JavaScript/DHTML代码
1.删除一元素,如button,等表单元素.一种根据index,一种根据id
<HEAD>
<SCRIPT>
function removeElementById()
{
var oChild=form1.children('txt1');
if (oChild != null)
{
form1.removeChild(oChild);
}
}
function removeElementByIndex()
{
var oChild=form1.children(0);
if (oChild != null)
{
form1.removeChild(oChild);
}
}
</SCRIPT>
</HEAD>
<BODY>
<FORM METHOD=POST ACTION="" id="form1" id="form1">
<input type="text" value="aa" id="txt1"/>
<input type="button" οnclick="removeElementByIndex()" value="删除Byindex"/>
<input type="button" οnclick="removeElementById()" value="删除ByID"/>
</FORM>
</BODY>
2.循环显示数组的内容,各组显示的时间长度可以设置(以秒为单位) 2005-09-13
方法一
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<BODY>
<div id="div1" ></div>
<div id="div2" ></div>
<script>
var array1 = new Array();
array1[0] = new Array();
array1[1] = new Array();
array1[2] = new Array();
array1[0][0] = "内容1";
array1[0][1] = "背景音乐1";
array1[0][2] = 1000;//持续时间
array1[1][0] = "内容2";
array1[1][1] = "背景音乐2";
array1[1][2] = 2000;//持续时间
array1[2][0] = "内容3";
array1[2][1] = "背景音乐3";
array1[2][2] = 3000;//持续时间
setTimeout("show(0)",0);//这里的0是用来设置第一一运行的延时.
function show(index)
{
var tempIndex,tempTime; //tempIndex是当前一级数组的下标;tempTime是当前一级数组要持续的时间.
if (index == array1.length) //3是一级数组个数.
{
index = -1;//因为这是一级数组最后一个,进行下一个一级数组的循环是下标应为0,但下面index++的,所以现在置为-1;
tempTime =0;//一级数组循环完毕后进入第二次循环时候的延时.
tempIndex =array1.length-1 //2是一级数组的倒数第二个数组.
}
else
{
tempTime = array1[index][2];
tempIndex = index;
}
div1.innerHTML = array1[tempIndex][0];
div2.innerHTML = array1[tempIndex][1];
index++;
//alert(index+"AA"+tempTime);
setTimeout("show("+index+")",tempTime);
}
</script>
</BODY>
</HTML>
----------------------------------------------------------------------------------------------------------------------
方法二(笨笨)
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<BODY onLoad="loadshow();">
<div id="div1" ></div>
<div id="div2" ></div>
<script>
var array1 = new Array();
array1[0] = new Array();
array1[1] = new Array();
array1[2] = new Array();
array1[0][0] = "内容1";
array1[0][1] = "背景音乐1";
array1[0][2] = 1000;//持续时间
array1[1][0] = "内容2";
array1[1][1] = "背景音乐2";
array1[1][2] = 1000;//持续时间
array1[2][0] = "内容3";
array1[2][1] = "背景音乐3";
array1[2][2] = 1000;//持续时间
function loadshow()
{
setTimeout("show(0)",0);
}
function show(index)
{
div1.innerHTML = array1[index][0];
div2.innerHTML = array1[index][1];
index++;
if (index >= 3)
{
setTimeout("loadshow()",array1[2][2]);
}
else
{
setTimeout("show("+index+")",array1[index-1][2]);
}
}
</script>
</BODY>
</HTML>
-------------------------------------------------------------------------------------------------
资料收集,如此弹出窗口,form提交.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<SCRIPT LANGUAGE="JavaScript">
<!--
var previewWindow;
function doPreview(){
if(previewWindow == null){
previewWindow = window.open("","Preview","width=160,height=480,scrollbars=yes");
}else if(previewWindow.closed == true){
previewWindow = window.open("","Preview","width=160,height=480,scrollbars=yes");
}
var doc = document.myForm;
doc.target = previewWindow.name;
doc.action = "Noname4.html";
doc.submit();
previewWindow.focus();
}
//-->
</SCRIPT>
</HEAD>
<FORM METHOD=POST ACTION="" name ="myForm">
<input type="button" οnclick="doPreview()" value= "preview">
</FORM>
<BODY>
</BODY>
</HTML>
display:none/block 不拉屎不占茅坑.
visibility:hidden/visible 拉不拉屎都占着茅坑
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<BODY>
<SELECT NAME="select1" id="select1" οnchange="doChange()">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</SELECT>
<div id ="div1" style ="visibility:hidden"><p align="center">一、合同变更<BR></div>
<div id ="div2" style ="visibility:hidden"><p align="center">二、费用变更</p></div>
<div id ="div3" style ="visibility:hidden"><p align="center">三、其它变更</p></div>
<script>
function doChange()
{
var sel = select1.options[select1.selectedIndex].value
if (sel == "1")
{
div1.style.visibility = "visible";
div2.style.visibility = "hidden";
div3.style.visibility = "hidden";
}
else if (sel =="2")
{
div1.style.visibility = "hidden";
div2.style.visibility = "visible";
div3.style.visibility = "hidden";
}
else
{
div1.style.visibility = "hidden";
div2.style.visibility = "hidden";
div3.style.visibility = "visible";
}
}
doChange();
</script>
</BODY>
</HTML>
客户端实现剪贴板功能 2005-09-17
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<SCRIPT LANGUAGE="JavaScript">
<!--
function JM_cc(ob)
{
var obj=MM_findObj(ob);
if (obj)
{
obj.select();js=obj.createTextRange();js.execCommand("Copy");}
alert('复制成功,粘贴发给你好友一起听,谢谢!');
}
function MM_findObj(n, d) { //v4.0
var p,i,x;
if(!d) d=document;
if((p=n.indexOf("?"))>0&&parent.frames.length)
{
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);
}
if(!(x=d[n])&&d.all) x=d.all[n];
for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
if(!x && document.getElementById) x=document.getElementById(n); return x;
}
//-->
</SCRIPT>
</HEAD>
<BODY>
<span class="style1"><strong>本专辑地址</strong></span> <input name="textarea1" type="text" style="background-color:#F8F0DC" value="http://www.5c5t.com/MusicList/beed13602b9b0e6ecb5b568ff5058f077ting.htm? 崔健的专辑《新长征路上的摇滚 》,来听听,不错。"
size="30" maxlength="100">
<input type="button" name="Button" value="点此复制给好友"style="background-color:#FFCC66" onClick=JM_cc('textarea1')>
</BODY>
</HTML>
上传前客户端判断图片宽和高 2005-09-18更新
<html>
<head>
<title></title>
<script language="javascript">
<!--
function go()
{
alert("宽度为:"+mp.clientWidth+"高度为:"+mp.clientHeight)
}
//-->
</script>
</head>
<body>
<div STYLE="width: 1px; height: 1px; overflow: hidden;">
<img id="mp" style="visibility:visible;" >
</div>
<input type="file" id="file1" οnblur="mp.src=this.value">
<input type="button" οnclick="go()" value="picSize">
</body>
</html>
原来的有个问题,宽度很大的图片反复测试的时候不准确,好象有个延时问题。已经修改了。再不`行这:
<input type="button" οnclick="setTimeout('go()',1000);" value="picSize">
<tr οnmοuseοver="????????">
<td><img src="data:images/red.gif" width="3" height="3"></td>
<td>asdfasdf</td>
</tr>
如上,该怎么写才能实现鼠标移到这行时改变第一个<td>里的图片,(收集)
<tr οnmοuseοver="this.children[0].children[0].src='aaa.gif';">
下拉列表获得焦点的时候自动展开它 2005-10-27
http://www.51js.com/viewthread.php?tid=28253
有一个不好的地方就是需要服务器允许创建对象,拿回自己本机测试吧。
<SELECT id=cboSort οnfοcus="demo()">
<OPTION value=None selected>None</OPTION>
<OPTION value=col1>序号</OPTION>
<OPTION value=col2>抄表册</OPTION>
<OPTION value=col3>抄表册名称</OPTION>
<OPTION value=col4>抄表册性质</OPTION>
<OPTION value=col5>抄表周期</OPTION>
<OPTION value=col6>管理部门</OPTION>
<OPTION value=col7>变压器组号</OPTION>
<OPTION value=col8>变压器性质</OPTION>
<OPTION value=col9>抄表员代码</OPTION>
<OPTION value=col10>抄表员姓名</OPTION>
<OPTION value=col11>抄表列日</OPTION>
<OPTION value=col12>浮动天数</OPTION>
<OPTION value=col13>初始化标志</OPTION>
<OPTION value=col14>缴费天数</OPTION>
<OPTION value=col15>抄表方式</OPTION>
</SELECT>
<script>
function demo(){
cboSort.focus();
var WshShell = new ActiveXObject("Wscript.Shell");
try{
WshShell.SendKeys("%{DOWN}");
}
catch(e){}
WshShell.Quit;
}
</script>
客户端建立文件
<html>
<head>
<script language='javascript'>
function aa()
{
var fso, tf;
fso = new ActiveXObject("Scripting.FileSystemObject");
tf = fso.CreateTextFile("c:\\testfile.txt", true);
tf.WriteLine("Testing 1, 2, 3.") ;
tf.WriteBlankLines(3) ;
tf.Write ("This is a test.");
tf.Close();
}
</script>
</head>
<body>
<form>
<input type=button value='aa' οnclick=aa() />
</form>
</body>
</html>
客户端获得CheckBox的值
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<SCRIPT LANGUAGE="JavaScript">
<!--
//通过getElementByTag
function getCbxByTag()
{
var cbx = document.getElementsByTagName("input");
var cbxValue="";
for(var i=0;i<cbx.length;i++)
{
if(cbx[i].type =="checkbox")
{
if (cbx[i].checked)
{
if (cbxValue.length>0)
{
cbxValue += ","+cbx[i].value;
}
else
{
cbxValue = cbx[i].value ;
}
}
}
}
alert(cbxValue);
return false;
}
//通过getElementsByName
function getCbxByName()
{
var cbx = document.getElementsByName("ff");
var cbxValue="";
for(var i=0;i<cbx.length;i++)
{
if (cbx[i].checked)
{
if (cbxValue.length>0)
{
cbxValue += ","+cbx[i].value;
}
else
{
cbxValue = cbx[i].value ;
}
}
}
alert(cbxValue);
return false;
}
//使用了数组的getElementsByName
function mm()
{
var a = document.getElementsByName("ff");
var s = [];
for(var i=0; i<a.length; i++)
{
if(a[i].type=="checkbox" && a[i].checked)
{
s[s.length] = a[i].value;
}
}
alert(s);
}
//-->
</SCRIPT>
<BODY>
<form name="form" id="form" method="post" οnsubmit="JavaScript:return getCbxByTag();">
<input name="ff" type="checkbox" id="ff1" value="1">1
<input name="ff" type="checkbox" id="ff2" value="2">2
<input name="ff" type="checkbox" id="ff3" value="3">3
<input name="ff" type="checkbox" id="ff4" value="4">4
<input type="submit" name="Submit" value="提交">
<input type="button" name="buttun2" value="提交2" οnclick="return getCbxByName()">
<input type="button" name="buttun2" value="提交3" οnclick="mm()">
</form>
</BODY>
</HTML>
获得ChexBox 的Text
//通过getElementByTag
function getCbxByTag()
{
var cbx = document.getElementsByTagName("input");
var cbxValue="";
var cbxText = "";
for(var i=0;i<cbx.length;i++)
{
if(cbx[i].type =="checkbox")
{
if (cbx[i].checked)
{
if (cbxValue.length>0)
{
cbxValue += ","+cbx[i].value;
cbxText += "," +cbx[i].nextSibling.innerText;
}
else
{
cbxValue = cbx[i].value ;
cbxText = cbx[i].nextSibling.innerText;
}
}
}
}
alert(cbxValue);
alert(cbxText);
return false;
}
CSS样式里使用JavaScript(onmouseover/onmouseout) 2005-11-05
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> CSS样式里使用JavaScript(onmouseover/onmouseout)2</TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<style type="text/css">
table
{
border:1 blue ;
background-color:red;
cursor:hand;
}
TR
{
onmouseover: expression(οnmοuseοver=function (){this.style.color='blue';this.style.bgcolor='yellow'});
onmouseout: expression(οnmοuseοut=function (){this.style.color='';this.style.bgcolor=''});
}
td
{
background-color:#ffffff;
}
</style>
</HEAD>
<BODY>
<TABLE >
<TR >
<TD >风儿吹散了蒲公英...... </TD>
<TD>风儿吹散了蒲公英...... </TD>
<TD>风儿吹散了蒲公英...... </TD>
</TR>
<TR >
<TD >风儿吹散了蒲公英...... </TD>
<TD>风儿吹散了蒲公英...... </TD>
<TD>风儿吹散了蒲公英...... </TD>
</TR>
</TABLE>
</BODY>
</HTML>
getElementsByTagName获得所有CheckBox值.加了一个属性value
{
varcbxs=document.getElementsByTagName("input");
varstrValue="";
for(vari=0;i<cbxs.length;i++)
{
if(cbxs[i].type=="checkbox"&&cbxs[i].checked==true)
{
if(strValue.length==0)
{
strValue=cbxs[i].value;
}else{
strValue+=","+cbxs[i].value;
} } } alert(strValue);
}//--></SCRIPT><INPUTTYPE="checkbox"NAME="cbx1"value="1"><INPUTTYPE="checkbox"NAME="cbx1"value="2"><INPUTTYPE="checkbox"NAME="cbx1"value="3"><INPUTTYPE="checkbox"NAME="cbx1"value="4"><INPUTTYPE="button"NAME="btnOk"value="获得CheckBoxValue"onclick="getCheckBoxValue()">
javascript实现网页对联广告
http://maxie.cnblogs.com/archive/2005/12/22/302475.html
document.all.AdLayer1.style.posTop = -200;
document.all.AdLayer1.style.visibility = 'visible'
document.all.AdLayer2.style.posTop = -200;
document.all.AdLayer2.style.visibility = 'visible'
MoveLeftLayer('AdLayer1');
MoveRightLayer('AdLayer2');
}
function MoveLeftLayer(layerName) {
var x = 5;
var y = 100;
var diff = (document.body.scrollTop + y - document.all.AdLayer1.style.posTop)*.40;
var y = document.body.scrollTop + y - diff;
eval("document.all." + layerName + ".style.posTop = y");
eval("document.all." + layerName + ".style.posLeft = x");
setTimeout("MoveLeftLayer('AdLayer1');", 20);
}
function MoveRightLayer(layerName) {
var x = 5;
var y = 100;
var diff = (document.body.scrollTop + y - document.all.AdLayer2.style.posTop)*.40;
var y = document.body.scrollTop + y - diff;
eval("document.all." + layerName + ".style.posTop = y");
eval("document.all." + layerName + ".style.posRight = x");
setTimeout("MoveRightLayer('AdLayer2');", 20);
}
document.write("<divid=AdLayer1style='position:absolute;visibility:hidden;z-index:1'><EMBEDsrc='http://ad4.sina.com.cn/200512/21/41477_58550news_guonei_ditong_1222.swf'quality=highWIDTH=100HEIGHT=280TYPE='application/x-shockwave-flash'id=EccoolAd></EMBED></div>"
+"<divid=AdLayer2style='position:absolute;visibility:hidden;z-index:1'><EMBEDsrc='http://ad4.sina.com.cn/200512/21/41477_58550news_guonei_ditong_1222.swf'quality=highWIDTH=100HEIGHT=280TYPE='application/x-shockwave-flash'id=EccoolAd></EMBED></div>");
initEcAd()
页面正在价载.....
http://www.iconcc.net/d/lbs/article.asp?id=422
----------------------------------------------*/#loader_container{}{ text-align:center; position:absolute; top:60%; width:100%; left:0;}
#loader{}{ font-family:Tahoma, Helvetica, sans; font-size:11.5px; color:#abc; background-color:#000; padding:10px 0 16px 0; margin:0 auto; display:block; width:130px; border:1px solid #abc; text-align:left; z-index:2;}#loader_bg{}{background-color:#abc; position:relative; top:8px; left:8px; height:7px; width:113px; font-size:1px}#progress{}{ height:5px; font-size:1px; width:1px; position:relative; top:1px; left:0px; background-color:#fff;}</style><scripttype="text/javascript">vart_id=setInterval(animate,20);
varpos=0;
vardir=2;
varlen=0;
functionanimate()
{
varelem=document.getElementById('progress');
if(elem!=null){
if(pos==0) len+=dir;
if(len>32||pos>79) pos+=dir;
if(pos>79) len-=dir;
if(pos>79&&len==0) pos=0;
elem.style.left=pos;
elem.style.width=len;
}}functionremove_loading(){
this.clearInterval(t_id);
vartargelem=document.getElementById('loader_container');
targelem.style.display='none';
targelem.style.visibility='hidden';
}</script></head><bodyonLoad="remove_loading();"><divid="loader_container"onclick="this.style.display='none'"title="点击关闭"><divid="loader"><divalign="center">网页正在载入中 </div><divid="loader_bg"><divid="progress"></div></div></div></div><p>在Flickr找的</p><imgsrc="http://static.flickr.com/25/57001474_6d174fdce4_o_d.jpg"/><imgsrc="http://static.flickr.com/30/51733738_9f0ff4ca38_b_d.jpg"/></body></html>
定义方法的方式
//去掉左右空格
String.prototype.trim = function()
{
return this.replace(/(^\s*)|(\s*$)/g, "");
}
//去掉左空格
String.prototype.ltrim = function()
{
return this.replace(/(^\s*)/g, "");
}
//去掉左右空格
String.prototype.rtrim = function()
{
return this.replace(/(\s*$)/g, "");
}
//使用方法:
var returntxt =" 你好 我 好 ";
alert(returntxt);
alert(returntxt.ltrim());
alert(returntxt.rtrim());
alert(returntxt.trim());
重载(OverLoad)和覆盖(Override)
“参数必须不同”是指参数的个数或者类型不相同,和参数顺序无关。
http://www.cnblogs.com/Terrylee/archive/2006/03/09/346128.html
使用 this 指针和 prototype 实现 js 的 OO 时的一个区别 2006-04-26
利用 this 实现的公共方法中可以访问类的私有成员(用 var 声明的变量),私有方法(用 function 直接定义的方法);
利用原型扩展实现的方法中,无法调用私有成员和变量。
例子如下所示(把其中注释掉的两行恢复就可以看到区别):
functionT(name) {
this.Name=name;
varx=5;
functionprivateFunc() {
alert('inprivate method:dosometheing');
}
this.PublicFunc=function() {
//可以调用私有方法,访问私有成员变量。 privateFunc();
alert('x='+x);
alert('inpublic method:dosomethingelse.');
}
}
//var t = new T('t1'); //t.PublicFunc(); T.prototype.PublicFunc2=function() {
alert('inpublic method2.');
//下面两行都会出错。在利用 prototype 扩展的方法里无法调用对象的私有方法,也访问不到通过 var 定义的私有成员。 //alert(x); //privateFunc(); }
vart2=newT('t2');
t2.PublicFunc();
t2.PublicFunc2();
我知道了,在html中加上下面语句
function clickbutton()
{
if(event.keyCode==13)
{
window.document.all.Button1.click(); //将Button1改为相应的Button就行了
}
}
</script>
</HEAD>
<body MS_POSITIONING="GridLayout" οnkeydοwn="if(event.keyCode==13) return false;">
谢谢各位的响应!
去掉左右空格设置SELECT的选项目.
<script language ="javascript">
function SetAllWorkType(Value)
{
var cbx = document.getElementsByTagName("select");
//var cbx = document.all.select;
Value.trim();
// alert(Value.length + Value);
if(Value == "-1") return;
for(var i=0;i<cbx.length;i++)
{
if(cbx[i].id !="DdlWork" && cbx[i].id !="DdlACCOUNTABILITY"
&& cbx[i].id !="DdlABILITY"&& cbx[i].id !="DdlTEAMWORK"&& cbx[i].id !="DdlQUALITY"
&& cbx[i].id !="DdlSATISFACTION" )
{
cbx[i].value = Value;
}
}
}
String.prototype.trim = function() {
return this.replace(/(^\s*)|(\s*$)/g,"")
};
</script>
转载于:https://www.cnblogs.com/xujiaci/archive/2007/11/15/960362.html
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