在b/s开发中经常用到的javaScript技术

来源：互联网发布：乌丸莲耶知乎编辑：程序博客网时间：2024/05/22 10:46

3.3 多行文本框的值不能超过sMaxStrleng
3.4 多行文本框的值不能少于sMixStrleng
3.5 判断单选框是否选择。
3.6 判断复选框是否选择.
3.7 复选框的全选，多选，全不选，反选
3.8 文件上传过程中判断文件类型
4、字符类
4.1 判断字符全部由a-Z或者是A-Z的字字母组成
      <input onblur="if(/[^a-zA-Z]/g.test(this.value))alert('有错')">
4.2 判断字符由字母和数字组成。
      <input onblur="if(/[^0-9a-zA-Z]/g.test(this.value))alert('有错')">
4.3 判断字符由字母和数字，下划线,点号组成.且开头的只能是下划线和字母
      /^([a-zA-z_]{1})([/w]*)$/g.test(str)
4.4 字符串替换函数.Replace();
5、浏览器类
5.1 判断浏览器的类型
      window.navigator.appName
5.2 判断ie的版本
      window.navigator.appVersion
5.3 判断客户端的分辨率
      window.screen.height; window.screen.width;

6、结合类
6.1 email的判断。
      function ismail(mail)
      {
        return(new RegExp(/^/w+((-/w+)|(/./w+))*/@[A-Za-z0-9]+((/.|-)[A-Za-z0-9]+)*/.[A-Za-z0-9]+$/).test(mail));
      }
6.2 手机号码的验证
6.3 身份证的验证
      function isIdCardNo(num)
      {
        if (isNaN(num)) {alert("输入的不是数字！"); return false;}
        var len = num.length, re;
        if (len == 15)
          re = new RegExp(/^(/d{6})()?(/d{2})(/d{2})(/d{2})(/d{3})$/);
        else if (len == 18)
          re = new RegExp(/^(/d{6})()?(/d{4})(/d{2})(/d{2})(/d{3})(/d)$/);
        else {alert("输入的数字位数不对！"); return false;}
        var a = num.match(re);
        if (a != null)
        {
          if (len==15)
          {
            var D = new Date("19"+a[3]+"/"+a[4]+"/"+a[5]);
            var B = D.getYear()==a[3]&&(D.getMonth()+1)==a[4]&&D.getDate()==a[5];
          }
          else
          {
            var D = new Date(a[3]+"/"+a[4]+"/"+a[5]);
            var B = D.getFullYear()==a[3]&&(D.getMonth()+1)==a[4]&&D.getDate()==a[5];
          }
          if (!B) {alert("输入的身份证号 "+ a[0] +" 里出生日期不对！"); return false;}
        }
        return true;
      }

3.7 复选框的全选，多选，全不选，反选
<form name=hrong>
<input type=checkbox name=All onclick="checkAll('mm')">全选<br/>
<input type=checkbox name=mm onclick="checkItem('All')"><br/>
<input type=checkbox name=mm onclick="checkItem('All')"><br/>
<input type=checkbox name=mm onclick="checkItem('All')"><br/>
<input type=checkbox name=mm onclick="checkItem('All')"><br/>
<input type=checkbox name=mm onclick="checkItem('All')"><br/><br/>

</form>

<SCRIPT LANGUAGE="java script">
function checkAll(str)
{
var a = document.getElementsByName(str);
var n = a.length;
for (var i=0; i<n; i++)
a[i].checked = window.event.srcElement.checked;
}
function checkItem(str)
{
var e = window.event.srcElement;
var all = eval("document.hrong."+ str);
if (e.checked)
{
    var a = document.getElementsByName(e.name);
    all.checked = true;
    for (var i=0; i<a.length; i++)
    {
      if (!a[i].checked){ all.checked = false; break;}
    }
}
else all.checked = false;
}
</SCRIPT>

3.8 文件上传过程中判断文件类型
<input type=file onchange="alert(this.value.match(/^(.*)(/.)(.{1,8})$/)[3])">

画图:
<OBJECT
id=S
style="LEFT: 0px; WIDTH: 392px; TOP: 0px; HEIGHT: 240px"
height=240
width=392
classid="clsid:369303C2-D7AC-11D0-89D5-00A0C90833E6">
</OBJECT>
<SCRIPT>
S.DrawingSurface.ArcDegrees(0,0,0,30,50,60);
S.DrawingSurface.ArcRadians(30,0,0,30,50,60);
S.DrawingSurface.Line(10,10,100,100);
</SCRIPT>

写注册表：
<SCRIPT>
var WshShell = WScript.CreateObject("WScript.Shell");
WshShell.RegWrite ("HKCU//Software//ACME//FortuneTeller//", 1, "REG_BINARY");
WshShell.RegWrite ("HKCU//Software//ACME//FortuneTeller//MindReader", "Goocher!", "REG_SZ");
var bKey = WshShell.RegRead ("HKCU//Software//ACME//FortuneTeller//");
WScript.Echo (WshShell.RegRead ("HKCU//Software//ACME//FortuneTeller//MindReader"));
WshShell.RegDelete ("HKCU//Software//ACME//FortuneTeller//MindReader");
WshShell.RegDelete ("HKCU//Software//ACME//FortuneTeller//");
WshShell.RegDelete ("HKCU//Software//ACME//");
</SCRIPT>

TABLAE相关(客户端动态增加行列）
<HTML>
<SCRIPT LANGUAGE="JScript">
function numberCells() {
    var count=0;
    for (i=0; i < document.all.mytable.rows.length; i++) {
        for (j=0; j < document.all.mytable.rows(i).cells.length; j++) {
            document.all.mytable.rows(i).cells(j).innerText = count;
            count++;
        }
    }
}
</SCRIPT>
<BODY onload="numberCells()">
<TABLE id=mytable border=1>
<TR><TH> </TH><TH> </TH><TH> </TH><TH> </TH></TR>
<TR><TD> </TD><TD> </TD><TD> </TD><TD> </TD></TR>
<TR><TD> </TD><TD> </TD><TD> </TD><TD> </TD></TR>
</TABLE>
</BODY>
</HTML>

１．身份证严格验证：

document.write(cidInfo("380524198002300016"),"<br/>");
document.write(cidInfo("340524198002300019"),"<br/>")
document.write(cidInfo("340524197711111111"),"<br/>")
document.write(cidInfo("34052419800101001x"),"<br/>");
</script>

２．验证ＩＰ地址
<SCRIPT LANGUAGE="java script">
function isip(s){
var check=function(v){try{return (v<=255 && v>=0)}catch(x){return false}};
var re=s.split(".")
return (re.length==4)?(check(re[0]) && check(re[1]) && check(re[2]) && check(re[3])):false
}

var s="202.197.78.129";
alert(isip(s))
</SCRIPT>

３．加sp1后还能用的无边框窗口！！
<HTML XMLNS:IE>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<IE:Download ID="include" STYLE="behavior:url(#default#download)" />
<title>Chromeless Window</title>

<SCRIPT LANGUAGE="JScript">
/*--- Special Thanks For andot ---*/

/*
This following code are designed and writen by Windy_sk <seasonx@163.net>
You can use it freely, but u must held all the copyright items!
*/

/*--- Thanks For andot Again ---*/

var CW_width = 400;
var CW_height = 300;
var CW_top = 100;
var CW_left = 100;
var CW_url = "/";
var New_CW = window.createPopup();
var CW_Body = New_CW.document.body;
var content = "";
var CSStext = "margin:1px;color:black; border:2px outset;border-style:expression(onmouseout=onmouseup=function(){this.style.borderStyle='outset'}, onmousedown=function(){if(event.button!=2)this.style.borderStyle='inset'});background-color:buttonface;width:16px;height:14px;font-size:12px;line-height:11px;cursor:Default;";

//Build Window
include.startDownload(CW_url, function(source){content=source});

function insert_content(){
var temp = "";
CW_Body.style.overflow = "hidden";
CW_Body.style.backgroundColor = "white";
CW_Body.style.border = "solid black 1px";
content = content.replace(/<a ([^>]*)>/g,"<a onclick='parent.open(this.href);return false' $1>");
temp += "<table width=100% height=100% cellpadding=0 cellspacing=0 border=0>";
temp += "<tr style=';font-size:12px;background:#0099CC;height:20;cursor:default' ondblclick=/"Max.innerText=Max.innerText=='1'?'2':'1';parent.if_max=!parent.if_max;parent.show_CW();/" onmouseup='parent.drag_up(event)' onmousemove='parent.drag_move(event)' onmousedown='parent.drag_down(event)' onselectstart='return false' oncontextmenu='return false'>";
temp += "<td style='color:#ffffff;padding-left:5px'>Chromeless Window For IE6 SP1</td>";
temp += "<td style='color:#ffffff;padding-right:5px;' align=right>";
temp += "<span id=Help onclick=/"alert('Chromeless Window For IE6 SP1 - Ver 1.0//n//nCode By Windy_sk//n//nSpecial Thanks For andot')/" style=/""+CSStext+"font-family:System;padding-right:2px;/">?</span>";
temp += "<span id=Min onclick='parent.New_CW.hide();parent.blur()' style=/""+CSStext+"font-family:Webdings;/" title='Minimum'>0</span>";
temp += "<span id=Max onclick=/"this.innerText=this.innerText=='1'?'2':'1';parent.if_max=!parent.if_max;parent.show_CW();/" style=/""+CSStext+"font-family:Webdings;/" title='Maximum'>1</span>";
temp += "<span id=Close onclick='parent.opener=null;parent.close()' style=/""+CSStext+"font-family:System;padding-right:2px;/" title='Close'>x</span>";
temp += "</td></tr><tr><td colspan=2>";
temp += "<div id=include style='overflow:scroll;overflow-x:hidden;overflow-y:auto; HEIGHT: 100%; width:"+CW_width+"'>";
temp += content;
temp += "</div>";
temp += "</td></tr></table>";
CW_Body.innerHTML = temp;
}

setTimeout("insert_content()",1000);

window.onfocus = show_CW;
window.onresize = show_CW;

// Move Window
var drag_x,drag_y,draging=false

function drag_move(e){
if (draging){
New_CW.show(e.screenX-drag_x, e.screenY-drag_y, CW_width, CW_height);
return false;
}
}

function drag_down(e){
if(e.button==2)return;
if(New_CW.document.body.offsetWidth==screen.width && New_CW.document.body.offsetHeight==screen.height)return;
drag_x=e.clientX;
drag_y=e.clientY;
draging=true;
e.srcElement.setCapture();
}

function drag_up(e){
draging=false;
e.srcElement.releaseCapture();
if(New_CW.document.body.offsetWidth==screen.width && New_CW.document.body.offsetHeight==screen.height) return;
CW_top = e.screenX-drag_x;
CW_left = e.screenY-drag_y;
}

</SCRIPT>
</HTML>

电话号码的验证

要求：
　　(1)电话号码由数字、"("、")"和"-"构成
　　(2)电话号码为3到8位
　　(3)如果电话号码中包含有区号，那么区号为三位或四位
　　(4)区号用"("、")"或"-"和其他部分隔开
　　(5)移动电话号码为11或12位，如果为12位,那么第一位为0
　　(6)11位移动电话号码的第一位和第二位为"13"
　　(7)12位移动电话号码的第二位和第三位为"13"
　　根据这几条规则，可以与出以下正则表达式：
　　(^[0-9]{3,4}/-[0-9]{3,8}$)|(^[0-9]{3,8}$)|(^/([0-9]{3,4}/)[0-9]{3,8}$)|(^0{0,1}13[0-9]{9}$)

具有在输入非数字字符不回显的效果，即对非数字字符的输入不作反应。
function numbersonly(field,event){
var key,keychar;
if(window.event){
key = window.event.keyCode;
}
else if (event){
key = event.which;
}
else{
return true
}
keychar = String.fromCharCode(key);
if((key == null)||(key == 0)||(key == 8)||(key == 9)||(key == 13)||(key == 27)){
return true;
}
else if(("0123456789.").indexOf(keychar)>-1){
window.status = "";
return true;
}
else {
window.status = "Field excepts numbers only";
return false;
}
}

验证ip

str=document.RegExpDemo.txtIP.value;
if(/^(/d{1,3})/.(/d{1,3})/.(/d{1,3})/.(/d{1,3})$/.test(str)==false)
{
window.alert('错误的IP地址格式');
document.RegExpDemo.txtIP.select();
document.RegExpDemo.txtIP.focus();
return;
}
if(RegExp.$1<1 || RegExp.$1>254||RegExp.$2<0||RegExp.$2>254||RegExp.$3<0||RegExp.$3>254||RegExp.$4<1||RegExp.$4>254)
{
window.alert('错误的IP地址');
document.RegExpDemo.txtIP.select();
document.RegExpDemo.txtIP.focus();
return;
}
//剔除如 010.020.020.03 前面的0
var str=str.replace(/0(/d)/g,"$1");
str=str.replace(/0(/d)/g,"$1");
window.alert(str);

//一下是取数据的类
//Obj参数指定数据的来源(限定Table),默认第一行为字段名称行
//GetTableData类提供MoveNext方法,参数是表的行向上或向下移动的位数,正数向下移动,负数向上.
//GetFieldData方法获得指定的列名的数据
//Sort_desc方法对指定的列按降序排列
//Sort_asc方法对指定的列按升序排列
//GetData方法返回字段值为特定值的数据数组,提供数据,可以在外部进行其他处理
//Delete方法删除当前记录,数组减少一行
//初始化,Obj:table的名字,Leftlen:左面多余数据长度,Rightlen:右面多余数据长度,
function GetTableData(Obj,LeftLen,RightLen){
var MyObj=document.all(Obj);
var iRow=MyObj.rows.length;
var iLen=MyObj.rows[0].cells.length;
var i,j;

TableData=new Array();
for (i=0;i< iRow;i++){
   TableData[i]=new Array();
   for (j=0;j<iLen;j++){
   TableStr=MyObj.rows(i).cells(j).innerText;
   TableStr=TableStr.substring(LeftLen, TableStr.length-RightLen).Trim();
   TableStr=TableStr.replace(/ /gi,"").replace(//r/n/ig,"");
   TableData[i][j]=TableStr;
   }
   }

this.TableData=TableData;
this.cols=this.TableData[0].length;
this.rows=this.TableData.length;
this.rowindex=0;
}

function movenext(Step){
if (this.rowindex>=this.rows){
return
}

if (Step=="" || typeof(Step)=="undefined") {
if (this.rowindex<this.rows-1)
this.rowindex++;
return;

}
else{
if (this.rowindex + Step<=this.rows-1 && this.rowindex + Step>=0 ){
this.rowindex=this.rowindex + Step;
}
else
{
if (this.rowindex + Step<0){
   this.rowindex= 0;
   return;
   }
if (this.rowindex + Step>this.rows-1){
   this.rowindex= this.rows-1;
   return;
   }
}
}
}

}

this.TableData=desc_array;
}
return;
}

this.TableData=asc_array;
}
return;
}

function getData(Field,FieldValue){
var colindex=-1;
var i,j;

GetData=new Array();
if (typeof(Field)=="undefined" || typeof(FieldValue)=="undefined" ){
return this.TableData;
}

   for(j=0;j<this.cols;j++){
      if (this.TableData[0][j]==Field){
     colindex=j;
     }
   }
   if (colindex!=-1){

   for(i=1;i<this.rows;i++){
      if (this.TableData[i][colindex]==FieldValue){
     GetData[i]=new Array();
     GetData[i]=this.TableData[i];
     }
   }
   }
   return GetData;
}
function DeletE(){
this.TableData=this.TableData.slice(0,this.rowindex).concat(this.TableData.slice(this.rowindex+1,this.TableData.length));
this.rows=this.TableData.length;
return;
}
function updateField(Field,FieldValue){
var colindex=-1;
var i=0;
if (typeof(Field) == "number"){
   colindex=Field;
}
else
{
for (i=0;i<this.cols && this.rowindex<this.rows ;i++){
   if (this.TableData[0][i]==Field){
   colindex=i;
   break;
   }
}
}
if (colindex!=-1) {
this.TableData[this.rowindex][colindex]=FieldValue;
}

}
function movefirst(){
this.rowindex=0;
}
function movelast(){
this.rowindex=this.rows-1;
}
function String.prototype.Trim() {return this.replace(/(^/s*)|(/s*$)/g,"");}
GetTableData.prototype.MoveNext = movenext;
GetTableData.prototype.GetFieldData = getfielddata;
GetTableData.prototype.Sort_asc = sort_asc;
GetTableData.prototype.Sort_desc = sort_desc;
GetTableData.prototype.GetData = getData;
GetTableData.prototype.Delete = DeletE;
GetTableData.prototype.UpdateField = updateField;
GetTableData.prototype.MoveFirst = movefirst;

具体的例子：http://202.119.73.208/NetEAn/com/test/jsprint.htm

在每个文本框的onblur事件中调用校验代码,并且每个文本框中onKeyDown事件中写一个enter转tab函数

//回车键换为tab
function enterToTab()
{
    if(event.srcElement.type != 'button' && event.srcElement.type != 'textarea'
       && event.keyCode == 13)
    {
        event.keyCode = 9;
    }
}

有时候还需要自由编辑表格---
给大家一个自由编辑表格的小例子,写的有点乱,呵呵:）

//===============================start================================

<HTML>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=gb2312">
<TITLE>测试修改表格</TITLE>
<STYLE>
/*提示层的样式*/
div
{
BORDER-RIGHT: #80c144 1px solid;
BORDER-TOP: #80c144 1px solid;
VISIBILITY: hidden;
BORDER-LEFT: #80c144 1px solid;
CURSOR: default;
LINE-HEIGHT: 20px;
BORDER-BOTTOM: #80c144 1px solid;
FONT-FAMILY: 宋体;
font-size:12px;
POSITION: absolute;
BACKGROUND-COLOR: #f6f6f6;
TOP:30px;
LEFT:30px;
}
/*tr的样式*/
tr
{
    font-family: "宋体";
    color: #000000;
    background-color: #C1DBF5;
    font-size: 12px
}
/*table脚注样式*/
.TrFoot
{
    FONT-SIZE: 12px;
    font-family:"宋体", "Verdana", "Arial";
    BACKGROUND-COLOR: #6699CC;
    COLOR:#FFFFFF;
    height: 25;
}
/*trhead属性*/
.TrHead
{
    FONT-SIZE: 13px;
    font-family:"宋体", "Verdana", "Arial";
    BACKGROUND-COLOR: #77AADD;
    COLOR:#FFFFFF;
    height: 25;
}
/*文本框样式*/
INPUT
{
    BORDER-COLOR: #AACEF7 #AACEF7 #AACEF7 #AACEF7;
    BORDER-RIGHT: 1px solid;
    BORDER-TOP: 1px solid;
    BORDER-LEFT: 1px solid;
    BORDER-BOTTOM: 1px solid;
    FONT-SIZE: 12px;
    FONT-FAMILY: "宋体","Verdana";
    color: #000000;
    BACKGROUND-COLOR: #E9EFF5;
}
/*button样式*/
button
{
    BORDER-COLOR: #AACEF7 #AACEF7 #AACEF7 #AACEF7;
    BACKGROUND-COLOR: #D5E4F3;
    CURSOR: hand;
    FONT-SIZE:12px;
    BORDER-RIGHT: 1px solid;
    BORDER-TOP: 1px solid;
    BORDER-LEFT: 1px solid;
    BORDER-BOTTOM: 1px solid;
    COLOR: #000000;
}
</STYLE>
</HEAD>
<BODY>
<SCRIPT language = "java script">

</SCRIPT>

<SCRIPT language = "java script">
<!--
/**
* 编辑表格函数
* 单击某个单元格可以对里面的内容进行自由编辑
* @para tableID 为要编辑的table的id
* @para noEdiID 为不要编辑的td的ID,比如说table的标题
* 可以写为<TD id="no_editer">自由编辑表格</TD>
* 此时该td不可编辑
*/
function editerTableCell(tableId,noEdiId)
{
var tdObject = event.srcElement;
var tObject = ((tdObject.parentNode).parentNode).parentNode;
if(tObject.id == tableId &&tdObject.id != noEdiId&&editer_table_cell_tag == false && run_edit_flag == true)
{
tdObject.innerHTML = "<input type=text id=edit_table_txt name=edit_table_txt value="+tdObject.innerText+" size='15' onKeyDown='enterToTab()'> <input type=button value=' 确定 ' onclick='certainEdit()'>";
edit_table_txt.focus();
edit_table_txt.select();
editer_table_cell_tag = true;
//修改按钮提示信息
editTip.innerText = "请先点确定按钮确认修改!";
}
else
{
return false;
}
}

/**
* 确定修改
*/
function certainEdit()
{
var bObject = event.srcElement;
var tdObject = bObject.parentNode;
var txtObject = tdObject.firstChild;
tdObject.innerHTML = txtObject.value;
//代表编辑框已经关闭
editer_table_cell_tag = false;
//修改按钮提示信息
editTip.innerText = "请单击某个单元格进行编辑!";
}

function enterToTab()
{
    if(event.srcElement.type != 'button' && event.srcElement.type != 'textarea'
       && event.keyCode == 13)
    {
        event.keyCode = 9;
    }
}

/**
* 控制是否编辑
*/
function editStart()
{
if(event.srcElement.value == "开始编辑")
{
event.srcElement.value = "编辑完成";
run_edit_flag = true;
}
else
{
//如果当前没有编辑框,则编辑成功,否则,无法提交
//必须按确定按钮后才能正常提交
if(editer_table_cell_tag == false)
{
   alert("编辑成功结束!");
   event.srcElement.value = "开始编辑";
   run_edit_flag = false;
}
}
}

/**
* 根据不同的按钮提供不同的提示信息
*/
function showTip()
{
if(event.srcElement.value == "编辑完成")
{
editTip.style.top = event.y + 15;
editTip.style.left = event.x + 12;
editTip.style.visibility = "visible";
}
else
{
editTip.style.visibility = "hidden";
}
}
-->
</SCRIPT>
<TABLE id="editer_table" width="100%" align="center"
    onclick="editerTableCell('editer_table','no_editer')">
    <TR class="TrHead">
<TD colspan="3" align="center" id="no_editer">自由编辑表格</TD>
</TR>
<TR>
<TD width="33%">单击开始编辑按钮,然后点击各单元格编辑</TD>
<TD width="33%">2</TD>
<TD width="33%">3</TD>
</TR>
<TR>
<TD width="33%">4</TD>
<TD width="33%">5</TD>
<TD width="33%">6</TD>
</TR>
<TR>
<TD width="33%">one</TD>
<TD width="33%">two</TD>
<TD width="33%">three</TD>
</TR>
<TR>
<TD width="33%">four</TD>
<TD width="33%">five</TD>
<TD width="33%">six</TD>
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