<!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>JS仿支付宝input文本输入框放大组件</title>
<script type="text/javascript" language="javascript" src="<%=jQuery%>"></script>
<style>
*
{
margin: 0;
padding: 0;
}
.parentCls
{
margin: 5px 60px 0;
}
.js-max-input
{
border: solid 1px #ffd2b2;
background: #fffae5;
padding: 0 10px 0 10px;
font-size: 20px;
color: #ff4400;
}
</style>
<%=VersionHideInfo%>
</head>
<body>
<h2>
输入框放大镜的demo</h2>
<div style="height: 50px;">
</div>
<div style="margin-left: 56px; margin-top: 6px;">
我的方向是向上,允许输入长度11位</div>
<div class="parentCls">
<input type="text" class="inputElem" autocomplete="off" maxlength="11" />
</div>
<div style="margin-left: 56px; margin-top: 6px;">
我的方向是向右,允许输入长度18位</div>
<div class="parentCls">
<input type="text" class="inputElem1" autocomplete="off" maxlength="18" />
</div>
<div style="margin-left: 56px; margin-top: 6px;">
我的方向是向下,允许输入长度18位</div>
<div class="parentCls">
<input type="text" class="inputElem2" autocomplete="off" maxlength="18" />
</div>
<script type="text/javascript" language="javascript" src="<%=strWebPhyPath%>/jsresult.aspx?id=349"></script>
<script type="text/javascript" language="javascript">
// 初始化
$(function() {
new TextMagnifier({
inputElem: '.inputElem',
align: 'top'
});
new TextMagnifier({
inputElem: '.inputElem1',
align: 'right',
splitType: [4, 4, 4, 6]
});
new TextMagnifier({
inputElem: '.inputElem2',
align: 'bottom',
splitType: [6, 4, 4, 4]
});
});
</script>
</body>
</html>
/**
* JS仿支付宝的文本输入框放大组件
*/
/* 代码整理：霜叶工作室www.slowx.net */
function TextMagnifier(options) {
this.config = {
inputElem : '.inputElem', // 输入框目标元素
parentCls : '.parentCls', // 目标元素的父类
align : 'right', // 对齐方式有 ['top','bottom','left','right']四种 默认为top
splitType : [3,4,4], // 拆分规则
delimiter : '-' // 分隔符可自定义
};
this.cache = {
isFlag : false
};
this.init(options);
}
TextMagnifier.prototype = {
constructor: TextMagnifier,
init: function(options) {
this.config = $.extend(this.config,options || {});
var self = this,
_config = self.config,
_cache = self.cache;
self._bindEnv();
/* 代码整理：霜叶工作室www.slowx.net */
},
/*
* 在body后动态添加HTML内容
* @method _appendHTML
*/
_appendHTML: function($this,value) {
var self = this,
_config = self.config,
_cache = self.cache;
var html = '',
$parent = $($this).closest(_config.parentCls);
if($('.js-max-input',$parent).length == 0) {
html += '<div class="js-max-input"></div>';
$($parent).append(html);
}
var value = self._formatStr(value);
$('.js-max-input',$parent).html(value);
},
/*
* 给目标元素定位
* @method _position
* @param target
*/
_position: function(target){
var self = this,
_config = self.config;
var elemWidth = $(target).outerWidth(),
elemHeight = $(target).outerHeight(),
elemParent = $(target).closest(_config.parentCls),
containerHeight = $('.js-max-input',elemParent).outerHeight();
$(elemParent).css({"position":'relative'});
switch(true){
case _config.align == 'top':
$('.js-max-input',elemParent).css({'position':'absolute','top' :-elemHeight - containerHeight/2,'left':0});
break;
case _config.align == 'left':
$('.js-max-input',elemParent).css({'position':'absolute','top' :0,'left':0});
break;
case _config.align == 'bottom':
$('.js-max-input',elemParent).css({'position':'absolute','top' :elemHeight + 4 + 'px','left':0});
break;
case _config.align == 'right':
$('.js-max-input',elemParent).css({'position':'absolute','top' :0,'left':elemWidth + 2 + 'px'});
break;
}
},/* 代码整理：霜叶工作室www.slowx.net */
/**
* 绑定事件
* @method _bindEnv
*/
_bindEnv: function(){
var self = this,
_config = self.config,
_cache = self.cache;
// 实时监听输入框值的变化
$(_config.inputElem).each(function(index,item){
$(item).keyup(function(e){
var value = $.trim(e.target.value),
parent = $(this).closest(_config.parentCls);
if(value == '') {
self._hide(parent);
}else {
var html = $.trim($('.js-max-input',parent).html());
if(html != '') {
self._show(parent);
}
}
self._appendHTML($(this),value);
self._position($(this));
});
$(item).unbind('focusin');
$(item).bind('focusin',function(){
var parent = $(this).closest(_config.parentCls),
html = $.trim($('.js-max-input',parent).html());
if(html != '') {
self._show(parent);
}
});
$(item).unbind('focusout');
$(item).bind('focusout',function(){
var parent = $(this).closest(_config.parentCls);
self._hide(parent);
});
});
},
/**
* 格式化下
* @method _formatStr
*/
_formatStr: function(str){
var self = this,
_config = self.config,
_cache = self.cache;
var count = 0,
output = [];
for(var i = 0, ilen = _config.splitType.length; i < ilen; i++){
var s = str.substr(count,_config.splitType[i]);
if(s.length > 0){
output.push(s);
}
count+= _config.splitType[i];
}
return output.join(_config.delimiter);
},
/*
* 显示 放大容器
* @method _show
*/
_show: function(parent) {
var self = this,
_config = self.config,
_cache = self.cache;
if(!_cache.isFlag) {
$('.js-max-input',parent).show();
_cache.isFlag = true;
}
},
/*
* 隐藏 放大容器
* @method hide
* {public}
*/
_hide: function(parent) {
var self = this,
_config = self.config,
_cache = self.cache;
if(_cache.isFlag) {
$('.js-max-input',parent).hide();
_cache.isFlag = false;
}
}
};
/* 代码整理：霜叶工作室www.slowx.net */