How to dynamically add and delete tabs using javascript_javascript skills-JS Tutorial-php.cn

The example in this article describes the method of dynamically adding and deleting tabs tags in javascript. Share it with everyone for your reference. The specific implementation method is as follows:
<html>
<HEAD>
<TITLE>网页对话</TITLE>
<LINK href="style.css" type=text/css rel=stylesheet>
<script>
function $(obj)
{
 var o = typeof(obj)=="object" &#63; obj : document.getElementById(obj);
 return o;
}
function addChannel(ChannelId,LabelText){
 var ChatBoardId="ChatBoard__"+ChannelId;
 var LabelId="Label__"+ChannelId;
 /* 如果频道已存在 **/if($(ChatBoardId)){
 return ;bai
 };
 /* 添加控件,先删除原来 '等待客户连接' 这列 **/
 var cell0=$("LabelContainer").childNodes[0];
 if(cell0.id=='Label_Default')$("LabelContainer").removeChild(cell0);
 $("ChatBoardContainer").appendChild(buildChatBoard(ChatBoardId));
 $("LabelContainer").appendChild(buildLabel(LabelId,LabelText));
 /* 显示新打开的聊天窗口 **/toggChatBoard(ChannelId);
};
function buildChatBoard(boardId){
 var div=document.createElement("DIV");
 div.id=boardId;
 div.style.width="100%";
 div.style.height='258px';
 /* div.style.border = '1px solid #ff0000'; **/
 div.style.overflowY="scroll";
 div.style.padding="3";
 return div;
};
function buildLabel(LabelId,LabelText){
 var label=document.createElement("TD");
 label.id=LabelId;
 label.noWrap=true;
 /* label.width = LabelText.length * 12 + 30; /* +20是为了岂有此留位置给关闭按钮 **/
 label.height=22;
 label.name=LabelText;
 label.title="点击这里切换交谈对象";
 label.innerHTML=LabelText;
 var lid=LabelId.substr(LabelId.indexOf("__")+2);
 label.innerHTML+=" <SPAN title='关闭' style='FONT-WEIGHT: bold; FONT-SIZE: 12px;FONT-FAMILY: marlett; CURSOR: hand; COLOR: #555555; MARGIN-RIGHT: 4px' onclick=/"removeChatBoard('"+lid+"')/" onmouseout='this.style.color=/"#ffffff/"' onmouseover='this.style.color=/"#ffff00/"'>r</SPAN>";
 label.style.cursor="hand";
 /* label.style.border = "1px solid #CC99FF"; **/
 label.style.textAlign="center";
 label.style.padding="2";
 label.style.backgroundImage="url(Images/title2.gif)";
 label.onclick=function (){
 var id=event.srcElement.id;
 id=id.split("__")[1];
 if(event.srcElement.tagName=='SPAN')return ;
 toggChatBoard(id);
 };
 label.onmouseover=function (){
 event.srcElement.oldbg=event.srcElement.style.backgroundImage;
 event.srcElement.style.backgroundImage="url(Images/title2_on_green.jpg)";
 };
 label.onmouseout=function (){
 event.srcElement.style.backgroundImage=event.srcElement.oldbg;
 };
 return label;
};
function toggChatBoard(id){
 var boards=$("ChatBoardContainer");
 for(i=0;i<boards.childNodes.length;i++){
 if(boards.childNodes[i].id.indexOf(id)>-1){
  boards.childNodes[i].style.display='';
  boards.childNodes[i].innerHTML=id;
 }else {
  boards.childNodes[i].style.display='none';
 };
 };
 /* 标签栏 **/var labels=$("LabelContainer");
 for(i=0;i<labels.childNodes.length;i++){
 if(labels.childNodes[i].id.indexOf(id)>-1){
  labels.childNodes[i].oldbg=labels.childNodes[i].style.backgroundImage;
  labels.childNodes[i].style.backgroundImage="url(Images/title2_on_green.jpg)"; 
  var id=labels.childNodes[i].id;
  id=id.substr(id.indexOf("__")+2);
  var name=labels.childNodes[i].name; 
 }else {
  labels.childNodes[i].style.backgroundImage="url(Images/title2.gif)";
 };
 };
};
function removeChatBoard(id){
 var arChannel=$("ChatBoardContainer").childNodes;
 for(i=0;i<arChannel.length;i++){
 /* alert(arChannel[i].id + "," + id); */if(arChannel[i].id.indexOf(id)>-1){
  $("ChatBoardContainer").removeChild(arChannel[i]);
 };
 };
 /* 标签栏 **/var arLabel=$("LabelContainer").childNodes;
 for(i=0;i<arLabel.length;i++){
 /* alert(arLabel[i].id + "," + id); */if(arLabel[i].id.indexOf(id)>-1){
  $("LabelContainer").removeChild(arLabel[i]);
 };
 };
 if($("ChatBoardContainer").childNodes.length<1){
 var td=document.createElement("TD");
 td.innerText="等待客户连接..";
 td.align="center";
 td.id='Label_Default';
 $("LabelContainer").appendChild(td);
 return ;
 };
 var newid=arChannel[0].id;
 newid=newid.split("__")[1];
 toggChatBoard(newid);
};
function scrollLable(action){
 if(action==-1){
 clearInterval(scrollLableTimer);
 return ;
 };
 scrollLableTimer=setInterval("doScrollLable("+action+")",30);
};
function doScrollLable(action){
 var divLabelContainer=$('divLabelContainer');
 if(action==1){
 if(divLabelContainer.scrollLeft<0){
  clearInterval(scrollLableTimer);
  divLabelContainer.scrollLeft=0;
  return ;
 };
 divLabelContainer.scrollLeft-=10;
 };
 if(action==2){
 if(divLabelContainer.scrollLeft>$('tbLabelContainer').clientWidth){
  clearInterval(scrollLableTimer);
  divLabelContainer.scrollLeft=$('tbLabelContainer').clientWidth;
  return ;
 };
 divLabelContainer.scrollLeft+=10;
 };
};
</script>
<STYLE type=text/css>
 .imgbtn{ border:1px solid #ffffff;cursor:hand;}
 .imgbtn_on{ border:1px solid #9326FF;}
 a.toolButton{
 color:#375FB9!important;
 padding:0px;
 border:1px solid #B1D6F3;
 text-align:center;
 height:16px;
 width:16px;
 }
 a.toolButton:hover{
 background:#BADBEF;
 border:1px solid #144985;
 }
</STYLE>
</HEAD>
<body>
<a href="javascript:void(0)" onClick="addChannel('ceshi','ceshi')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test1','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test2','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test3','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test4','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test5','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test6','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test7','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test8','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test9','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test10','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test11','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test12','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test13','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test14','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test15','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test16','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test17','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test18','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test19','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test20','test')">add tabs</a>
<a href="javascript:void(0)" onClick="addChannel('test21','test')">add tabs</a>
<TABLE cellSpacing=0 cellPadding=0 width="100%" border=0>
<TBODY>
<TR>
<TD id=ChatBoardTitle style="COLOR: #555555" background=Images/title2.gif height=27>
<TABLE style="TABLE-LAYOUT: fixed" cellSpacing=0 cellPadding=0 width="100%" border=0>
<TBODY>
<TR>
<TD>
<DIV id=divLabelContainer style="OVERFLOW-X: hidden; WIDTH: 100%">
<TABLE id=tbLabelContainer height=27 cellSpacing=1 cellPadding=3 border=0>
<TBODY>
<TR id=LabelContainer>
<TD id=Label_Default noWrap align=middle>等待客户连接...</TD></TR></TBODY></TABLE></DIV></TD>
<TD width=30><SPAN onmouseup=scrollLable(-1) onmousedown=scrollLable(1) onMouseOver="this.style.color='red'" style="CURSOR: hand; FONT-FAMILY: webdings" onMouseOut="this.style.color=''">7</SPAN><SPAN onmouseup=scrollLable(-1) onmousedown=scrollLable(2) onMouseOver="this.style.color='red'" style="CURSOR: hand; FONT-FAMILY: webdings" onMouseOut="this.style.color=''">8</SPAN></TD></TR></TBODY></TABLE></TD></TR>
<TR><!-- ChatBoardContainer 内不能放任何内容，否则脚本会出错 --><!--<div id="ChatBoard" style="padding:3px; overflow-y: scroll; width: 100%; height: 258px"></div>-->
<TD id=ChatBoardContainer style="HEIGHT: 258px" vAlign=top></TD></TR></TBODY></TABLE>
</body>
</html>
Copy after login
The picture used title2_on_green.jpg
title2.gif
I hope this article will be helpful to everyone’s JavaScript programming design.