textarea js

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns:mudoo><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>POPHint & statInput 整合效果</title><style type="text/css"><!--* {padding: 0; margin: 0}body {margin: 3em; font: 12px Tahoma; background: #EAEAEA; color: #333333; line-height: 20px}input, textarea {font: 12px Tahoma; color: #666666; padding: 2px; border: solid 1px #DBDBDB}textarea {padding: 5px; line-height: 20px}p {margin: 1em 0}ul {}li {height: 1%; overflow: hidden; list-style-type: none}a {color: #666666; text-decoration: none}a:hover {color: #333333}.r {float: right}.l {float: left}.b {font-weight: bold}.gray {color: #666666; margin-top: 8px}.light {color:#FF6600; margin: 0 5px}.case {display: block; padding: 0 2em 2em 2em; border: solid 1px #EAEAEA; background: #FFFFFF; margin-bottom: 2em; height: 1%; overflow: hidden}.title {display:block; padding: .5em 2em .5em 1em; margin: 0 -2em 2em -2em; font-weight: bold; color: #000000; background: #FAFAFA; border-bottom: solid 1px #EAEAEA}.call {display:block;}.key {display: block; width: 6em; float: left}.type {display: block; width: 6em; float: left}.info {padding-left: 2em}.demo {margin-bottom: 2em}/* popHint Style */#popHint {position: absolute; line-height: normal}#popHint .popLeft, #popHint .popRight, #popHint .popAngle span, #popHintText, #popHint .popIcon {background-image: url(http://i.namipan.com/files/48ee6e2804bb4b1d84ecea96218e4a50081349ba960100008f09/0/PopHint.gif)}#popHint .popHeader {height: 1%; overflow: hidden !important; overflow /**/: visible} #popHint .popLeft {float: left; width: 5px; height: 24px; background-position: 0 0; background-repeat: no-repeat} #popHint .popRight {float: left; width: 5px; height: 24px; background-position: -10px -25px; background-repeat: no-repeat} #popHint .popAngle {clear: both; position: relative; height: 10px} #popHint .popAngle span {position: absolute; top: -3px; left: 15px; width: 7px; height: 13px; background-position: 0 -75px; background-repeat: no-repeat}#popHintText {float: left; color: #975400; height: 19px !important; height /**/: 24px; padding: 5px 0 0 0; white-space: nowrap; background-position: 0 -50px; background-repeat: repeat-x; overflow: hidden}    #popHintText .popIcon {float: left; width: 15px; height: 10px; margin: 1px 3px 0 0} #popHint .wrong {background-position: 0 -90px; background-repeat: no-repeat} #popHint .right {background-position: 0 -105px; background-repeat: no-repeat} /* 这里可以自己扩展图标.(15*10) */--></style><script language="javascript" type="text/javascript"><!--// 这里都是公用函数,挺多的...var// 获取元素$ = function(element) { return (typeof(element) == 'object' ? element : document.getElementById(element));},// 判断浏览器brower = function() { var ua = navigator.userAgent.toLowerCase(); var os = new Object(); os.isFirefox = ua.indexOf ('gecko') != -1; os.isOpera = ua.indexOf ('opera') != -1; os.isIE = !os.isOpera  &&  ua.indexOf ('msie') != -1; os.isIE7 = os.isIE  &&  ua.indexOf ('7.0') != -1; return os;},// 生成元素到refNodeappendElement = function(tagName, Attribute, strHtml, refNode) { var cEle = document.createElement(tagName); // 属性值 for (var i in Attribute){  cEle.setAttribute(i, Attribute[i]); } cEle.innerHTML = strHtml;  refNode.appendChild(cEle); return cEle;},// 获取元素坐标getCoords = function(node){ var x = node.offsetLeft; var y = node.offsetTop; var parent = node.offsetParent; while (parent != null){  x += parent.offsetLeft;  y += parent.offsetTop;  parent = parent.offsetParent; } return {x: x, y: y};},// 事件操作(可保留原有事件)eventListeners = [],findEventListener = function(node, event, handler){ var i; for (i in eventListeners){  if (eventListeners[i].node == node  &&  eventListeners[i].event == event  &&  eventListeners[i].handler == handler){   return i;  } } return null;},myAddEventListener = function(node, event, handler){ if (findEventListener(node, event, handler) != null){  return; } if (!node.addEventListener){  node.attachEvent('on' + event, handler); }else{  node.addEventListener(event, handler, false); } eventListeners.push({node: node, event: event, handler: handler});},removeEventListenerIndex = function(index){ var eventListener = eventListeners[index]; delete eventListeners[index]; if (!eventListener.node.removeEventListener){  eventListener.node.detachEvent('on' + eventListener.event,  eventListener.handler); }else{  eventListener.node.removeEventListener(eventListener.event,  eventListener.handler, false); }},myRemoveEventListener = function(node, event, handler){ var index = findEventListener(node, event, handler); if (index == null) return; removeEventListenerIndex(index);},cleanupEventListeners = function(){ var i; for (i = eventListeners.length; i > 0; i--){  if (eventListeners[i] != undefined){   removeEventListenerIndex(i);  } }};--></script><script language="javascript" type="text/javascript"><!--/*====================================================== - statInput 输入限制统计 - By Mudoo 2008.5 - 长度超出_max的话就截取...貌似没有更好的办法了======================================================*/function statInput(e, _max, _exp) { e   = $(e); _max  = parseInt(_max); _max  = isNaN(_max) ? 0 : _max; _exp  = _exp==undefined ? {} : _exp;  if(e==null || _max==0) {  alert('statInput初始化失败!');  return; }  var // 浏览器 _brower  = brower(); // 输出对象 _objMax  = _exp._max==undefined ? null : $(_exp._max), _objTotal = _exp._total==undefined ? null : $(_exp._total), _objLeft = _exp._left==undefined ? null : $(_exp._left), // 弹出提示 _hint  = _exp._hint==undefined ? null : _exp._hint;  // 初始统计 if(_objMax!=null) _objMax.innerHTML = _max; if(_objTotal!=null) _objTotal.innerHTML = 0; if(_objLeft!=null) _objLeft.innerHTML = 0;  // 设置监听事件 // 输入这个方法比较好. // 但是Opera下中文输入跟粘贴不能正确统计...相当BT的东西... // 如果不考虑Opera的话就用这个吧.否则就老老实实用计时器. if(_brower.isIE) {  myAddEventListener(e, "propertychange", stat); }else{  myAddEventListener(e, "input", stat); } /* // 用计时器的话就什么浏览器都支持了. var _intDo = null; myAddEventListener(e, "focus", setListen); myAddEventListener(e, "blur", remListen); function setListen() {  _intDo = setInterval(stat, 10); } function remListen() {  clearInterval(_intDo); } */  // 统计函数 var _len, _olen, _lastRN, _sTop; _olen = _len = 0; function stat() {  _len = e.value.length;  if(_len==_olen) return;  // 防止用计时器监听时做无谓的牺牲...  if(_len>_max) {   _sTop = e.scrollTop;   // 避免IE最后俩字符为'/r/n'.导致崩溃...   _lastRN = (e.value.substr(_max-1, 2) == "/r/n");   e.value = e.value.substr(0, (_lastRN ? _max-1 : _max));   if(_hint==true) popHint(e, "悟空你也太调皮了,为师跟你说过,叫你不要输那么多字~~.");   // 解决FF老是跑回顶部   if(_brower.isFirefox) e.scrollTop = e.scrollHeight;  }  _olen = _len = e.value.length;    // 显示已输入字数  if(_objTotal!=null) _objTotal.innerHTML = _len;  // 显示剩余可输入字数  if(_objLeft!=null) _objLeft.innerHTML = (_max-_len)<0 ? 0 : (_max-_len); }  stat();}/********************************************* - POPHint 弹出提示框 - By Mudoo 2008.5**********************************************/function popHint(obj, msg, initValues) { var _obj = $(obj), _objHint = $("popHint"), _msg = msg, _init = initValues;  // 初始化失败... if(_obj==undefined || _msg==undefined || _msg=="") return;  // 设置初始值 _init = _init==undefined ? {_type : "wrong", _event : "click"} : _init; // obj如果不可见。设置弹出对象为obj父元素 if(_obj.style.display=='none' || _obj.style.visibility=='hidden' || _obj.getAttribute('type')=='hidden') _obj = _obj.parentNode;  var _type = null, _event = null, _place = getCoords(_obj), _marTop = null, _objText = $("popHintText"),  // 初始化 init = function() {  var _hint = _obj.getAttribute("hint");  if(_hint=="false") return;    // 有的时候initValues不为空.但是只设置一个值...避免发生错误.再次设置初始值...  _type = _init._type==undefined ? "wrong" : _init._type;  _type = _type.toLowerCase();  _event = _init._event==undefined ? "click" : _init._event;  _event = _event.toLowerCase();    /*  ******************************************  popHtml  ******************************************  <div id="popHint">   <div id="popHeader">    <div class="popLeft"></div>    <div id="popHintText"><span class=/"popIcon wrong></span>请输入您的用户名!</div>    <div class="popRight"></div>   </div>   <div class="popAngle"><span></span></div>  </div>  */    // 好了.输出...  var _Html = "<div id=/"popHeader/">" +     " <div class=/"popLeft/"></div>" +     " <div id=/"popHintText/"></div>" +     " <div class=/"popRight/"></div>" +     "</div>"+     "<div class=/"popAngle/"><span></span></div>"    if(_objHint==null) {   _objHint = appendElement("div", {"id" : "popHint"}, _Html, document.body);   _objHint.style.display = "none";   _objText = $("popHintText");  }    show(); }, // 显示 show = function() {  _objHint.style.display = "";  _marTop = _objHint.offsetHeight;    _msg = "<span class=/"popIcon "+ _type +"/"></span>"+ _msg;  _objText.innerHTML = _msg;    _objHint.style.left = _place.x +"px";  _objHint.style.top = (_place.y-_marTop+8) +"px";    // 关闭触发事件  switch(_event) {   case "blur" :    myAddEventListener(_obj, 'blur', hide);    break;   //default :   case "click" :    myAddEventListener(document, 'mousedown', hide);    break;   //这里可以自己扩展很多事件...  } }, // 关闭 hide = function() {  _objHint.style.display = "none";  _objText.innerHTML = "";  // 移除关闭触发事件  myRemoveEventListener(_obj, 'blur', hide);  myRemoveEventListener(document, 'mousedown', hide); };  init();}--></script><script language="javascript" type="text/javascript"><!--/*********************************************  - statInput 演示函数*********************************************/myAddEventListener(window, "load", testStatInput);function testStatInput(){ statInput('Test_1', 100, {_max : 'stat_max', _total : 'stat_total', _left : 'stat_left', _hint : true});}/*********************************************  - popHint 演示函数*********************************************/function testPopHint() { if($('Test2').value==''){  popHint($('Test2'), 'Test2不能为空...', {_event : 'blur'});  $('Test2').focus();  return false; } if($('Test3').value==''){  popHint($('Test3'), 'Test3也不能为空...', 'blur');  $('Test3').focus();  return false; } if($('Test4').value==''){  popHint($('Test4'), 'Test4虽然看不见,但也不能为空...');  $('Test4').value='填一点进去...';  return false; } if($('Test5').value==''){  popHint($('Test5'), 'Test5也一样...');  return false; }}--></script></head><body><div class="case"> <div class="title"><a href="#" class="r">Top</a>statInput 调用方法</div> <div class="b">statInput(Element, MaxLen, {objMax, objTotal, objLeft, Hint});</div> <ul class="info gray">  <li><span class="key">Element:</span><span class="type">Object</span>限制统计对象 (*必须)</li>  <li><span class="key">MaxLen:</span><span class="type">Number</span>最大可输入长度 (*必须)</li>  <li><span class="key">objMax:</span><span class="type">Object</span>显示最大输入长度对象 (*可选)</li>  <li><span class="key">objTotal:</span><span class="type">Object</span>显示输入统计对象 (*可选)</li>  <li><span class="key">objLeft:</span><span class="type">Object</span>显示可输入长度对象 (*可选)</li>  <li><span class="key">Hint:</span><span class="type">Boolean</span>当长度超出上限时,是否提示 (*可选)</li> </ul></div><div class="case"> <div class="title"><a href="#" class="r">Top</a>statInput 演示</div> <textarea name="Test_1" id="Test_1" rows="10" style="width: 99%" >悟空你也太调皮了,我跟你说过,叫你不要乱扔东西, 乱扔东西这么做…… (咣当,悟空棍子掉在地上) 你看我还没有说完呢你把棍子又给扔掉了!月光宝盒是宝物,你把他扔掉会污染环境,唉,要是砸到小朋友那怎么办?就算没有砸到小朋友砸到那些花花草草也是不对的呀!</textarea> <div class="gray">最多可输入<span id="stat_max" class="b light"></span>,当前共<span id="stat_total" class="b light"></span>,还可输入<span id="stat_left" class="b light"></span></div></div><br /><br /><br /><br /><br /><div class="case"> <div class="title"><a href="#" class="r">Top</a>popHint 调用方法(目前只支持单行)</div> <div class="b">popHint(Element, Hint, {Type, Event});</div> <ul class="info gray">  <li><span class="key">Element:</span><span class="type">Object</span>弹出对象。根据它来定位的。  (*必须)</li>  <li><span class="key">Hint:</span><span class="type">String</span>弹出的信息,支持HTML可是不能换行。  (*必须)</li>  <li><span class="key">Type:</span><span class="type">String</span>弹出类型。其实说类型是不对的。只是定义个图标而已...(可自己在样式里加很多很多"类型")  (*可选)</li>  <li><span class="key">Event:</span><span class="type">String</span>关闭触发事件。目前只能绑定单个事件(默认click=document.onmousedown,blur=Element.onblur)  (*可选)</li> </ul> <br /><span style="color: #333333" class="b">详见:<a href="http://bbs.blueidea.com/thread-2856572-1-1.html" target="_blank" >http://bbs.blueidea.com/thread-2856572-1-1.html</a></span></div><div class="case"> <div class="title"><a href="#" class="r">Top</a>popHint 演示</div> <ul class="demo gray">  <li>测试blur不关闭:<input name="Test1_0" id="Test1_0" type="text" size="20" maxlength="20" onfocus="popHint(this, '失去焦点不会关闭提示.按TAB键看看');" value="" />  <a href="###"> </a></li>  <li>测试blur关闭:<input name="Test1_1" id="Test1_1" type="text" size="20" maxlength="20" onfocus="popHint(this, '文本框失去焦点就关闭.', {_event : 'blur'});" value="" /></li> </ul> <ul class="demo gray">  <li>Test2:<input name="Test2" id="Test2" type="text" size="20" maxlength="20" value="" /></li>  <li>Test3:<input name="Test3" id="Test3" type="text" size="20" maxlength="20" value="" /></li>  <li>Test4:<input name="Test4" id="Test4" type="hidden" size="20" maxlength="20" value="" /></li>  <li>Test5:<input name="Test5" id="Test5" type="text" size="20" maxlength="20" value="" style="display:none" /></li>  <li><input name="" type="button" onclick="testPopHint();" value="来测试啦" /></li> </ul></div></body></html>

 

 

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns:mudoo><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>statInput 输入限制统计</title><style type="text/css"><!--* {padding: 0; margin: 0}body {margin: 3em; font: 12px Tahoma; background: #EAEAEA; color: #333333; line-height: 20px}input, textarea {font: 12px Tahoma; color: #666666; padding: 2px; border: solid 1px #DBDBDB}textarea {padding: 5px; line-height: 20px}p {margin: 1em 0}ul {}li {height: 1%; overflow: hidden; list-style-type: none}a {color: #666666; text-decoration: none}a:hover {color: #333333}.r {float: right}.l {float: left}.b {font-weight: bold}.gray {color: #666666; margin-top: 8px}.light {color:#FF6600; margin: 0 5px}.case {display: block; padding: 0 2em 2em 2em; border: solid 1px #EAEAEA; background: #FFFFFF; margin-bottom: 2em; height: 1%; overflow: hidden}.title {display:block; padding: .5em 2em .5em 1em; margin: 0 -2em 2em -2em; font-weight: bold; color: #000000; background: #FAFAFA; border-bottom: solid 1px #EAEAEA}.call {display:block;}.key {display: block; width: 6em; float: left}.type {display: block; width: 6em; float: left}.info {padding-left: 2em}.demo {margin-bottom: 2em}--></style><script language="javascript" type="text/javascript"><!--// 这里都是公用函数,挺多的...var// 获取元素$ = function(element) { return (typeof(element) == 'object' ? element : document.getElementById(element));},// 判断浏览器brower = function() { var ua = navigator.userAgent.toLowerCase(); var os = new Object(); os.isFirefox = ua.indexOf ('gecko') != -1; os.isOpera = ua.indexOf ('opera') != -1; os.isIE = !os.isOpera  &&  ua.indexOf ('msie') != -1; os.isIE7 = os.isIE  &&  ua.indexOf ('7.0') != -1; return os;},// 事件操作(可保留原有事件)eventListeners = [],findEventListener = function(node, event, handler){ var i; for (i in eventListeners){  if (eventListeners[i].node == node  &&  eventListeners[i].event == event  &&  eventListeners[i].handler == handler){   return i;  } } return null;},myAddEventListener = function(node, event, handler){ if (findEventListener(node, event, handler) != null){  return; } if (!node.addEventListener){  node.attachEvent('on' + event, handler); }else{  node.addEventListener(event, handler, false); } eventListeners.push({node: node, event: event, handler: handler});},removeEventListenerIndex = function(index){ var eventListener = eventListeners[index]; delete eventListeners[index]; if (!eventListener.node.removeEventListener){  eventListener.node.detachEvent('on' + eventListener.event,  eventListener.handler); }else{  eventListener.node.removeEventListener(eventListener.event,  eventListener.handler, false); }},myRemoveEventListener = function(node, event, handler){ var index = findEventListener(node, event, handler); if (index == null) return; removeEventListenerIndex(index);},cleanupEventListeners = function(){ var i; for (i = eventListeners.length; i > 0; i--){  if (eventListeners[i] != undefined){   removeEventListenerIndex(i);  } }};--></script><script language="javascript" type="text/javascript"><!--/*====================================================== - statInput 输入限制统计 - By Mudoo 2008.5 - 长度超出_max的话就截取...貌似没有更好的办法了======================================================*/function statInput(e, _max, _exp) { e   = $(e); _max  = parseInt(_max); _max  = isNaN(_max) ? 0 : _max; _exp  = _exp==undefined ? {} : _exp;  if(e==null || _max==0) {  alert('statInput初始化失败!');  return; }  var // 浏览器 _brower  = brower(); // 输出对象 _objMax  = _exp._max==undefined ? null : $(_exp._max), _objTotal = _exp._total==undefined ? null : $(_exp._total), _objLeft = _exp._left==undefined ? null : $(_exp._left), // 弹出提示 _hint  = _exp._hint==undefined ? null : _exp._hint;  // 初始统计 if(_objMax!=null) _objMax.innerHTML = _max; if(_objTotal!=null) _objTotal.innerHTML = 0; if(_objLeft!=null) _objLeft.innerHTML = 0;  // 设置监听事件 // 输入这个方法比较好. // 但是Opera下中文输入跟粘贴不能正确统计...相当BT的东西... // 如果不考虑Opera的话就用这个吧.否则就老老实实用计时器. if(_brower.isIE) {  myAddEventListener(e, "propertychange", stat); }else{  myAddEventListener(e, "input", stat); } /* // 用计时器的话就什么浏览器都支持了. var _intDo = null; myAddEventListener(e, "focus", setListen); myAddEventListener(e, "blur", remListen); function setListen() {  _intDo = setInterval(stat, 10); } function remListen() {  clearInterval(_intDo); } */  // 统计函数 var _len, _olen, _lastRN, _sTop; _olen = _len = 0; function stat() {  _len = e.value.length;  if(_len==_olen) return;  // 防止用计时器监听时做无谓的牺牲...  if(_len>_max) {   _sTop = e.scrollTop;   // 避免IE最后俩字符为'/r/n'.导致崩溃...   _lastRN = (e.value.substr(_max-1, 2) == "/r/n");   e.value = e.value.substr(0, (_lastRN ? _max-1 : _max));   if(_hint==true) alert("悟空你也太调皮了,为师跟你说过,叫你不要输那么多字~~.");   // 解决FF老是跑回顶部   if(_brower.isFirefox) e.scrollTop = e.scrollHeight;  }  _olen = _len = e.value.length;    // 显示已输入字数  if(_objTotal!=null) _objTotal.innerHTML = _len;  // 显示剩余可输入字数  if(_objLeft!=null) _objLeft.innerHTML = (_max-_len)<0 ? 0 : (_max-_len); }  stat();}--></script><script language="javascript" type="text/javascript"><!--/*********************************************  - statInput 演示函数*********************************************/myAddEventListener(window, "load", testStatInput);function testStatInput(){ statInput('Test_1', 100, {_max : 'stat_max', _total : 'stat_total', _left : 'stat_left', _hint : true});}--></script></head><body><div class="case"> <div class="title"><a href="#" class="r">Top</a>statInput 调用方法</div> <div class="b">statInput(Element, MaxLen, {objMax, objTotal, objLeft, Hint});</div> <ul class="info gray">  <li><span class="key">Element:</span><span class="type">Object</span>限制统计对象 (*必须)</li>  <li><span class="key">MaxLen:</span><span class="type">Number</span>最大可输入长度 (*必须)</li>  <li><span class="key">objMax:</span><span class="type">Object</span>显示最大输入长度对象 (*可选)</li>  <li><span class="key">objTotal:</span><span class="type">Object</span>显示输入统计对象 (*可选)</li>  <li><span class="key">objLeft:</span><span class="type">Object</span>显示可输入长度对象 (*可选)</li>  <li><span class="key">Hint:</span><span class="type">Boolean</span>当长度超出上限时,是否提示 (*可选)</li> </ul></div><div class="case"> <div class="title"><a href="#" class="r">Top</a>statInput 演示</div> <textarea name="Test_1" id="Test_1" rows="10" style="width: 99%" >悟空你也太调皮了,我跟你说过,叫你不要乱扔东西, 乱扔东西这么做…… (咣当,悟空棍子掉在地上) 你看我还没有说完呢你把棍子又给扔掉了!月光宝盒是宝物,你把他扔掉会污染环境,唉,要是砸到小朋友那怎么办?就算没有砸到小朋友砸到那些花花草草也是不对的呀!</textarea> <div class="gray">最多可输入<span id="stat_max" class="b light"></span>,当前共<span id="stat_total" class="b light"></span>,还可输入<span id="stat_left" class="b light"></span></div></div></body></html>

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