|
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//獲取對象
function getObject(objectId,top)
{
doc = top?window.top.document:document;
if(typeof(objectId)!="object" && typeof(objectId)!="function")
{
if(doc.getElementById && doc.getElementById(objectId))
{
// W3C DOM
return doc.getElementById(objectId);
}
else if(doc.getElementsByName(objectId))
{
return doc.getElementsByName(objectId)[0];
}
else if (doc.all && doc.all(objectId))
{
// MSIE 4 DOM
return doc.all(objectId);
}
else if (doc.layers && doc.layers[objectId])
{
// NN 4 DOM.. note: this won't find nested layers
return doc.layers[objectId];
}
else
{
return false;
}
}else
return objectId;
}
//獲取相對路徑
function getRelativePath()
{
var url = location.href;//當(dāng)前url
var urlcs = String(location.search);
url = url.replace(urlcs,"");
var path = url.length - url.replace(////g,"").length - 3; //層次為url包含/的長度-沒有包含/的長度再減去項(xiàng)目頭/的個(gè)數(shù)
var str = "";
for(var i = 0; i < path; i++)
{
str += "../";//組合成一個(gè)相對路徑的字符串返回
}
return str;
}
//加載其他JS文件或CSS文件
function loadjscssfile(filename,filetype,chkonce)
{
filetype = !filetype?"js":filetype;
var had = false;
if(filetype=="js")
{
if(chkonce)
{
var allScripts = document.getElementsByTagName("script");
for(var i=0;i<allScripts.length;i++)
{
try{
if(allScripts[i].src.indexOf(filename)>-1)
{
had = true;
break;
}
}catch(e){}
}
}
if(!had)
{
document.write("<script src=""+filename+"" src=""+filename+"" type='text/Javascript'></script>");
}
}else
{
if(chkonce)
{
var allCss = document.getElementsByTagName("link");
if(allCss.length)
{
for(var i=0;i<allCss.length;i++)
{
try{
if(allCss[i].href.indexOf(filename)>-1)
{
had = true;
break;
}
}catch(e){}
}
}
}
if(!had)
{
document.write("<link type='text/css' rel='stylesheet' href=""+filename+"" href=""+filename+"" />");
}
}
}
//定義根目錄路徑
var ROOT_PATH = getRelativePath();
var JS_PATH = ROOT_PATH+'js/';
var AJAX_PATH = ROOT_PATH+'ajax/';
var CSS_PATH = ROOT_PATH+'css/';
var IMAGES_PATH = ROOT_PATH+'images/';
var EDITOR_PATH = ROOT_PATH+'uploadeditor/';
var PUB_PATH = ROOT_PATH+'uploadfile/';
//加載公共變量的JS
loadjscssfile(JS_PATH+"globalPara.js");
//設(shè)置下拉表中某一項(xiàng)被選中
function setSelOption(objId,vlu)
{
objId = getObject(objId);
for(var i=0;i<objId.options.length;i++)
{
if(objId.options[i].value==vlu)
{
objId.options[i].setAttribute("selected","selected");
break;
}
}
}
//根據(jù)下拉表中的option文本設(shè)置某一項(xiàng)被選中
function setTxtOption(objId,txt)
{
objId = getObject(objId);
for(var i=0;i<objId.options.length;i++)
{
if(objId.options[i].innerHTML==txt)
{
objId.options[i].setAttribute("selected","selected");
break;
}
}
}
//設(shè)置單選按鈕組中某一項(xiàng)被選中
function setSelRadio(objName,vlu)
{
objName = document.getElementsByName(objName);
for(var i=0;i<objName.length;i++)
{
if(objName[i].value==vlu)
{
objName[i].setAttribute("checked","checked");
break;
}
}
}
//根據(jù)ID設(shè)置復(fù)選框中某些項(xiàng)被選中
//vlu 的格式為 ： 1,2,3
function setSelCheckbox(prefix,vlu)
{
var _arr = vlu.split(",");
if(_arr!="")
{
for(var i=0; i<_arr.length; i++)
{
getObject(prefix+_arr[i]).checked = true;
}
}
}
//快捷輸入，fromObj：來源對象，toObjId：目標(biāo)對象的ID，txt為true時(shí)取toObjId的innerHTML值
function fastInput(fromObj,toObjId,txt)
{
if(fromObj.value=='' || fromObj.value==0) return false;
txt = !txt ? false : txt;
var toObj = getObject(toObjId);
if(txt)
{
if(typeof (toObj.value) == 'undefined')
toObj.innerHTML = toTxt(fromObj.options[fromObj.selectedIndex].innerHTML);
else
toObj.value = toTxt(fromObj.options[fromObj.selectedIndex].innerHTML);
}else
{
if(typeof (toObj.value) == 'undefined')
toObj.innerHTML = fromObj.value;
else
toObj.value = fromObj.value;
}
}
/*
IE6,IE7上傳圖片前預(yù)覽圖片
IE6下還可以同時(shí)檢測圖片的大小
size 單位為KB
<style type="text/css"><!--
.newPreview
{
width:400px; height:300px;
FILTER: progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)
}
.nodis{display:none;}
--></style><style type="text/css" bogus="1">
.newPreview
{
width:400px; height:300px;
FILTER: progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)
}
.nodis{display:none;}</style>
<input type="file" name="litpic" onchange="PreviewImg(this,'newPreview','ndsPreview',400)" />
<div id="newPreview" class="newPreview"></div>
<img id="ndsPreview" class="nodis" />
*/
function PreviewImg(imgFile,newPreview,ndsPreview,size)
{
newPreview = getObject(newPreview);
if(!imgFile || !imgFile.value || !newPreview){return};
var patn = //.jpg$|/.jpeg$|/.gif$|/.png$|/.bmp$/i;
if(patn.test(imgFile.value))
{
try{newPreview.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgFile.value;}catch(e){}
if(navigator.appVersion.indexOf("MSIE 6.0",0)>-1)
{
size=!size?0:size;
ndsPreview = getObject(ndsPreview);
if(ndsPreview)
{
try{ndsPreview.attachEvent("onreadystatechange", function(){checkImgSize(ndsPreview,size)})}catch(e){}
ndsPreview.src = imgFile.value;
}
}
}
else
{
alert("您選擇的不是圖像文件,請重新選擇.");
}
}
function PreviewImgNow(imgDiv,imgFile)
{
try{getObject(imgDiv).filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgFile}catch(e){}
}
//上傳之前檢測圖片的大小
//條件是在file改變時(shí)要觸發(fā)函數(shù)將縮略圖顯示在img上
//size 單位為KB
function checkImgSize(img,size)
{
img = getObject(img);
if(img.readyState == "complete")
{
var limit = size * 1024;
if(img.fileSize > limit)
{
alert("出錯(cuò)！您上傳的圖片大小為"+(parseInt(img.fileSize/1024))+"KB,超過了"+size+"KB的限制，請重新上傳");
return false
}else
return true;
}
return true;
}
//檢測客戶端環(huán)境
function ClientMentInfo()
{
var me = this;
var appVer = navigator.userAgent;
this.GetBrowserName = function (){
if(appVer.indexOf("MSIE")>0) return "IE";
else if(appVer.indexOf("Firefox")>0) return "Firefox";
else if(appVer.indexOf("Chrome")>0) return "Chrome";
else if(appVer.indexOf("Safari")>0) return "Safari";
else if(appVer.indexOf("Camino")>0) return "Camino";
else if(appVer.indexOf("Konqueror")>0) return "Konqueror";
else return "其它";
}
this.GetOSInfo = function (){
var _pf = navigator.platform;
if(_pf == "Win32" || _pf == "Windows")
{
if(appVer.indexOf("Windows NT 6.0") > -1 || appVer.indexOf("Windows Vista") > -1)
{
return 'Windows Vista';
}else if(appVer.indexOf("Windows NT 6.1") > -1 || appVer.indexOf("Windows 7") > -1)
{
return 'Windows 7';
}else
{
try{
var _winName = Array('2000','XP','2003');
var _ntNum = appVer.match(/Windows NT 5./d/i).toString();
return 'Windows ' + _winName[_ntNum.replace(/Windows NT 5.(/d)/i,"$1")];
}catch(e){return 'Windows';}
}
}else if(_pf == "Mac68K" || _pf == "MacPPC" || _pf == "Macintosh")
{
return "Mac";
}else if(_pf == "X11")
{
return "Unix";
}else if(String(_pf).indexOf("Linux") > -1)
{
return "Linux";
}else
{
return "Unknow";
}
}
this.OS = me.GetOSInfo(); //操作系統(tǒng)類型
this.IeVer = null;
this.Bs_lang = (navigator.appName == 'NETscape'?navigator.language:navigator.browserLanguage);//瀏覽器語言版本
this.Bs_Name = me.GetBrowserName(); //瀏覽器名稱
//瀏覽器版本
if(this.Bs_Name=='IE')
{
var _msie = appVer.match(/MSIE /d./i).toString();
this.Bs_Version = this.IeVer = _msie.replace(/MSIE (/d)./i,"$1");
}else
{
this.Bs_Version = appVer;
}
this.Ie6 = this.IeVer==6 ? true: false;
this.Ie7 = this.IeVer==7 ? true: false;
this.Ie8 = this.IeVer==8 ? true: false;
}
//客戶端信息
var CMInfo = new ClientMentInfo();
//IE6 下緩存背景圖片
if(CMInfo.Ie6)
{
document.execCommand("BackgroundImageCache", false, true);
}
//設(shè)置復(fù)選框全選或全不選
function setAllCheckbox(formName,objName,num)
{
if(formName)
_arr = getObject(formName).elements[objName];
else
_arr = typeof(objName)=="object"?objName:document.all(objName);
if(_arr)
{
if(num)
{
if (!_arr.length ) // 只有一個(gè)復(fù)選框，則length = undefined
_arr.checked = true;
else
{
for(var i=0; i<_arr.length; i++)
{
_arr[i].checked = true;
}
}
}else
{
if (!_arr.length ) // 只有一個(gè)復(fù)選框，則length = undefined
_arr.checked = false;
else
{
for(var i=0; i<_arr.length; i++)
{
_arr[i].checked = false;
}
}
}
}
}
//使當(dāng)前頁面跳到指定的頁數(shù)頁面
function goPage(pageNum,pageStr)
{
window.location.href = "?np="+pageNum+pageStr;
}
//分別去字符串前后，左邊，右邊空格
String.prototype.trim = function(){ return this.replace(/^/s+|/s+$/g,"")}
String.prototype.ltrim = function(){ return this.replace(/^/s+/g,"")}
String.prototype.rtrim = function(){ return this.replace(//s+$/g,"")}
注意globalPara.js本作者常用到的一些每個(gè)站自己的常用變量和常量的文件，如果你不需要這樣的文件，可把
//加載公共變量的JS
loadjscssfile(JS_PATH+"globalPara.js");
這兩句刪掉，不然會報(bào)錯(cuò)。
（2009-06-04更新）
將 ClientMentInfo類改成了兼容IE6,IE7,IE8,Vista,Windows 7和Firefox
JavaScript技術(shù)：一些常用的JS功能函數(shù)(2009-06-04更新)，轉(zhuǎn)載需保留來源！
鄭重聲明：本文版權(quán)歸原作者所有，轉(zhuǎn)載文章僅為傳播更多信息之目的，如作者信息標(biāo)記有誤，請第一時(shí)間聯(lián)系我們修改或刪除，多謝。
