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]]>用JavaScript计算å—符串å 用å—节数 http://www.aygfsteel.com/supercrsky/articles/204023.html々上善若水ã€?/dc:creator>々上善若水ã€?/author>Fri, 30 May 2008 02:09:00 GMT http://www.aygfsteel.com/supercrsky/articles/204023.html http://www.aygfsteel.com/supercrsky/comments/204023.html http://www.aygfsteel.com/supercrsky/articles/204023.html#Feedback 0 http://www.aygfsteel.com/supercrsky/comments/commentRss/204023.html http://www.aygfsteel.com/supercrsky/services/trackbacks/204023.html 原帖地å€
最˜q‘å’ŒJavaScript¾U ç¼ ä¸Šäº†ã€?/p>
function mbStringLength(s) {
var totalLength = 0;
var i;
var charCode;
for (i = 0; i < s.length; i++) {
charCode = s.charCodeAt(i);
if (charCode < 0x007f) {
totalLength = totalLength + 1;
} else if ((0x0080 <= charCode) && (charCode <= 0x07ff)) {
totalLength += 2;
} else if ((0x0800 <= charCode) && (charCode <= 0xffff)) {
totalLength += 3;
}
}
//alert(totalLength);
return totalLength;
}
]]> ‘…强的Javascript仿QQå¯ÆDˆªèœå• http://www.aygfsteel.com/supercrsky/articles/200960.html々上善若水ã€?/dc:creator>々上善若水ã€?/author>Fri, 16 May 2008 09:10:00 GMT http://www.aygfsteel.com/supercrsky/articles/200960.html http://www.aygfsteel.com/supercrsky/comments/200960.html http://www.aygfsteel.com/supercrsky/articles/200960.html#Feedback 1 http://www.aygfsteel.com/supercrsky/comments/commentRss/200960.html http://www.aygfsteel.com/supercrsky/services/trackbacks/200960.html 阅读全文
]]> 验è¯æ–‡äšg扩展åçš„js http://www.aygfsteel.com/supercrsky/articles/200417.html々上善若水ã€?/dc:creator>々上善若水ã€?/author>Wed, 14 May 2008 08:04:00 GMT http://www.aygfsteel.com/supercrsky/articles/200417.html http://www.aygfsteel.com/supercrsky/comments/200417.html http://www.aygfsteel.com/supercrsky/articles/200417.html#Feedback 0 http://www.aygfsteel.com/supercrsky/comments/commentRss/200417.html http://www.aygfsteel.com/supercrsky/services/trackbacks/200417.html /**
验è¯æ–‡äšg扩展å是å¦åˆæ³?br />
**/
function checkFiles(str)
{
var strRegex = "(.jpg|.png|.gif|.ps|.jpeg)$"; //用于验è¯å›„¡‰‡æ‰©å±•åçš„æ£åˆ™è¡¨è¾¾å¼?/span>
var re=new RegExp(strRegex);
if (re.test(str.toLowerCase())){
return true;
}
else{
alert("æ–‡äšgåä¸åˆæ³•,æ–‡äšg的扩展å必须为jpg,jpeg,gif或psæ ¼å¼");
return false;
}
}
LiveValidationä¸æ–‡ä¿®æ”¹ç‰ˆä¸‹è½?/a>
]]>
最˜q‘å’ŒJavaScript¾U ç¼ ä¸Šäº†ã€?/p>
é‡åˆ°˜q™ä¹ˆä¸€ä¸ªé—®é¢˜ï¼Œæ•°æ®åº“çš„å—符集äØ“UTF-8的，è¦åœ¨™åµé¢ä¸Šä‹É用JavaScript验è¯è¾“入的文本用UTF-8å˜å‚¨æ—¶å 用å—节长度。JavaScriptçš„String对象有length属性，但是˜q™ä¸ªè®¡ç®—的是å—符敎ͼŒä¸æ˜¯å—节敎ͼˆé—®é¢˜æ€ÀL˜¯¾˜ÀL¥è¦†åŽ»çš„，记得当年玩Delphi的时候，˜q˜å¾—写程åºè®¡½Ž—å—½W¦ä¸²çš„å—½W¦æ•°åQŒå› 为Delphiä¸Stringçš„length是å—节数...åQ‰ã€‚å·æ‡’一点的办法是将验è¯ä»£ç ä¸æœ€å¤§é•¿åº¦è®¾¾|®äØ“æ•°æ®åº“ä¸å¯¹åº”å—段的长度的1/3åQŒä½†æ˜¯è¿™æ ·å‡†¼‹®æ¥è¯´æœ‰ç‚¹ä¸åˆé€‚ã€?/p>
所以想办法在JavaScriptä¸åˆ¤æ–在UTF-8下å˜å‚¨çš„Stringçš„å—节数åQŒåœ¨¾|‘上扑ֈ°å¾ˆå¤šå…³äºŽUnicode介ç»çš„文档，最é‡è¦çš„是å—符¾~–ç 数值对应的å˜å‚¨é•¿åº¦åQ?/p>
UCS-2¾~–ç (16˜q›åˆ¶) UTF-8 å—节‹¹?二进åˆ?
0000 - 007F 0xxxxxxx åQ?å—节åQ?br />
0080 - 07FF 110xxxxx 10xxxxxx åQ?å—节åQ?br />
0800 - FFFF 1110xxxx 10xxxxxx 10xxxxxx åQ?å—节åQ?
于是代ç 如下åQ?/p>
function mbStringLength(s) {
var totalLength = 0; var i; var charCode; for (i = 0; i < s.length; i++) {
charCode = s.charCodeAt(i); if (charCode < 0x007f) { totalLength = totalLength + 1; } else if ((0x0080 <= charCode) && (charCode <= 0x07ff)) { totalLength += 2; } else if ((0x0800 <= charCode) && (charCode <= 0xffff)) { totalLength += 3; } } //alert(totalLength); return totalLength; }
实际ä¸?0x0080åˆ?x07ff之间的嗽W¦å¾ˆž®‘会在实际用戯‚¾“å…¥ä¸ç”¨åˆ°ã€?/p>
å‚考文档：
½E‹åºå‘˜è¶£å‘Œ™¯»ç‰©ï¼šè°ˆè°ˆUnicode¾~–ç http://www.lihuasoft.net/article/show.php?id=2778
]]>
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/** 验è¯æ–‡äšg扩展å是å¦åˆæ³?br />
**/ function checkFiles(str) { var strRegex = "(.jpg|.png|.gif|.ps|.jpeg)$"; //用于验è¯å›„¡‰‡æ‰©å±•åçš„æ£åˆ™è¡¨è¾¾å¼?/span> var re=new RegExp(strRegex); if (re.test(str.toLowerCase())){ return true; } else{ alert("æ–‡äšgåä¸åˆæ³•,æ–‡äšg的扩展å必须为jpg,jpeg,gif或psæ ¼å¼"); return false; } }]]>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML><HEAD> <TITLE> 作者：风ä¸å?nbsp;</TITLE> <META NAME="Generator" CONTENT="EditPlus"> <META NAME="Author" CONTENT=""> <META NAME="Keywords" CONTENT=""> <META NAME="Description" CONTENT=""><SCRIPT LANGUAGE="JavaScript"> //ž®†string转æ¢ä¸ºDate //str必须满èƒöå¦‚ä¸‹æ ¼å¼: 2008-04-29 function convertString2Date(str) { //用户split分隔出数¾l?ž®†åŒ…å?个元ç´?òq?æœ?æ—?/span> var splitArray = str.split("-"); // 用年,æœ?æ—¥æž„é€ æ—¥æœŸå¯¹è±?/span> // splitArray[0]-> year, splitArray[1]-> month, splitArray[2]->day // ˜q™æ—¶è¦æ³¨æ„月份是ä»?开始的 var date = new Date(splitArray[0], splitArray[1] - 1, splitArray[2]); return date; } // 得到date1å’Œdate2之间的间éš?/span> // date2è¦æ¯”date1å¤?/span> // dateè¦æ»¡‘›_¦‚ä¸‹æ ¼å¼? 2008-04-29 //å‚æ•°date1å’Œdate2¾cÕdž‹åº”该是String或Date // ¼‹®ä¿ä¸¤ç§¾cÕdž‹æ²¡æœ‰é—®é¢˜ function getIntervalBetweenTwoDates(date1, date2) { var realDate1 = date1; var realDate2 = date2; // 如果date1是Date¾cÕdž‹ž®×ƒ¸ç”¨è{æ?/span> if(!(date1 instanceof Date)) { realDate1 = convertString2Date(date1); } // 如果date2是Date¾cÕdž‹ž®×ƒ¸ç”¨è{æ?/span> if(!(date2 instanceof Date)) { realDate2 = convertString2Date(date2); } //得到¾l对å€?(realDate2.getTime() - realDate1.getTime())˜q”回的是毫秒所以è¦å…ˆé™¤1000 var interval = Math.abs((realDate2.getTime() - realDate1.getTime()))/(1000 * 60 * 60 * 24); return interval; } function listAllDatesBetweenTwoDates() { var date1 = document.getElementById("start").value; var date2 = document.getElementById("end").value; var target = document.getElementById("result"); var interval = getIntervalBetweenTwoDates(date1,date2); // 转æ¢string为Date date1 = convertString2Date(date1); var year = date1.getFullYear(); var month = date1.getMonth(); var date = date1.getDate(); --date; for(var i = 0 ; i <= interval ; ++i) { ++date; var theDate = new Date(year, month, date); var tempYear = theDate.getFullYear(); var tempMonth = theDate.getMonth() + 1; var tempDate = theDate.getDate(); var day = theDate.getDay(); var working = null; if(0 == day || 6 == day) // non-working day { working = "non-working day"; } else { working = "working day"; } var theResult = tempYear + "-" + tempMonth + "-" + tempDate + " is " + working; var div = document.createElement("div"); div.innerHTML = theResult; target.appendChild(div); } }</SCRIPT></HEAD><BODY> start date:<input type="text" length="20" id="start"><br>end date:<input type="text" length="20" id="end"><br><input type="button" onclick="listAllDatesBetweenTwoDates()" value="result"><div id="result"></div></BODY></HTML>
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<script language="JavaScript"><!--//æ— çñ”¾~©æ”¾å›„¡‰‡å¤§å°function bbimg(o){ var zoom=parseInt(o.style.zoom, 10)||100; zoom+=event.wheelDelta/12; if (zoom>0) o.style.zoom=zoom+'%'; return false;}--></script><img id="p1" src="mpg.jpg" onmousewheel="return bbimg(this)">
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<html><head><title></title><script language="javascript" type="text/javascript"> function check() { var idss = document.getElementsByName("id"); var flag = false; for(var i = 0; i < idss.length; i++) { if(idss[i].checked) { flag = true; } } alert(flag); return flag; }</script></head><body><form name="aa"> <input type="checkbox" name="id" /> <input type="checkbox" name="id" /> <input type="checkbox" name="id" /> <input type="checkbox" name="id" /> <input type="button" onclick="check();" value="test"/></form></body></html>
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ä¸æ¶‰åŠå®‰å…¨èƒ½ç”¨JSž®Þq”¨JS。。ã€?br />
<script language="javascript"> function SelectAll(tempControl) { var theBox=tempControl; xState=theBox.checked; elem=theBox.form.elements; for(i=0;i<elem.length;i++) if(elem[i].type=="checkbox" && elem[i].id!=theBox.id) { if(elem[i].checked!=xState) elem[i].click(); } } </script>™åµé¢ä¸åŠ 上：
<INPUT onclick="javascript:SelectAll(this);" type="checkbox">选ä¸æ‰€æœ‰çš„çŸæ¶ˆæ?/span>]]>
<script language="javascript" type="text/javascript"> function show_time() { var today,hour,second,minute,year,month,date,time; today=new Date(); year = today.getYear(); month = today.getMonth()+1; date = today.getDate(); hour = today.getHours(); minute =today.getMinutes(); second = today.getSeconds(); if(second < 10) { time = year + "-" + month + "-" + date +" " + hour + ":" + minute + ":0" + second; } else { time = year + "-" + month + "-" + date +" " + hour + ":" + minute + ":" + second; } document.getElementById("time").value = time; } setInterval(show_time,1000);</script><input type="text" id="time" />
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document.body.onmousemove=quickalt;document.body.onmouseover=getalt;document.body.onmouseout=restorealt;var tempalt='';function getalt(){ if(event.srcElement.title && (event.srcElement.title!='' || (event.srcElement.title=='' && tempalt!=''))){ altlayer.style.left=event.x; altlayer.style.top=event.y+20; altlayer.style.display=''; tempalt=event.srcElement.title; tempbg=event.srcElement.altbg; tempcolor=event.srcElement.altcolor; tempborder=event.srcElement.altborder; event.srcElement.title=''; altlayer.innerHTML=tempalt; if (typeof(tempbg)!="undefined"){altlayer.style.background=tempbg}else{altlayer.style.background="infobackground"} if (typeof(tempcolor)!="undefined"){altlayer.style.color=tempcolor}else{altlayer.style.color=tempcolor="infotext"} if (typeof(tempborder)!="undefined"){altlayer.style.border='1px solid '+tempborder;}else{altlayer.style.border='1px solid #000000';} }}function quickalt(){ if(altlayer.style.display==''){ altlayer.style.left=event.x; altlayer.style.top=event.y+10; }}function restorealt(){ event.srcElement.title=tempalt; tempalt=''; altlayer.style.display='none';}
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<body><span title="ä¸é”™å•?>默认效果</span><div style="display:none;border:1px solid #000000;background-color:#FFFFCC;font-size:12px;position:absolute;padding:2;" id=altlayer></div><!--注愘q™ä¸ªå¼•å…¥å¿…须在下é?->
<script type="text/javascript" src="../js/tip.js"></script></body>在想è¦åº”ç”?tipçš„æ–‡å—上é¢åŠ ä¸?lt;span></span>æ ‡ç¾å›_¯
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"><html> <head> <meta http-equiv="Content-Type" content="text/html; charset=GBK"/> <title>Untitled Document</title> <script type="text/javascript"> function validate(m,n) { var flag = true; if(m.value == "" && n == 0) { document.getElementById("username_info").innerHTML = "用户åä¸ä¸ø™ƒ½½I?/span>"; flag = false; } else { document.getElementById("username_info").innerHTML = ""; } if(m.value.length < 6 && n == 0) { document.getElementById("username_info").innerHTML = "用户å长度ä¸èƒ½å°äº?"; flag = false; } else { document.getElementById("username_info").innerHTML = ""; } if(m.value == "" && n == 1) { document.getElementById("password_info").innerHTML = "密ç ä¸èƒ½ä¸ºç©º"; flag = false; } else { document.getElementById("password_info").innerHTML = ""; } if(m.value.length < 6 && n == 1) { document.getElementById("password_info").innerHTML = "密ç 长度ä¸èƒ½ž®äºŽ6"; flag = false; } else { document.getElementById("password_info").innerHTML = ""; } return flag; } </script> </head> <body> <div align="center"> <form> <input type="text" id="username" onblur="validate(this,0);"/><div id="username_info"></div> <br/> <input type="password" id="password" onblur="validate(this,1);"/><div id="password_info"></div> <br/> <input type="submit" value="验è¯" /><input type="reset" value="é‡ç½®"/> <br/> </form> </div> </body></html>
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function　jtrim(s)　 {　 　 var　i,b=0,e=s.length;　 　　for(i=0;i<s.length;i++) //åŽÕd·¦½Iºæ ¼ 　　　　　if(s.charAt(i)!=' '){b=i;break;}　 　　 if(i==s.length)　 　　　　return　"";　 　 for(i=s.length-1;i>b;i--)　åŽÕd³½Iºæ ¼ 　　　 if(s.charAt(i)!=' '){e=i;break;}　 　return　s.substring(b,e+1);　 }
下é¢çš„更好点://åŽÕd·¦½Iºæ ¼; function ltrim(s){ return s.replace( /^\s*/, ""); } //åŽÕd³½Iºæ ¼; function rtrim(s){ return s.replace( /\s*$/, ""); } //åŽÕd·¦å³ç©ºæ ? function trim(s){ return rtrim(ltrim(s)); } ]]>
<script language="javascript" type="text/javascript">//分页处ç†å‡½æ•°function check(){ // å“应回èžR if(event.keyCode == 13) { var currentPage = document.getElementById("currentPage"); var totalPage = document.getElementById("totalPage"); var flag = true; if(isNaN(currentPage.value)) { alert('误‚¾“入数å?); currentPage.value = ""; currentPage.focus(); return false; } else { //处ç†è¾“入大于总页æ•?/span> if(currentPage.value > totalPage.value) currentPage.value = totalPage.value; //处熞®æ•°æˆ–è´Ÿæ•?/span> if(currentPage.value <= 0) currentPage.value = 1; //è·Œ™{ window.location = "user.action?currentPage=" + currentPage.value; currentPage.focus(); return true; } }}</script>
<input type="text" name="currentPage" size="2" onkeydown="return check();"/> <!-- ä¿å˜æ€»é¡µæ•?用于javascript处ç†åˆ†é¡µ --> <input type="hidden" id="totalPage" value="<s:property value="#page.totalPage"/>" />]]>