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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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