常用JS程式碼集(二)

xtxk_917發表於2006-10-24
 只能是寫限定的東西 程式碼如下:

  ENTER鍵可以讓游標移到下一個輸入框

<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">

  只能是英文和數字.遮蔽了輸入法

<input style="ime-mode:disabled" onkeydown="if(event.keyCode==13)event.keyCode=9">

  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">

  只能是數字

<input onkeyup="value=value.replace(/[^/d]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^/d]/g,''))">

  只能顯示,不能修改的文字框

<input readOnly value="只能顯示,不能修改">

  只能是數字,判斷按鍵 程式碼如下:

<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  onkeydown="onlyNum();"> 

  附: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程式碼是:"+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>

</html>

  用#default#savehistory防止後退清空text文字框:

<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="http://www.webjx.com/"' value='點選進入,再按後退鍵試試?'>
</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.webjx.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裡字">

  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>

  下拉選單開啟視窗

<select  onChange="if(this.selectedIndex && this.selectedIndex!=0){window.open(this.value);}this.selectedIndex=0;">
<option selected>更多連結……</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的顯示

<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  onkeydown="editTab()">
<script>
alert("ok")
</script>
</textarea>

  文字框的上/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>

  一個核取方塊,點選之後一組核取方塊全部都選上

<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:線上寫 js 指令碼的時候,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)
            // 出錯檢驗程式碼~~~~~~
            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)
                // 出錯檢驗程式碼~~~~~~
                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)
            // 出錯檢驗程式碼~~~~~~
            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'>&nbsp;&nbsp;
              <input type='button' value=' 保 存 ' onclick='savecode()' accesskey='s'>&nbsp;&nbsp;
              <input type='button' value=' 跳 轉 ' onclick="goto(prompt('Please input the line number', '1'))"  accesskey='g'>&nbsp;&nbsp;
            </td>
          </tr>
        </table>
    </td>
  </tr>
</table>
</BODY>
</HTML>

  獲取input的非value值,而是顯示文字值

<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裡的option進行分類列表

<span style="position:absolute;border:1px inset #d3d6d9"><select style="margin:-2px; width:200px">
<option selected>------------請選擇------------</option>
<optgroup label="JavaScript&VBScript區">
 <option>原   創
 <option>經   典
<optgroup label="後臺區">
 <option>asp&sql
 <option>php&mysql
</select></span>

  動態新增

<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="新增--&gt;&gt;">
        <input name="button" type="button" class="myButton" onClick="deleteItem('dept_company2','dept_company')" value="&lt;&lt;--刪除">
        <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>

  提示限制輸入的字元數

<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="還可以輸入"+(length-l)+"位元組"
    }
    else
    {
        document.all("byte").innerText="輸入位元組數超出範圍"
    }
    return true
}

function changebyte1(value,length){
    var l=strlength(value)
    if (l<=length) {
        if (document.all!=null) document.all("byte1").innerText="還可以輸入"+(length-l)+"位元組"
    }
    else
    {
        document.all("byte1").innerText="輸入位元組數超出範圍"
    }
    return true
}

function changebyte2(value,length){
    var l=strlength(value)
    if (l<=length) {
        if (document.all!=null) document.all("byte2").innerText="還可以輸入"+(length-l)+"位元組"
    }
    else
    {
        document.all("byte2").innerText="輸入位元組數超出範圍"
    }
    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>

  判斷填寫字數的限制

<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('留言不能超過規定的字數!');
  }
  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>
最多字數:<INPUT disabled maxLength=4 name=total size=3 value=20>
已用字數:<INPUT disabled maxLength=4 name=used size=3 value=0>
剩餘字數:<INPUT disabled maxLength=4 name=remain size=3>
</form>

 

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木木
2003-10-09, 23:52
1.oncontextmenu="window.event.returnvalue=false" 將徹底遮蔽滑鼠右鍵

<table border oncontextmenu=return(false)><td>no</table> 可用於Table

2<body onselectstart="return false"> 取消選取、防止複製

3onpaste="return false" 不準貼上

4oncopy="return false;" oncut="return false;" 防止複製

5<link rel="Shortcut Icon" href="favicon.ico"> IE位址列前換成自己的圖示

6<link rel="Bookmark" href="favicon.ico"> 可以在收藏夾中顯示出你的圖示

7<input style="ime-mode:disabled"> 關閉輸入法

8永遠都會帶著框架
<script language="javascript"><!--
if (window == top)top.location.href = "frames.htm"; //frames.htm為框架網頁
// --></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> 網頁將不能被另存為

11<input type=button value=檢視網頁原始碼
onclick="window.location = 'view-source:'+ 'http://www.htmlcn.com/'">

12取得控制元件的絕對位置

//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,"得到控制元件的位置"
end function
--></script>

13游標是停在文字框文字的最後
<script language="javascript">
function cc()
{
var e = event.srcElement;
var r =e.createTextRange();
r.moveStart('character',e.value.length);
r.collapse(true);
r.select();
}
</script>
<input type=text name=text1 value="123" onfocus="cc()">

14最小化、最大化、關閉視窗
<object id=hh1 classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">
<param name="Command" value="Minimize"></object>
<object id=hh2 classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">
<param name="Command" value="Maximize"></object>
<OBJECT id=hh3 classid="clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11">
<PARAM NAME="Command" value="Close"></OBJECT>

<input type=button value=最小化 onclick=hh1.Click()>
<input type=button value=最大化 onclick=hh2.Click()>
<input type=button value=關閉 onclick=hh3.Click()>
本例適用於IE


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