常用JS代码集:
只能是写限定的东西 代码如下:
ENTER键可以让光标移到下一个输入框
<input >
只能是中文
<input >
只能是英文和数字.屏蔽了输入法
<input style="ime-mode:disabled" >
只能输入英文和数字
<input >
只能是数字
<input >
只能显示，不能修改的文本框
<input readOnly value="只能显示，不能修改">
只能是数字,判断按键 代码如下:
<script language=javascript>
function onlyNum()
{
if(!((event.keyCode>=48&&event.keyCode<=57)||(event.keyCode>=96&&event.keyCode<=105)||(event.keyCode==8)))
event.returnValue=false;
}
</script>
<input >
附：获取键盘的KeyCode
<html>
<head>
<script language="javascript">
ns4 = (document.layers) ? true : false;
ie4 = (document.all) ? true : false;
function keyDown(e){
if(ns4){
var nkey=e.which;
var iekey='现在是ns浏览器';
var realkey=String.fromCharCode(e.which);
}
if(ie4){
var iekey=event.keyCode;
var nkey='现在是ie浏览器';
var realkey=String.fromCharCode(event.keyCode);
if(event.keyCode==32){realkey='\' 空格\''}
if(event.keyCode==13){realkey='\' 回车\''}
if(event.keyCode==27){realkey='\' Esc\''}
if(event.keyCode==16){realkey='\' Shift\''}
if(event.keyCode==17){realkey='\' Ctrl\''}
if(event.keyCode==18){realkey='\' Alt\''}
}
alert('ns浏览器中键值:'+nkey+'\n'+'ie浏览器中键值:'+iekey+'\n'+'实际键为'+realkey);
}
document.onkeydown = keyDown;
if(ns4){
document.captureEvents(Event.KEYDOWN);}
</script>
</head>
<body>
//Javascript Document.
<hr>
<center>
<h3>请按任意一个键。。。。</h3>
</center>
</body>
</html>
限制网页用键盘
<body >
限制键盘的某个键：
<body ASCII代码是："+event.keyCode);
}
</script>
<body >
只能是IP地址
<html>
<head>
<meta http-equiv="Content-Type" c>
<meta name="GENERATOR" c>
<meta name="ProgId" c>
<style>
.a3{width:30;border:0;text-align:center}
</style>
<script>
function mask(obj){
obj.value=obj.value.replace(/[^\d]/g,'')
key1=event.keyCode
if (key1==37 || key1==39)
{ obj.blur();
nextip=parseInt(obj.name.substr(2,1))
nextip=key1==37?nextip-1:nextip+1;
nextip=nextip>=5?1:nextip
nextip=nextip<=0?4:nextip
eval("ip"+nextip+".focus()")
}
if(obj.value.length>=3)
if(parseInt(obj.value)>=256 || parseInt(obj.value)<=0)
{
alert(parseInt(obj.value)+"IP地址错误！")
obj.value=""
obj.focus()
return false;
}
else
{ obj.blur();
nextip=parseInt(obj.name.substr(2,1))+1
nextip=nextip>=5?1:nextip
nextip=nextip<=0?4:nextip
eval("ip"+nextip+".focus()")
}
}
function mask_c(obj)
{
clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))
}
</script>
<title>IP地址输入</title>
</head>
<body>IP地址输入
<div style="border-width:1;border-color:balck;border-style:solid;width:165;font-size:9pt">
<input type=text name=ip1 maxlength=3 class=a3 ()>.
<input type=text name=ip2 maxlength=3 class=a3 ()>.
<input type=text name=ip3 maxlength=3 class=a3 ()>.
<input type=text name=ip4 maxlength=3 class=a3 ()>
</div>
</body>
</html>
用#default#savehistory防止后退清空text文本框：
<HTML>
<HEAD>
<META NAME="save" C>
<STYLE>
.saveHistory {behavior:url(#default#savehistory);}
</STYLE>
</HEAD>
<BODY>
<INPUT class=saveHistory type=text id=oPersistInput>
<input type=button onclick='javascript:location.href="http://www.webjx.com/"' value='点击进入,再按后退键试试？'>
</BODY>
</HTML>
TEXTAREA自适应文字行数的多少
<textarea rows=1 name=s1 cols=27 >
上传预览图片
<img id=pic src=http://www.webjx.com/images/logo.gif>
<input type=file name=file><input type=button .src=file.value value=预览图片>
<input type=button (file.value) value=图片地址>
<input type=button value="清除file里字">
去掉下拉选项的边框
<div style="position: absolute; left: 10px; top: 10px; width: 115px; height: 20px; clip:rect(2 114 20 2);">
<select>
<option >cnpeople</option>
<option >cnrose</option>
<option >cnbruce</option>
</select>
</font>
</div>
下拉列表打开窗口
<select >
<option selected>更多链接……</option>
<option value="cnbrucehttp://www.cnbruce.com">cnbruce</option>
<option value="daonethttp://daonet.myrice.com/old/">daonet</option>
<option value="blue!dea/'>http://www.blueidea.com">blue!dea
</select>
TAB的显示
<script>
function editTab()
{
var code, sel, tmp, r
var tabs=""
event.returnValue = false
sel =event.srcElement.document.selection.createRange()
r = event.srcElement.createTextRange()
switch (event.keyCode)
{
case (8) :
if (!(sel.getClientRects().length > 1))
{
event.returnValue = true
return
}
code = sel.text
tmp = sel.duplicate()
tmp.moveToPoint(r.getBoundingClientRect().left, sel.getClientRects()[0].top)
sel.setEndPoint("startToStart", tmp)
sel.text = sel.text.replace(/^\t/gm, "")
code = code.replace(/^\t/gm, "").replace(/\r\n/g, "\r")
r.findText(code)
r.select()
break
case (9) :
if (sel.getClientRects().length > 1)
{
code = sel.text
tmp = sel.duplicate()
tmp.moveToPoint(r.getBoundingClientRect().left, sel.getClientRects()[0].top)
sel.setEndPoint("startToStart", tmp)
sel.text = "\t"+sel.text.replace(/\r\n/g, "\r\t")
code = code.replace(/\r\n/g, "\r\t")
r.findText(code)
r.select()
}
else
{
sel.text = "\t"
sel.select()
}
break
case (13) :
tmp = sel.duplicate()
tmp.moveToPoint(r.getBoundingClientRect().left, sel.getClientRects()[0].top)
tmp.setEndPoint("endToEnd", sel)
for (var i=0; tmp.text.match(/^[\t]+/g) && i<tmp.text.match(/^[\t]+/g)[0].length; i++) tabs += "\t"
sel.text = "\r\n"+tabs
sel.select()
break
default :
event.returnValue = true
break
}
}
</script>
<textarea cols=75 rows=20 >
<script>
alert("ok")
</script>
</textarea>
文本框的上/下拉
<form name="cnbruce">
<textarea name="com">
</textarea>
</form>
<SPAN title='放大输入框' style='FONT-SIZE: 12px; CURSOR: hand' .cnbruce.com.rows+=4>向下</SPAN>
<SPAN title='缩小输入框' style='FONT-SIZE: 12px; CURSOR: hand' class='arrow' onclick='if(document.cnbruce.com.rows>=4)document.cnbruce.com.rows-=4;else return false'>向上</SPAN>
一个复选框，点击之后一组复选框全部都选上
<input type="checkbox" name="checkA" >a
<br>
<span id="A">
<input type="checkbox" name="A1">
<input type="checkbox" name="A2">
<input type="checkbox" name="A3">
</span>
Debug Textarea：在线写 js 脚本的时候，用来即时查错的东西！
<HTML>
<HEAD>
<TITLE>Debug Textarea</TITLE>
<meta http-equiv='Content-Type' content='text/html; charset=gb2312'>
</HEAD>
<style>
* {
font-size: 12px
}
body {
margin: 10px; padding: 0px
}
table.list{
cursor: default;
border:1px solid #cccccc
background-color: #cccccc;
border-collapse: collapse;
border-Color: #cccccc;
}
</style>
<script language="javascript">
// Coded by windy_sk <windy_sk@126.com> 20040205
function reportError(msg,url,line) {
var str = "You have found an error as below: \n\n";
str += "Err: " + msg + " on line: " + line;
alert(str);
return true;
}
window.onerror = reportError;
document.onkeydown = function() {
if(event.ctrlKey){
switch(event.keyCode) {
case 82: //r
runcode();
break;
case 83: //s
savecode();
break;
case 71: //g
goto(prompt('Please input the line number', '1'));
break;
case 65: //a
document.execCommand("SelectAll");
break;
case 67: //c
document.execCommand("Copy");
break;
case 88: //x
document.execCommand("Cut");
break;
case 86: //v
document.execCommand("Paste");
break;
case 90: //z
document.execCommand("Undo");
break;
case 89: //y
document.execCommand("Redo");
break;
default:
break;
}
event.keyCode = 0;
event.returnValue = false;
}
return;
}
function show_ln(){
var txt_ln = document.getElementById('txt_ln');
var txt_main = document.getElementById('txt_main');
txt_ln.scrollTop = txt_main.scrollTop;
while(txt_ln.scrollTop != txt_main.scrollTop) {
txt_ln.value += (i++) + '\n';
txt_ln.scrollTop = txt_main.scrollTop;
}
return;
}
function editTab(){
var code, sel, tmp, r
var tabs=''
event.returnValue = false
sel =event.srcElement.document.selection.createRange()
r = event.srcElement.createTextRange()
switch (event.keyCode){
case (8) :
if (!(sel.getClientRects().length > 1)){
event.returnValue = true
return
}
code = sel.text
tmp = sel.duplicate()
tmp.moveToPoint(r.getBoundingClientRect().left, sel.getClientRects()[0].top)
// 出错检验代码~~~~~~
if(sel.parentElement() != tmp.parentElement()) return;
sel.setEndPoint('startToStart', tmp)
sel.text = sel.text.replace(/^\t/gm, '')
code = code.replace(/^\t/gm, '').replace(/\r\n/g, '\r')
r.findText(code)
r.select()
break
case (9) :
if (sel.getClientRects().length > 1){
code = sel.text
tmp = sel.duplicate()
tmp.moveToPoint(r.getBoundingClientRect().left, sel.getClientRects()[0].top)
// 出错检验代码~~~~~~
if(sel.parentElement() != tmp.parentElement()) return;
sel.setEndPoint('startToStart', tmp)
sel.text = '\t'+sel.text.replace(/\r\n/g, '\r\t')
code = code.replace(/\r\n/g, '\r\t')
r.findText(code)
r.select()
}else{
sel.text = '\t'
sel.select()
}
break
case (13) :
tmp = sel.duplicate()
tmp.moveToPoint(r.getBoundingClientRect().left, sel.getClientRects()[0].top)
// 出错检验代码~~~~~~
if(sel.parentElement() != tmp.parentElement()) return;
tmp.setEndPoint('endToEnd', sel)
for (var i=0; tmp.text.match(/^[\t]+/g) && i<tmp.text.match(/^[\t]+/g)[0].length; i++) tabs += '\t'
sel.text = '\r\n'+tabs
sel.select()
break
default :
event.returnValue = true
break;
}
return;
}
function runcode() {
var str = document.getElementById("txt_main").value;
var code_win = window.open('about:blank');
code_win.document.open();
code_win.document.writeln("<script>");
code_win.document.writeln("function reportError(msg,url,line){\nline-=14;\nvar str='You have found an error as below: [url=file://n//n';/nstr+='Err]\\n\\n';\nstr+='Err[/url]: '+msg+' on line: '+(line);\nalert(str);\nopener.goto(line);\nopener.focus();\nwindow.;\nsetTimeout('self.close()',10);\nreturn true;\n}");
code_win.document.writeln("window.onerror = reportError;");
code_win.document.writeln("<\/script>");
code_win.document.writeln(str);
code_win.document.close();
return;
}
function savecode() {
var str = document.getElementById("txt_main").value;
var code_win = window.open('about:blank','_blank','top=10000');
code_win.document.open();
code_win.document.writeln(str);
code_win.document.close();
code_win.document.execCommand('saveas','','code.html');
code_win.close();
return;
}
function goto(ln) {
if(!/^\d+$/.test(ln)) return;
var obj = document.getElementById("txt_main");
var rng = obj.createTextRange();
var arr = obj.value.replace(/\r/, "").split(/\n/);
if(ln>arr.length) ln = arr.length;
var str_tmp = "";
for(var i=0; i<ln-1; i++) {
str_tmp += arr;
}
rng.moveStart('character',str_tmp.length+1);
str_tmp = "";
for(i=ln; i<arr.length; i++) {
str_tmp += arr;
}
rng.moveEnd('character',-str_tmp.length);
rng.select();
return;
}
window.onload = function() {document.getElementById("txt_main").value = "<script>\nalert(')\n<\/script>";}
</script>
<BODY>
<table width='600' class='list' border='1' bgcolor='#eeeeee' bordercolorlight='#000000' bordercolordark='#FFFFFF' cellpadding='0' cellspacing='0'>
<tr bgcolor='#cccccc'>
<td colspan='2' height='20' align='center'><b>Debug Textarea</b></td>
</tr>
<tr>
<td colspan='2'>
<table width='95%' border='0' align='center' >
<tr>
<td align='center'><br />
<textarea id='txt_ln' name='content' rows='10' style='width:40px;overflow:hidden;height:200px;border-right:0px;text-align:right;line-height:14px' onselectstart='this.nextSibling.focus();return false' readonly></textarea><textarea id='txt_main' name='content' rows='10' cols='80' onkeydown='editTab()' onkeyup='show_ln()' onscroll='show_ln()' wrap='off' style='overflow:auto;height:200px;padding-left:5px;border-left:0px;line-height:14px'></textarea>
<script>for(var i=1; i<=20; i++) document.getElementById('txt_ln').value += i + '\n';</script>
</td>
</tr>
<tr>
<td align='center'><br />
<input type='button' value=' 运 行 ' onclick='runcode()' accesskey='r'>
<input type='button' value=' 保 存 ' onclick='savecode()' accesskey='s'>
<input type='button' value=' 跳 转 ' accesskey='g'>
</td>
</tr>
</table>
</td>
</tr>
</table>
</BODY>
</HTML>
获取input的非value值，而是显示文本值
<select name="sss" >
<option value="1">asdf</option>
<option value="2">bbbb</option>
<option value="3">ccc</option>
</select>
select里的option进行分类列表
<span style="position:absolute;border:1px inset #d3d6d9"><select style="margin:-2px; width:200px">
<option selected>------------请选择------------</option>
<optgroup label="JavaScript&VBScript区">
<option>原 创
<option>经 典
<optgroup label="后台区">
<option>asp&sql
<option>php&mysql
</select></span>
动态添加
<form name="myForm" method="post">
<select name="dept_company" size="10" multiple id="dept_company" class="mySelect">
<option value="">Please Select...</option>
<option value="a">AA</option>
<option value="b">BB</option>
<option value="c">CC</option>
</select><input name="dept_company_list" type="hidden">
<input name="button" type="button" class="myButton" value="添加-->>">
<input name="button" type="button" class="myButton" value="<<--删除">
<select name="dept_company2" size="10" multiple id="dept_company2" class="mySelect">
</select>
</form>
<script>
function addItem(fromName,toName){
eval("var obj1=myForm."+fromName);
eval("var obj2=myForm."+toName);
obj1.options[0].selected=false;
if(obj1.selectedIndex == -1)
return false;
var tempValue;
var tempText;
for(var i=1;i<obj1.length;i++){ //begin from 1
if(obj1.selectedIndex == -1)break;
tempValue=obj1.options[obj1.selectedIndex].value;
tempText=obj1.options[obj1.selectedIndex].text;
obj1.options[obj1.selectedIndex]=null;
obj2.add(new Option(tempText,tempValue),0);
}
}
function deleteItem(fromName,toName){
eval("var obj1=myForm."+fromName);
eval("var obj2=myForm."+toName);
if(obj1.selectedIndex == -1)
return false;
var tempValue;
var tempText;
for(var i=0;i<obj1.length;i++){ //begin from 0
if(obj1.selectedIndex == -1)break;
tempValue=obj1.options[obj1.selectedIndex].value;
tempText=obj1.options[obj1.selectedIndex].text;
obj1.options[obj1.selectedIndex]=null;
obj2.add(new Option(tempText,tempValue),1); //addItem index is 1
}
}
</script>
提示限制输入的字符数
<script language="JavaScript">
<!--
function SymError()
{
return true;
}
window.onerror = SymError;
function strlength(str){
var l=str.length;
var n=l
for (var i=0;i<l;i++)
{
if (str.charCodeAt(i)<0||str.charCodeAt(i)>255) n++
}
return n
}
function changebyte(value,length){
var l=strlength(value)
if (l<=length) {
if (document.all!=null) document.all("byte").innerText="还可以输入"+(length-l)+"字节"
}
else
{
document.all("byte").innerText="输入字节数超出范围"
}
return true
}
function changebyte1(value,length){
var l=strlength(value)
if (l<=length) {
if (document.all!=null) document.all("byte1").innerText="还可以输入"+(length-l)+"字节"
}
else
{
document.all("byte1").innerText="输入字节数超出范围"
}
return true
}
function changebyte2(value,length){
var l=strlength(value)
if (l<=length) {
if (document.all!=null) document.all("byte2").innerText="还可以输入"+(length-l)+"字节"
}
else
{
document.all("byte2").innerText="输入字节数超出范围"
}
return true
}
</script>
<form method="post" name=test action="">
<TEXTAREA name=icqcontent cols=40 rows="3"></TEXTAREA>
<SPAN id=byte1><SCRIPT language=JavaScript>changebyte1(document.test.icqcontent.value,198);</SCRIPT></SPAN>
</form>
判断填写字数的限制
<script language=javascript>
function gbcount(message,total,used,remain)
{
var max;
max = total.value;
if(message.value.length > max){
message.value = message.value.substring(0,max);
used.value = max;
remain.value = 0;
alert('留言不能超过规定的字数!');
}
else{
used.value = message.value.length;
remain.value = max - used.value;
}
}
</script>
<form name='myform' >
<textarea name='GuestContent' cols='59' rows='6' (this.form.GuestContent,this.form.total,this.form.used,this.form.remain); (this.form.GuestContent,this.form.total,this.form.used,this.form.remain);></textarea>
最多字数：<INPUT disabled maxLength=4 name=total size=3 value=20>
已用字数：<INPUT disabled maxLength=4 name=used size=3 value=0>
剩余字数：<INPUT disabled maxLength=4 name=remain size=3>
</form>
-------------------------------------------------------------------------------------------------------------------------------
木木
2003-10-09, 23:52
1. 将彻底屏蔽鼠标右键
<table border (false)><td>no</table> 可用于Table
2<body > 取消选取、防止复制
3 不准粘贴
4 防止复制
5<link rel="Shortcut Icon" href="favicon.ico"> IE地址栏前换成自己的图标
6<link rel="Bookmark" href="favicon.ico"> 可以在收藏夹中显示出你的图标
7<input style="ime-mode:disabled"> 关闭输入法
8永远都会带着框架
<script language="javascript"><!--
if (window == top)top.location.href = "frames.htm"; //frames.htm为框架网页
// --></script>
9防止被人frame
<SCRIPT LANGUAGE=javascript><!--
if (top.location != self.location)top.location=self.location;
// --></SCRIPT>
10<noscript><iframe src=*.html></iframe></noscript> 网页将不能被另存为
11<input type=button value=查看网页源代码
>
12取得控件的绝对位置
//javascript
<script language="javascript">
function getIE(e){
var t=e.offsetTop;
var l=e.offsetLeft;
while(e=e.offsetParent){
t+=e.offsetTop;
l+=e.offsetLeft;
}
alert("top="+t+"\nleft="+l);
}
</script>
//VBScript
<script language="VBScript"><!--
function getIE()
dim t,l,a,b
set a=document.all.img1
t=document.all.img1.offsetTop
l=document.all.img1.offsetLeft
while a.tagName<>"BODY"
set a = a.offsetParent
t=t+a.offsetTop
l=l+a.offsetLeft
wend
msgbox "top="&t&chr(13)&"left="&l,64,"得到控件的位置"
end function
--></script>
posted on 2010-01-05 02:34
逍湘 阅读(343)
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