ENTER鍵可以讓光標移到下一個輸入框
<input onkeydown="if(event.keyCode==13)event.keyCode=9" > <br>
只能是中文<input onkeyup="value=value.replace(/[ -~]/g,'')" onkeydown="if(event.keyCode==13)event.keyCode=9"> <br>
屏蔽輸入法<input style="ime-mode:disabled" onkeydown="if(event.keyCode==13)event.keyCode=9"> <br>
只能輸入英文和數字<input onkeyup="value=value.replace(/[\W]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))" onkeydown="if(event.keyCode==13)event.keyCode=9"> <br>
只能是數字<input onkeyup="value=value.replace(/[^\d]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))"><br>
只能顯示，不能修改<input readonly value="只能顯示，不能修改">
只能是數字，判斷按鍵的值。
<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? onkeydown="onlyNum();">?
獲取鍵盤的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='現在是ns瀏覽器';
? var realkey=String.fromCharCode(e.which);
}
? if(ie4){
? var iekey=event.keyCode;
? var nkey='現在是ie瀏覽器';
? var realkey=String.fromCharCode(event.keyCode);
? if(event.keyCode==32){realkey='\' 空格\''}
? if(event.keyCode==13){realkey='\' 回車\''}
? 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瀏覽器中鍵值:'+nkey+'\n'+'ie瀏覽器中鍵值:'+iekey+'\n'+'實際鍵為'+realkey);
}
document.onkeydown = keyDown;
if(ns4){
document.captureEvents(Event.KEYDOWN);}
</script>
</head>
<body>
//Javascript Document.
<hr>
<center>
<h3>請按任意一個鍵。。。。</h3>
</center>
</body>
</html>
限制網頁用鍵盤
<body onkeydown="alert('禁用');return false;">
限制鍵盤的某個鍵：body onkeydown="if(event.keyCode==num){alert('禁用');return false;}
再加個找按鍵的值
<script>
function show(){
? alert("ASCII代碼是："+event.keyCode);
}
</script>
<body onkeydown="show()">
只能是IP地址
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
<meta name="ProgId" content="FrontPage.Editor.Document">
<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地址錯誤！")
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地址輸入</title>
</head>
<body>IP地址輸入
<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 onkeyup="mask(this)" onbeforepaste=mask_c()>.
<input type=text name=ip2 maxlength=3 class=a3 onkeyup="mask(this)" onbeforepaste=mask_c()>.
<input type=text name=ip3 maxlength=3 class=a3 onkeyup="mask(this)" onbeforepaste=mask_c()>.
<input type=text name=ip4 maxlength=3 class=a3 onkeyup="mask(this)" onbeforepaste=mask_c()>
</div>
</body>
用#default#savehistory防止后退清空text文本框：
<HTML>
<HEAD>
<META NAME="save" CONTENT="history">
<STYLE>
? .saveHistory {behavior:url(#default#savehistory);}
</STYLE>
</HEAD>
<BODY>
<INPUT class=saveHistory type=text id=oPersistInput>
<input type=button onclick='javascript:location.href=" value='點擊進入,再按后退鍵試試？'>
</BODY>
</HTML>
TEXTAREA自適應文字行數的多少
<textarea rows=1 name=s1 cols=27 onpropertychange="this.style.posHeight=this.scrollHeight">
上傳預覽圖片
<img id=pic? src=http://www.cnbruce.com/images/logo.gif>
<input type=file name=file><input type=button onclick=pic.src=file.value value=預覽圖片>
<input type=button onclick=alert(file.value) value=圖片地址>
<input type=button onclick="file.outerHTML=file.outerHTML.replace(/value=\w/g,'')" value="清除file里字">
去掉下拉選項的邊框
<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>
下拉列表打開窗口
<select? onChange="if(this.selectedIndex && this.selectedIndex!=0){window.open(this.value);}this.selectedIndex=0;">
<option selected>更多鏈接……</option>
<option value=">
<option value=">
<option value="
</select>
通過下拉菜單傳遞跳轉
<form action="showlog.asp?" >
<select name="cat_id" onpropertychange="form.submit();">
<option value="">==請選擇==</option>
<option value="11">11</option>
<option value="22">22</option>
</select>
</form>
TAB鍵在文本域中的體現
<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 onkeydown="editTab()">
<script>
alert("ok")
</script></textarea>
文本框的上/下拉
form name="cnbruce">
<textarea name="com">
</textarea>
</form>
<SPAN title='放大輸入框' style='FONT-SIZE: 12px; CURSOR: hand'? onclick=document.cnbruce.com.rows+=4>向下</SPAN>
?<SPAN title='縮小輸入框' 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>
一個復選框，點擊之后一組復選框全部都選上
<input type="checkbox" name="checkA" onpropertychange="for(i=0;i<A.children.length;i++){A.children[i].checked=this.checked}">a
<br>
<span id="A">
<input type="checkbox" name="A1">
<input type="checkbox" name="A2">
<input type="checkbox" name="A3">
</span>
Debug Textarea：在線寫 js 腳本的時候，用來即時查錯的東西！
<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)
??????????? // 出錯檢驗代碼~~~~~~
??????????? 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)
??????????????? // 出錯檢驗代碼~~~~~~
??????????????? 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)
??????????? // 出錯檢驗代碼~~~~~~
??????????? 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: \\n\\n';\nstr+='Err: '+msg+' on line: '+(line);\nalert(str);\nopener.goto(line);\nopener.focus();\nwindow.onerror=null;\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[i];
??? }
??? rng.moveStart('character',str_tmp.length+1);
??? str_tmp = "";
??? for(i=ln; i<arr.length; i++) {
??????? str_tmp += arr[i];
??? }
??? 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=' 運 行 ' onclick='runcode()' accesskey='r'>
????????????? <input type='button' value=' 保 存 ' onclick='savecode()' accesskey='s'>
????????????? <input type='button' value=' 跳 轉 ' onclick="goto(prompt('Please input the line number', '1'))"? accesskey='g'>
??????????? </td>
????????? </tr>
??????? </table>
??? </td>
? </tr>
</table>
</BODY>
</HTML>
?