attach.js
var currFocus;
var ExistAttaInfo = new Array();
var oldDelAttas = new Array();
var attaIdx = 0;
var IsIE;
function fInitMSIE(){
if (navigator.userAgent.indexOf("MSIE") != -1){
IsIE = true;
}else{
IsIE = false;
}
}
fInitMSIE();
?
function fTrim(str){
str = str.replace(/(^\s*)/,"");
str = str.replace(/(\s*$)/,"");
return str;
}
//本js文件用于compose.htm同時發送多個附件的js函數，支持 IE 和 NNx 系列。
//所有的函數都適用于 IE 和 NNx 系列，直接調用就可以
//函數里面會根據語句判斷瀏覽器類型，然后依據不同的bowser屬性增加元素
//主要功能是動態創建 各種表單元素 和 刪除表單元素
//written by xpr
//??? function list
//??? -------------------------------------------------------------------------------------------------------------------
//??? IsIEBrowser()? 返回值: true(IE) false(NNx)
//??? exist(fileId)? 判斷fileId是否已經存在
//??? addInputFile(spanId,fileId)? 在名為spanId 的元素里面增加序號為index的input file
//??? addbr(spanId,brId)? 在名為spanId 的元素里面增加id為brId的換行符
//??? adddel(spanId,index) 在名為spanId 的元素里面增加序號為index的"刪除"按鈕，他可以刪除相應的input file 和 br
//??? addhidden(spanId,hiddenId,value)? 在名為spanId 的元素里面增加id為hiddenId，值為value的input type=hidden
//??? -------------------------------------------------------------------------------------------------------------------
var IsIE;
var attaIdx = 0;
//search,全局變量
//-----------------------------------------------------------------------------------------------------------
function IsIEBrowser() {
if (navigator.userAgent.indexOf("MSIE") != -1) {
return true;
} else {
return false;
}
}
// 增加附件函數 ()，增加到 idfilespan,基數為 attaIdx 。
function add() {
addfile("idfilespan",attaIdx);
attaIdx++;
return false;
}
//----------------------------------------fileexist()----------------------------------------------------------
//edited by alun
function exist(fileId) {
????? var file = document.getElementById(fileId);
? var result = false;
? if ( file !=null ) {
if ( file.value != null && file.value != "") {
result = existFile( file);
}//if
? }
? if( result)
? {
alert("這個附件您已經添加過了,新添加的附件將已被刪除");
//document.sendmail."+fileId+".value=""";
var attach_num = fileId.substring(10,12);
delfile("idfilespan",attach_num);
?
//--attaIdx;
//document.getElementById( "idAttachOper"+ attaIdx).click();
? }
}//end of function
//added by alun
function getfilename( attaName ) {
var s = attaName.lastIndexOf( '\\' );
return attaName.substr(s+1, attaName.length - s -1);
}
//added by alun
function existFile( file)
{
var form = document.sendmail;
for ( var i= 0 ; i < form.elements.length ; i ++ ) {???
if ( form.elements[i].type == "file" && form.elements[i].name != file.name ) {
if ( file.value == form.elements[i].value ) {
//alert(form.elements[i].value=null);
return true;
}
}
}//for
for (var i=0; i<ExistAttaInfo.length; i++) {
var theName = ExistAttaInfo[i];
if ( theName != null && theName != "" && theName == getfilename(file.name) ) {
return true;
}
}
return false;
}
//----------------------------------------addfile(spanId,index)----------------------------------------------
function addfile(spanId,index)
{
?????? var strIndex = "" + index;
??
?? var fileId = "attachfile"+ strIndex;
?? var brId = "idAttachBr" + strIndex;
?? addInputFile(spanId,fileId);
?? adddel(spanId,index);
?? addbr(spanId,brId);
?? //document.getElementById( "attachfile"+ strIndex).click();
?? return;
}
//-------------------------------------------sub fuction addInputFile-----------------------------------------
function addInputFile(spanId,fileId)
{
? var span = document.getElementById(spanId);
? if ( span !=null ) {
??????????????? if ( !IsIE ) {
var fileObj = document.createElement("input");
if ( fileObj != null ) {
fileObj.type="file";
fileObj.name = fileId;
fileObj.id = fileId;
fileObj.size="50";
var clickEvent = "exist('" + fileId + "')";
fileObj.setAttribute("onclick",clickEvent,0);?
span.appendChild(fileObj);
}//if fileObj
}// !IsIE
if ( IsIE ) {
var fileTag = "<input type='file'? id ='" + fileId + "' style='BORDER-RIGHT: #000000 1px solid; background-color: #FFFFFF; BORDER-TOP: #000000 1px solid; OVERFLOW: no; vertical-align: top;? BORDER-LEFT: #000000 1px solid; WIDTH: 90%; BORDER-BOTTOM: #000000 1px solid; HEIGHT: 20' size=50 name='" + fileId + "' size=50 onchange=exist('" + fileId + "')>";
var fileObj = document.createElement(fileTag);
span.appendChild(fileObj);
}//IsIE if
? }//if span
}
function addbr(spanId,brId)
{
? var span = document.getElementById(spanId);
? if ( span !=null ) {
var brObj = document.createElement("br");
if ( brObj !=null ) {
brObj.name = brId;
brObj.id = brId;
span.appendChild(brObj);
??????????? }//i2f
???? }//if
?return;
}
function adddel(spanId,index)
{
????? var strIndex = "" + index;
? var delId = "idAttachOper" + strIndex;
? var span = document.getElementById(spanId);
? if ( span != null ) {
var oTextNode = document.createElement("SPAN");
oTextNode.style.width = "5px";
span.appendChild(oTextNode);
??? if ( IsIE ) {
??????? var tag = "<input type='submit' style='BORDER-RIGHT: #000000 1px solid; BORDER-TOP: #000000 1px solid; OVERFLOW: no; BORDER-LEFT: #000000 1px solid;? BORDER-BOTTOM: #000000 1px solid; HEIGHT: 20' size=70 value='$subject'? id='" + delId + "' onclick=delfile('" + spanId + "',"+strIndex+")></input>";
var delObj = document.createElement(tag);
if ( delObj != null ) {
span.appendChild(delObj);
}//if
}// Is IE
??????? if ( !IsIE ) {
var delObj = document.createElement("input");
if ( delObj != null ) {
delObj.name = delId;
delObj.id = delId;
delObj.type = "button";
var clickEvent = "return delfile('" + spanId + "',"+strIndex+");";
delObj.setAttribute("onclick",clickEvent);?
span.appendChild(delObj);
}//if
}// !IsIE if
if( delObj != null) delObj.value = "刪 除";
}//main if
return;
}
//-------------------------------------------------------------------------------------------------------------
//---------------------------------------------delete input file-----------------------------------------------
function delfile(spanId,index)
{
?? var strIndex = "" + index;
?? var fileId = "attachfile"+ strIndex;
?? var brId = "idAttachBr" + strIndex;
?? var delId = "idAttachOper" + strIndex;
?? //first,get the element
?????? var span = document.getElementById(spanId);
?? //alert(? "del span: " + span? );
?? if ( span == null ) return false;
?? var fileObj = document.getElementById(fileId);
?? if ( fileObj == null ) return false;
?? var brObj = document.getElementById(brId);
?? if ( brObj ==null ) return false;
?? var delObj = document.getElementById(delId );
?? //alert(? "del delId: " + delObj? );
?? if ( delObj == null ) return false;
?????? //second,create the replace element
?? var temp= document.createElement("SPAN");
?? //third,replace it
??? span.replaceChild(temp,fileObj);
span.replaceChild(temp,brObj);
// Added by Harry, Repair Remove attached bug 2005/04/04
span.removeChild(delObj.previousSibling);
var attach = document.getElementById("attach");
if(span.getElementsByTagName("INPUT").length == 1) attach.childNodes[0].nodeValue='添加附件';
// End
span.replaceChild(temp,delObj);
return false;
}
頁面上用
<form name=sendmail>
<SCRIPT src="attach.js"></SCRIPT>
<A id=attach? onclick="add();this.childNodes[0].nodeValue='繼續添加附件';"? href="javascript:;" name=attach>添加附件</A><SPAN? id=idfilespan></SPAN>
</form>