FrontPage超级实用的几种表单校验效果

来源:网络时间:2011-07-01

  只能是写限定的东西

  程序代码:

  ENTER键可以让光标移到下一个输入框

  <input onkeydown='if(event.keyCode==13)event.keyCode=9' >

  只能是中文 <input onkeyup='value=value.replace(/[ -~]/g,'')' onkeydown='if(event.keyCode==13)event.keyCode=9'>

  只能是英文和数字.屏蔽了输入法 <input style='ime-mode:disabled' onkeydown='if(event.keyCode==13)event.keyCode=9'>

  只能输入英文和数字 <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'>

  只能是数字 <input onkeyup='value=value.replace(/[^\d]/g,'') 'onbeforepaste='clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))'>

  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

  程序代码:<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();'>

  *************************************************************

  附:获取键盘的KeyCode

  程序代码:<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    

  程序代码:   
  <body onkeydown='alert('禁用');return false;'>

  限制键盘的某个键:body onkeydown='if(event.keyCode==num){alert('禁用');return false;}   

  再加个找按键的值    

  程序代码:<script>
  function show(){
  alert('ASCII代码是:'+event.keyCode);
  }
  </script>
  <body onkeydown='show()'>

  *************************************************************    

  只能是IP地址    

  程序代码:<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 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>

  </html>

  *************************************************************    

  用#default#savehistory防止后退清空text文本框

   

  程序代码:
  <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='http://www.cnbruce.com/red/'' 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    

  程序代码:   
  <textarea rows=1 name=s1 cols=27 onpropertychange='this.style.posHeight=this.scrollHeight'>

  *************************************************************

  上传预览图片    

  程序代码:<img id=pic src=http://webdesign.chinaitlab.com/UploadFiles_8014/200704/20070426094402829.gif>
  <input type=file name=file><input type=button onclick=pic.src=file.value value=预览图片>
  <input type=button onclick=alert(file.value) value=图片地址>
  <input type=button onclick='file.outerHTML=file.outerHTML.replace(/value=\w/g,'')' value='清除file里字'>

  *************************************************************

  去掉下拉选项的边框    

  程序代码:<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    

  程序代码:
  <select onChange='if(this.selectedIndex && this.selectedIndex!=0){window.open(this.value);}this.selectedIndex=0;'>
  <option selected>更多链接……</option>
  <option value='http://www.cnbruce.com'>cnbruce</option>
  <option value='http://daonet.myrice.com/old/'>daonet</option>
  <option value='http://www.blueidea.com'>blue!dea
  </select>

  *************************************************************

  TAB的显示    

  程序代码:<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    

  程序代码:<form name='cnbruce'>
  <textarea name='com'>
  </textarea>
  </form>
  <SPAN title='放大输入框' style='FONT-SIZE: 12px; CURSOR: hand' onclick=document.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    

  程序代码:

  <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:在线写 js 脚本的时候,用来即时查错的东西!    

  程序代码:<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: \\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=' 运 行 ' onclick='runcode()' accesskey='r'>  
  <input type='button' value=' 保 存 ' onclick='savecode()' accesskey='s'>  
  <input type='button' value=' 跳 转 ' onclick='goto(prompt('Please input the line number', '1'))' accesskey='g'>  
  </td>
  </tr>
  </table>
  </td>
  </tr>
  </table>
  </BODY>
  </HTML>

  *************************************************************

  TAB键在文本域中的体现

   

   

  程序代码:<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>

  *************************************************************

   

   

   

  获取input的非value值,而是显示文本值

   

  程序代码:
  <select name='sss' onChange='alert(this.options[this.selectedIndex].text)'>
  <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

   

  程序代码:
  <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

   

  程序代码:<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' onClick='addItem('dept_company','dept_company2')' value='添加-->>'> <input name='button' type='button' class='myButton' onClick='deleteItem('dept_company2','dept_company')' 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

   

  程序代码:
  <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 onSubmit='return checkdata()' action=''>
  <TEXTAREA onkeydown='return changebyte1(document.test.icqcontent.value,198)' onkeyup='return changebyte1(document.test.icqcontent.value,198)' 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    

  程序代码:
  <script language=javascript>
  function gbcount(message,total,used,remain)
  {
  var max;
  max&n, bsp;= 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' onkeydown=gbcount(this.form.GuestContent,this.form.total,this.form.used,this.form.remain); onkeyup=gbcount(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>


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