb_label " + position + "'>"+ text + "</div>").css("opacity", "0").insertAfter(btn).animateLabel(settings, btn);
  }
  btn.bind(triggerIn, function() {
  if(btn.val().length < 1) {
   var text = btn.data("new-placeholder") || btn.attr("placeholder"),
   position = btn.data("position") || settings.position;
   $("<div class='lb_label " + position + "'>"+ text + "</div>").css("opacity", "0").insertAfter(btn).animateLabel(settings, btn);
  }
  if (settings.hidePlaceholderOnFocus == true) {
   btn.data("default-placeholder", btn.attr("placeholder"))
   btn.attr("placeholder", "")
  }
  btn.parent().find(".lb_label").addClass("active");
  }).bind(triggerOut, function() {
  if(btn.val().length < 1) {
   btn.parent().find(".lb_label").bind("transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd", function(){ $(this).remove(); }).removeAnimate(settings, btn)
  }
  if (settings.hidePlaceholderOnFocus == true) {
   btn.attr("placeholder", btn.data("default-placeholder"))
   btn.data("default-placeholder", "")
  }
  btn.parent().find(".lb_label").removeClass("active");
  });
 });
 }
}(window.jQuery);
</script>
<style>
html {
 height: 100%;
}
body {
 background: #272D30;
 padding: 0;
 text-align: center;
 font-family: 'open sans';
 position: relative;
 margin: 0;
 height: 100%;
}
.wrapper {
  height: auto !important;
  height: 100%;
  margin: 0 auto; 
  overflow: hidden;
}
a {
 text-decoration: none;
}
h1, h2 {
 width: 100%;
 float: left;
}
h1 {
 margin-top: 100px;
 color: #fff;
 text-shadow: 0 1px 5px rgba(0,0,0,0.5);
 margin-bottom: 5px;
 font-size: 70px;
 letter-spacing: -4px;
}
h2 {
 color: #5F7591;
 font-weight: bold;
 text-shadow: 0 1px 5px rgba(0,0,0,0.5);
 margin-top: 0;
 margin-bottom: 10px;
}
.pointer {
 color: #9b59b6;
 font-family: 'Pacifico', cursive;
 font-size: 30px;
 margin-top: 15px;
}
pre {
 margin: 80px auto;
}
pre code {
 padding: 35px;
 border-radius: 5px;
 font-size: 15px;
 background: rgba(0,0,0,0.1);
 border: rgba(0,0,0,0.05) 5px solid;
 max-width: 500px;
}
.main {
 float: left;
 width: 100%;
 margin: 0 auto;
}
.main h1 {
 padding:20px 50px;
 float: left;
 width: 100%;
 font-size: 60px;
 box-sizing: border-box;
 -webkit-box-sizing: border-box;
 -moz-box-sizing: border-box;
 font-weight: 100;
 margin: 0;
 padding-top: 25px;
 font-family: 'Pacifico';
 letter-spacing: 2px;
}
.main h1.demo1 {
 background: #1ABC9C;
}
.reload.bell {
 font-size: 12px;
 padding: 20px;
 width: 45px;
 text-align: center;
 height: 47px;
 border-radius: 50px;
 -webkit-border-radius: 50px;
 -moz-border-radius: 50px;
}
.reload.bell #notification {
 font-size: 25px;
 line-height: 140%;
}
.reload, .btn{
 display: inline-block;
 border: 4px solid #A2261E;
 border-radius: 5px;
 -moz-border-radius: 5px;
 -webkit-border-radius: 5px;
 background: #CC3126;
 display: inline-block;
 line-height: 100%;
 padding: 0.7em;
 text-decoration: none;
 color: #fff;
 width: 100px;
 line-height: 140%;
 font-size: 17px;
 font-family: open sans;
 font-weight: bold;
}
.reload:hover{
 background: #A2261E;
}
.btn {
 width: 200px;
 color: #fff;
 border: none;
 margin-left: 10px;
 background: rgba(255, 255, 255, 0.11);
}
.clear {
 width: auto;
}
.btn:hover, .btn:hover {
 background: rgba(255,255,255,0.3);
}
.btns {
 width: 410px;
 margin: 50px auto;
}
.credit {
 font-style: italic;
 text-align: center;
 color: #fff;
 padding: 10px;
 margin: 0 0 40px 0;
 float: left;
 width: 100%;
}
.credit a {
 color: #ccc;
 text-decoration: none;
 font-weight: bold;
}
.back {
 position: absolute;
 top: 0;
 left: 0;
 text-align: center;
 display: block;
 padding: 7px;
 width: 100%;
 box-sizing: border-box;
 -moz-box-sizing: border-box;
 -webkit-box-sizing: border-box;
 background: rgba(0, 0, 0, 0.65);
 font-weight: bold;
 font-size: 13px;
 color: #fff;
 -webkit-transition: all 200ms ease-out;
 -moz-transition: all 200ms ease-out;
 -o-transition: all 200ms ease-out;
 transition: all 200ms ease-out;
}
.back:hover {
 background: rgba(0, 0, 0, 0.85);
}
.bl_form {
 margin: 150px 0;
}
.bl_form input {
 padding-top: 15px;
 background: rgba(255,255,255,0.10);
 box-shadow: 0 2px 8px rgba(0,0,0,0.2);
 border: none;
 color: white;
 padding: 10px 15px;
 border-radius: 25px;
 font-size: 16px;
 outline: none;
}
.lb_wrap .lb_label.top, .lb_wrap .lb_label.bottom {
 left: 15px !important;
}
.lb_wrap .lb_label.left {
 left: 0;
}
.lb_label {
 font-weight: bold;
 color: #999;
}
.lb_label.active {
 color: #FFF;
}
</style>
<script>
 $(document).ready( function() {
 $(".label_better").label_better({
  easing: "bounce"
 });
 });
</script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head>
<body>
 <div class="wrapper">
   <div class="main">
   <div class="header">
  <h1>jQuery Label Better</h1>
  <h2>Label your form input like a boss</h2>
  <p class="credit">Created by Pete R., Founder of BucketListly</p>
  <div class="btns">
    </div>
   </div>
  <div class="page-container">
  <form class="bl_form">
   <input type="text" class="label_better" data-new-placeholder="Username" placeholder="Username" >
   <input type="email" class="label_better" data-new-placeholder="Email Address" placeholder="Email Address">
   <input type="password" value="abcdefg" class="label_better" data-new-placeholder="Password" placeholder="Password">
   <input type="password" value="abcdefg" class="label_better" data-new-placeholder="Shhh.." placeholder="Confirm Password">
  </form>
  </div>
 </div>
 </div>
<div style="text-align:center;clear:both">
</div>
</body>
</html>

希望本文所述对大家的jquery程序设计有所帮助。

Javascript 相关文章推荐
JavaScript 监听textarea中按键事件
Oct 08 Javascript
javascript 传统事件模型构造的事件监听器实现代码
May 31 Javascript
JavaScript 中的日期和时间及表示标准介绍
Aug 21 Javascript
JavaScript代码实现左右上下自动晃动自动移动
Apr 08 Javascript
jQuery 的 ready()的纯js替代方法
Nov 20 Javascript
jQuery内容筛选选择器实例代码
Feb 06 Javascript
JS检测是否可以访问公网服务器功能代码
Jun 19 Javascript
实现图片首尾平滑轮播(JS原生方法—节流)
Oct 17 Javascript
简单实现jQuery弹窗效果
Oct 30 jQuery
jQuery除指定区域外点击任何地方隐藏DIV功能
Nov 13 jQuery
vue filters的使用详解
Jun 11 Javascript
使用vue 国际化i18n 实现多实现语言切换功能
Oct 11 Javascript
javascript与Python快速排序实例对比
Aug 10 #Javascript
javascript密码强度校验代码(两种方法)
Aug 10 #Javascript
javascript实现数组内值索引随机化及创建随机数组的方法
Aug 10 #Javascript
jQuery解决input超多的表单提交
Aug 10 #Javascript
jQuery实现的图文高亮滚动切换特效实例
Aug 10 #Javascript
jQuery基于ajax实现带动画效果无刷新柱状图投票代码
Aug 10 #Javascript
javascript中caller和callee详解
Aug 10 #Javascript
You might like
个人站长制做网页常用的php代码
2007/03/03 PHP
PHP 杂谈《重构-改善既有代码的设计》之一 重新组织你的函数
2012/04/09 PHP
PHP fopen 读取带中文URL地址的一点见解
2012/09/25 PHP
PHP文件操作实例总结【文件上传、下载、分页】
2018/12/08 PHP
贴一个在Mozilla中常用的Javascript代码
2007/01/09 Javascript
JavaScript中this关键字使用方法详解
2007/03/08 Javascript
javascript(jquery)利用函数修改全局变量的代码
2009/11/02 Javascript
使用js+jquery实现无限极联动
2013/05/23 Javascript
火狐textarea输入法的bug的触发及解决
2013/07/24 Javascript
jquery插件之定时查询待处理任务数量
2014/05/01 Javascript
jQuery 1.9使用$.support替代$.browser的使用方法
2014/05/27 Javascript
angular中使用路由和$location切换视图
2015/01/23 Javascript
jQuery实现控制文字内容溢出用省略号(…)表示的方法
2016/02/26 Javascript
jQuery短信验证倒计时功能实现方法详解
2016/05/25 Javascript
JS 实现百度搜索功能
2018/02/01 Javascript
webpack dll打包重复问题优化的解决
2018/10/10 Javascript
JavaScript惰性载入函数实例分析
2019/03/27 Javascript
vue实现倒计时获取验证码效果
2020/04/17 Javascript
Python设计模式之抽象工厂模式
2016/08/25 Python
flask中主动抛出异常及统一异常处理代码示例
2018/01/18 Python
Python Unittest自动化单元测试框架详解
2018/04/04 Python
Python面向对象类的继承实例详解
2018/06/27 Python
tensorflow更改变量的值实例
2018/07/30 Python
Python 面向对象之封装、继承、多态操作实例分析
2019/11/21 Python
Python如何给函数库增加日志功能
2020/08/04 Python
Html5 canvas画图白板踩坑
2020/06/01 HTML / CSS
Bowflex美国官方网站:高级家庭健身器材
2017/12/22 全球购物
戴森比利时官方网站:Dyson BE
2020/10/03 全球购物
酒店总经理职务说明书
2014/02/26 职场文书
代办委托书怎样写
2014/04/08 职场文书
幼儿教师自我剖析材料
2014/09/29 职场文书
2016特色励志班级口号
2015/12/24 职场文书
反邪教教育心得体会
2016/01/15 职场文书
教学反思怎么写
2016/02/24 职场文书
PHP新手指南
2021/04/01 PHP
插件导致ECharts被全量引入的坑示例解析
2022/09/23 Javascript