当前位置: 首页 > 图文教程 > 网络编程 > Javascript > 一个不错的可以检测多中浏览器的函数和其它功能

Javascript
javascript 面向对象的经典实例代码
javascript prototype原型操作笔记
JavaScript 常见对象类创建代码与优缺点分析
javascript 混合的构造函数和原型方式,动态原型方式
测试JavaScript字符串处理性能的代码
JQuery 表单中textarea字数限制实现代码
jQuery Selectors(选择器)的使用(六、属性篇)
IE浏览器打印的页眉页脚设置解决方法
javascript检测(控制 )上传文件大小
jquery 双色表格实现代码
JavaScript Cookie的读取和写入函数
JavaScript 利用Cookie记录用户登录信息
JavaScript Cookie显示用户上次访问的时间和次数
JavaScript Cookie 直接浏览网站分网址
javascript OFFICE控件测试代码
javascript setTimeout和setInterval 的区别
javascript弹出窗口 window.open使用方法以及参数说明分析篇
可以用来搜索当前页面内容的js代码
动态调整textarea中字体的大小代码
为指定元素增加样式的js代码

Javascript 中的 一个不错的可以检测多中浏览器的函数和其它功能


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-09-12   浏览: 202 ::
收藏到网摘: n/a

//Examine the browser 检测浏览器的函数
var userAgent = navigator.userAgent.toLowerCase();
var is_opera = (userAgent.indexOf('opera') != -1);
var is_saf = ((userAgent.indexOf('applewebkit') != -1) || (navigator.vendor == 'Apple Computer, Inc.'));
var is_webtv = (userAgent.indexOf('webtv') != -1);
var is_ie = ((userAgent.indexOf('msie') != -1) && (!is_opera) && (!is_saf) && (!is_webtv));
var is_ie4 = ((is_ie) && (userAgent.indexOf('msie 4.') != -1));
var is_moz = ((navigator.product == 'Gecko') && (!is_saf));
var is_kon = (userAgent.indexOf('konqueror') != -1);
var is_ns = ((userAgent.indexOf('compatible') == -1) && (userAgent.indexOf('mozilla') != -1) && (!is_opera) && (!is_webtv) && (!is_saf));
var is_ns4 = ((is_ns) && (parseInt(navigator.appVersion) == 4));
var is_mac = (userAgent.indexOf('mac') != -1);
//Global registers
var currentblogid;
var currentstarid;
var currentcommentid;
var switchcomandmes;
var securitycodejs=null;
var onetimecounter=1;
//Get absolute path, fix bug of IE when base path is set
var gotourl = location.href;
var absbaseurl;
var abspath;
var r_identifier=gotourl.lastIndexOf("/read.php/");
var r_identifier2=gotourl.lastIndexOf("/post/");
var r_identifier3=gotourl.lastIndexOf("/tag/");
if (r_identifier==-1) {
r_identifier=r_identifier2;
}
if (r_identifier==-1) {
r_identifier=r_identifier3;
}
if (r_identifier!=-1) {
absbaseurl = gotourl.substr(0, r_identifier)+"/";
var simplegotourl=absbaseurl.replace("http://", '');
r_identifier2=simplegotourl.indexOf("/");
abspath=simplegotourl.substr(r_identifier2+1);
} else {
absbaseurl='';
abspath=null;
}
//Is Ajax supported?
if ((is_ie & !is_ie4) || is_moz || is_saf || is_opera) var shutajax=0;
else var shutajax=1;
//For firefox, tell Firefox not to display the content you input in last session
if (is_moz) {
var tmp_c=document.getElementById('v_content');
if (tmp_c) tmp_c.value='';
}
//Show/Hide a DIV
function showhidediv(id){
try{
var panel=document.getElementById(id);
if(panel){
if(panel.style.display=='none'){
panel.style.display='block';
}else{
panel.style.display='none';
}
}
}catch(e){}
}
function addhtml (id, htmlcode, uniqueid) {
var panel=document.getElementById(id);
var hiddenpannel=document.getElementById(uniqueid);
if(panel){
hiddenpannel.value='';
hiddenpannel.value=panel.innerHTML;
panel.innerHTML=hiddenpannel.value+htmlcode;
hiddenpannel.value+=htmlcode;
}
}
function showadminreply (divid) {
switchcomandmes='reply';
var cleanid=divid.replace('com_', '');
var inputcontent="<form action='"+absbaseurl+"admin.php?go=reply_addadminreply_"+cleanid+"' method='post' id='formadminreply"+cleanid+"'>";
inputcontent+=jslang[0]+"<br/><textarea cols='66' rows='3' name='adminreplycontent' id='adminreplycontent"+cleanid+"'></textarea><br/>";
inputcontent+="<input type='button' onclick=\"ajax_adminreply('"+cleanid+"'); return false;\" value='"+jslang[1]+"' class='button'/> <input type='reset' value='"+jslang[2]+"' class='button'/> <input type='button' value='"+jslang[3]+"' onclick=\"hideadminreply('"+divid+"');\" class='button'/></form>";
document.getElementById(divid).innerHTML=inputcontent;
document.getElementById(divid).style.display='block';
}
function showadminreplyformessage (divid) {
switchcomandmes='message';
var cleanid=divid.replace('com_', '');
var inputcontent="<form action='"+absbaseurl+"admin.php?go=message_addadminreply_"+cleanid+"' method='post' id='formadminreply"+cleanid+"'>";
inputcontent+=jslang[0]+"<br/><textarea cols='66' rows='3' name='adminreplycontent' id='adminreplycontent"+cleanid+"'></textarea><br/>";
inputcontent+="<input type='button' onclick=\"ajax_adminreply('"+cleanid+"'); return false;\" value='"+jslang[1]+"' class='button'/> <input type='reset' value='"+jslang[2]+"' class='button'/> <input type='button' value='"+jslang[3]+"' onclick=\"hideadminreply('"+divid+"');\" class='button'/></form>";
document.getElementById(divid).innerHTML=inputcontent;
document.getElementById(divid).style.display='block';
}
function hideadminreply (divid) {
document.getElementById(divid).innerHTML='';
document.getElementById(divid).style.display='none';
}
function showdelblog(blogid) {
var urldel=absbaseurl+"admin.php?go=entry_deleteblog_"+blogid+'';
if(confirm(jslang[4])){
window.location=urldel;
}
else {
return;
}
}
function comfirmurl(urldel) {
if(confirm(jslang[5])){
window.location=absbaseurl+urldel;
}
else {
return;
}
}
function showdeladminreply(repid) {
var urldel=absbaseurl+"admin.php?go=reply_deladminreply_"+repid+'';
if(confirm(jslang[6])){
if (shutajax==1) window.location=urldel;
else {
urldel+="&ajax=on";
currentcommentid=repid;
makeRequest(urldel, 'quickdeladminreply', 'GET', null);
}
}
else {
return;
}
}
function showdeladminreplyformessage(repid) {
var urldel=absbaseurl+"admin.php?go=message_deladminreply_"+repid+'';
if(confirm(jslang[7])){
if (shutajax==1) window.location=urldel;
else {
urldel+="&ajax=on";
currentcommentid=repid;
makeRequest(urldel, 'quickdeladminreply', 'GET', null);
}
}
else {
return;
}
}
function showdelreply(repid, blogid) {
var urldel=absbaseurl+"admin.php?go=reply_delreply_"+repid+'-'+blogid;
if(confirm(jslang[8])){
if (shutajax==1) window.location=urldel;
else {
urldel+="&ajax=on";
currentcommentid=repid;
makeRequest(urldel, 'quickdelreply', 'GET', null);
}
}
else {
return;
}
}
function showdelreplyformessage(repid) {
var urldel=absbaseurl+"admin.php?go=message_delreply_"+repid;
if(confirm(jslang[9])){
if (shutajax==1) window.location=urldel;
else {
urldel+="&ajax=on";
currentcommentid=repid;
makeRequest(urldel, 'quickdelreply', 'GET', null);
}
}
else {
return;
}
}
function showblockreply(repid, blogid) {
var urldel=absbaseurl+"admin.php?go=reply_block_"+repid+'-'+blogid;
if (shutajax==1) window.location=urldel;
else {
urldel+="&ajax=on";
currentcommentid=repid;
makeRequest(urldel, 'quickdelreply', 'GET', null);
}
}
function showblockmessage(repid) {
var urldel=absbaseurl+"admin.php?go=message_block_"+repid;
if (shutajax==1) window.location=urldel;
else {
urldel+="&ajax=on";
currentcommentid=repid;
makeRequest(urldel, 'quickdelreply', 'GET', null);
}
}
/* -- AJAX RELATED FUNCTIONS -- */
//Starring
function dostar(blogid) {
if (shutajax==0) {
gourl=absbaseurl+"admin.php?go=star&ajax=on&blogid="+blogid;
currentblogid=blogid;
currentstarid="starid"+blogid;
makeRequest(gourl, 'starblog', 'GET', null);
} else {
gourl=absbaseurl+"admin.php?go=star&ajax=off&blogid="+blogid;
window.location=gourl;
}
}
//Comment and Message
function ajax_submit (job) {
var stat_html = document.getElementById('stat_html').checked ? 1 : 0;
var stat_ubb = document.getElementById('stat_ubb').checked ? 1 : 0;
var stat_emot = document.getElementById('stat_emot').checked ? 1 : 0;
var stat_property = document.getElementById('stat_property').checked ? 1 : 0;
var v_replier = document.getElementById('v_replier').value+' ';
var v_repurl = document.getElementById('v_repurl').value;
var v_repemail = document.getElementById('v_repemail').value;
var v_content = document.getElementById('v_content').value+' ';
var v_password = document.getElementById('v_password').value;
var v_id = document.getElementById('v_id').value;
var v_reppsw = (document.getElementById('v_reppsw')) ? document.getElementById('v_reppsw').value : '';
var v_security_plus;
if (document.getElementById('v_security')) {
var v_security = document.getElementById('v_security').value;
if (v_security=='') {
alert(jslang[10]);
return false;
}
v_security_plus="&v_security="+v_security;
} else {
v_security_plus='';
}
if (v_replier=='' || v_content==''|| v_replier==' ' || v_content==' ' ) {
alert(jslang[11]);
return false;
}
document.getElementById('btnSubmit').value=jslang[12];
document.getElementById('btnSubmit').disabled='disabled';
if (shutajax==0) { //Currently for IE, Safari, Mozilla and Opera
v_replier = blogencode(v_replier);
v_repurl = blogencode(v_repurl);
v_repemail = blogencode(v_repemail);
v_content = blogencode(v_content);
v_password = blogencode(v_password);
v_id = blogencode(v_id);
v_reppsw = blogencode(v_reppsw);
var postData = "unuse=unuse&onetimecounter="+onetimecounter+"&v_id="+v_id+"&v_replier="+v_replier+"&v_password="+v_password+"&v_repurl="+v_repurl+"&v_repemail="+v_repemail+"&v_content="+v_content+"&stat_html="+stat_html+"&stat_ubb="+stat_ubb+"&stat_emot="+stat_emot+"&v_reppsw="+v_reppsw+"&stat_property="+stat_property+v_security_plus;
var gourl=absbaseurl+"visit.php?ajax=on&job="+job;
makeRequest(gourl, 'quickreply', 'POST', postData);
} else {
document.getElementById('visitorinput').submit();
}
}
//Ctrl+Enter key submitting (Textarea)
function ctrlenterkey (eventobject){
if(eventobject.ctrlKey && eventobject.keyCode==13) {
document.getElementById("btnSubmit").click();
}
}
//Admin reply
function ajax_adminreply (commentid) {
if (shutajax==0) {
var admid='adminreplycontent'+commentid;
var adminreplycontent = blogencode(document.getElementById(admid).value);
var postData = "unuse=unuse&adminreplycontent="+adminreplycontent;
var gourl=absbaseurl+"admin.php?ajax=on&go="+switchcomandmes+"_addadminreply_"+commentid;
currentcommentid=commentid;
makeRequest(gourl, 'quickadminreply', 'POST', postData);
} else {
var admid='formadminreply'+commentid;
document.getElementById(admid).submit();
}
}
function ajax_adminreply_edit (commentid, rptype) {
switchcomandmes=rptype;
ajax_adminreply(commentid);
}

function ajax_editcomment(repid, submitaction, onetimecounter) {
var admid='editcomcontent'+repid;
var v_content = blogencode(document.getElementById(admid).value);
var editjob=(submitaction=='reply') ? 'editreply' : 'editmessage';
var postData = "unuse=unuse&onetimecounter="+onetimecounter+"&v_content="+v_content;
var gourl=absbaseurl+"visit.php?ajax=on&go="+editjob+"&repid="+repid;
currentcommentid=repid;
makeRequest(gourl, 'quickeditcomment', 'POST', postData);
}

//encode string
function blogencode (str) {
str=encodeURIComponent(str);
if (is_moz) str=str.replace(/%0A/g, "%0D%0A"); //In IE, a new line is encoded as \r\n, while in Mozilla it's \n
return str;
}
//Avatar Selection
function changeavatar (slname, area) {
var current=document.getElementById(slname);
var realvalue=current.options[current.selectedIndex].value;
var areashow=document.getElementById(area);
if (areashow) {
if (realvalue!='' && realvalue!=null) {
areashow.innerHTML="<img src='images/avatars/"+realvalue+"' alt=''/>";
}
else {
areashow.innerHTML=jslang[13];
}
}
}
//Insert Emots
function insertemot (emotcode) {
var current=document.getElementById('v_content');
var emot="[emot]"+emotcode+"[/emot]";
if (current) {
if (current.value!='' && current.value!=null) {
current.value+=emot;
}
else {
current.value=emot;
}
document.getElementById('v_content').focus();
}
}
// Show/Hide Sidebar
function showHideSidebar(){
try{
var objSidebar=document.getElementById("sidebar");
var objContent=document.getElementById("content");
if(objSidebar.className!="sidebar-hide"){
objSidebar.className="sidebar-hide";
objSidebar.style.display="none";
objContent.className="content-wide";
setCookie('sidebaroff', 1,null, null, null, false);
}else{
objSidebar.className="sidebar";
objSidebar.style.display="block";
objContent.className="content";
setCookie('sidebaroff', 0,null, null, null, false);
}
}catch(e){}
}
function loadSidebar(){
try{
var objSidebar=document.getElementById("sidebar");
var objContent=document.getElementById("content");
var sidebaroff=getCookie ('sidebaroff');
if(sidebaroff==1){
objSidebar.className="sidebar-hide";
objSidebar.style.display="none";
objContent.className="content-wide";
}else{
objSidebar.className="sidebar";
objSidebar.style.display="block";
objContent.className="content";
}
}catch(e){}
}


//Media Link
function playmedia(strID,strType,strURL,intWidth,intHeight) {
var objDiv=document.getElementById(strID);
if (!objDiv) return false;
if (objDiv.style.display!='none') {
objDiv.innerHTML='';
objDiv.style.display='none';
} else {
objDiv.innerHTML=makemedia(strType,strURL,intWidth,intHeight,strID);
objDiv.style.display='block';
}
}
//Media Build
function makemedia (strType,strURL,intWidth,intHeight,strID) {
var strHtml;
switch(strType) {
case 'wmp':
strHtml="<object width='"+intWidth+"' height='"+intHeight+"' classid='CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6'><param name='url' value='"+strURL+"'/><embed width='"+intWidth+"' height='"+intHeight+"' type='application/x-mplayer2' src='"+strURL+"'></embed></object>";
break;
case 'swf':
strHtml="<object classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' width='"+intWidth+"' height='"+intHeight+"'><param name='movie' value='"+strURL+"'/><param name='quality' value='high' /><embed src='"+strURL+"' quality='high' type='application/x-shockwave-flash' width='"+intWidth+"' height='"+intHeight+"'></embed></object>";
break;
case 'flv':
var FU = {movie:"images/others/mediaplayer.swf",width:intWidth,height:+intHeight,majorversion:"8",build:"0",bgcolor:"#FFFFFF",allowfullscreen:"true",flashvars:"file="+strURL+"&fullscreenpage=images/others/fullscreen.html&fsreturnpage="+location.href};UFO.create(FU, strID);
break;
case 'real':
strHtml="<object classid='clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA' width='"+intWidth+"' height='"+intHeight+"'><param name='src' value='"+absbaseurl+"inc/realplay.php?link="+strURL+"' /><param name='controls' value='Imagewindow' /><param name='console' value='clip1' /><param name='autostart' value='true' /><embed src='"+absbaseurl+"inc/realplay.php?link="+strURL+"' type='audio/x-pn-realaudio-plugin' autostart='true' console='clip1' controls='Imagewindow' width='"+intWidth+"' height='"+intHeight+"'></embed></object><br/><object classid='clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA' width='"+intWidth+"' height='44'><param name='src' value='"+absbaseurl+"inc/realplay.php?link="+strURL+"' /><param name='controls' value='ControlPanel' /><param name='console' value='clip1' /><param name='autostart' value='true' /><embed src='"+absbaseurl+"inc/realplay.php?link="+strURL+"' type='audio/x-pn-realaudio-plugin' autostart='true' console='clip1' controls='ControlPanel' width='"+intWidth+"' height='44'></embed></object>";
break;
}
return strHtml;
}
//Font size control
function doZoom(size) {
document.getElementById('zoomtext').style.fontSize=size+'px';
}

//Cookie
function setCookie(name,value,expiry,path,domain,secure) {
var nameString = name + "=" + value;
var expiryString = (expiry == null) ? "" : " ;expires = "+ expiry.toGMTString();
var pathString = (path == null) ? "" : " ;path = "+ path;
var domainString = (path == null) ? "" : " ;domain = "+ domain;
var secureString = (secure) ?";secure" :"";
document.cookie = nameString + expiryString + pathString + domainString + secureString;
}
function getCookie (name) {
var CookieFound = false;
var start = 0;
var end = 0;
var CookieString = document.cookie;
var i = 0;
while (i <= CookieString.length) {
start = i ;
end = start + name.length;
if (CookieString.substring(start, end) == name){
CookieFound = true;
break;
}
i++;
}
if (CookieFound){
start = end + 1;
end = CookieString.indexOf(";",start);
if (end < start) end = CookieString.length;
return unescape(CookieString.substring(start, end));
}
return "";
}
function deleteCookie(name) {
var expires = new Date();
expires.setTime (expires.getTime() - 1);
setCookie( name , "Delete Cookie", expires,null,null,false);
}
function refreshsecuritycode(areaid, inputid) {
if (document.getElementById(areaid)) {
var rnds=Math.random();
document.getElementById(areaid).innerHTML="<img src='inc/securitycode.php?rand="+rnds+"' alt=''/>";
}
if (document.getElementById(inputid)) document.getElementById(inputid).value='';
}
function ajax_login () {
if (shutajax==0) {
var username = blogencode(document.getElementById('username').value);
var password = blogencode(document.getElementById('password').value);
var tmpSavecookie;
for (var i=1; i<=5; i++) {
tmpSavecookie='savecookie'+i;
if (document.getElementById(tmpSavecookie).checked) {
var savecookie = blogencode(document.getElementById(tmpSavecookie).value);
break;
}
}
var postData = "unuse=unuse&username="+username+"&password="+password+"&savecookie="+savecookie;
if (document.getElementById('securitycode')) postData+="&securitycode="+blogencode(document.getElementById('securitycode').value);
var gourl=absbaseurl+"login.php?ajax=on&job=ajaxverify";
makeRequest(gourl, 'quicklogin', 'POST', postData);
}
}
function quicklogout() {
setCookie ('userid','',null,null, null, false);
setCookie ('userpsw','',null,null, null, false);
}
function quickremember() {
var v_replier = blogencode(document.getElementById('v_replier').value);
var v_repurl = blogencode(document.getElementById('v_repurl').value);
var v_repemail = blogencode(document.getElementById('v_repemail').value);
var dateObjexp= new Date();
dateObjexp.setSeconds(3600*24*365);
if (document.getElementById('stat_rememberme').checked) {
setCookie ('rem_v_replier', v_replier, dateObjexp, null, null, false);
setCookie ('rem_v_repurl', v_repurl, dateObjexp, null, null, false);
setCookie ('rem_v_repemail', v_repemail, dateObjexp, null, null, false);
setCookie ('rem_v_rememberme', '1', dateObjexp, null, null, false);
} else {
setCookie ('rem_v_replier', '', dateObjexp, null, null, false);
setCookie ('rem_v_repurl', '', dateObjexp, null, null, false);
setCookie ('rem_v_repemail', '', dateObjexp, null, null, false);
setCookie ('rem_v_rememberme', '0', dateObjexp, null, null, false);
}
}
function decodetburl (str, ishidden, uniqueid) {
var resultstr='';
if (ishidden==1) { //Hidden!
var randomnumber1=Math.floor(Math.random()*10+1);
var randomnumber2=Math.floor(Math.random()*10+1);
resultstr="<span id=\"showtbq"+uniqueid+"\">"+jslang[66]+" <span id=\"qa"+uniqueid+"\">"+randomnumber1+"</span> <strong>+</strong> <span id=\"qb"+uniqueid+"\">"+randomnumber2+"</span> <strong>=</strong> <input type='text' id='ans"+uniqueid+"' maxlength='2' size='2'/> <input type='button' onclick='submithiddentbanswer(\""+uniqueid+"\");' value='"+jslang[1]+"'/><span id=\"answertb"+uniqueid+"\" style=\"display: none;\">"+str+"</span></span>";
}
else {
var codestr;
codestr=str.split('%');
var seed=codestr[0];
for (var i=1; i<codestr.length; i++) {
resultstr+=String.fromCharCode(codestr[i]-seed);
}
}
return resultstr;
}
function submithiddentbanswer(uniqueid) {
var randomnumber1=(document.getElementById("qa"+uniqueid)) ? parseInt(document.getElementById("qa"+uniqueid).innerHTML) : 0;
var randomnumber2=(document.getElementById("qb"+uniqueid)) ? parseInt(document.getElementById("qb"+uniqueid).innerHTML) : 0;
var anssubmited=(document.getElementById("ans"+uniqueid)) ? parseInt(document.getElementById("ans"+uniqueid).value) : 0;
if (randomnumber1+randomnumber2!=anssubmited) alert (jslang[67]);
else {
var resultstr=(document.getElementById("answertb"+uniqueid)) ? document.getElementById("answertb"+uniqueid).innerHTML : null;
resultstr=decodetburl (resultstr, 0, 0);
if (document.getElementById("showtbq"+uniqueid)) document.getElementById("showtbq"+uniqueid).innerHTML=resultstr;
}
}
function getprotectedblog (blogid, way) {
var blogpsw=blogencode(document.getElementById('entrypsw'+blogid).value);
currentblogid=blogid;
var postData = "unuse=unuse&job=getcontentonly&way="+way+"&blogid="+blogid+"&blogpsw="+blogpsw;
if (shutajax==0) {
var gourl=absbaseurl+"visit.php?ajax=on";
makeRequest(gourl, 'quickgetprotectedblog', 'POST', postData);
}
}
function promptreppsw () {
var pswproperty=document.getElementById('stat_property');
if (!pswproperty) return;
else if (pswproperty.checked) {
var pswtxt=prompt(jslang[69],'');
if (pswtxt==null || pswtxt=='') {
pswproperty.checked='';
return;
} else {
if (pswtxt.length>12) {
alert(jslang[70]);
promptreppsw();
}
document.getElementById('v_reppsw').value=pswtxt;
}
} else {
document.getElementById('v_reppsw').value='';
}
}
function getprotectedreply (repid, way, onetimecounter) {
var reppsw=blogencode(document.getElementById('reppsw'+repid).value);
currentcommentid=repid;
var postData = "unuse=unuse&job=getreplyonly&way="+way+"&reppsw="+reppsw+"&repid="+currentcommentid+"&onetimecounter"+onetimecounter;
if (shutajax==0) {
var gourl=absbaseurl+"visit.php?ajax=on";
makeRequest(gourl, 'quickeditcomment', 'POST', postData);
}
}