public.js

一个完整的

  var userData
function SaveUserData(Main,Sub,strContent){
//存到数据缓存中
//Main为主key 如"List"
//Sub 为子key 如"CustomerFlag"
//strContent 为要存入的内容
//无返回
	userData.setAttribute(Main+userData.value,strContent)
	userData.save(Sub+userData.value)
}

function LoadUserData(Main,Sub){
//从数据缓存中装入到变量中
//Main为主key 如"List"
//Sub 为子key 如"CustomerFlag"
//返回取出的内容
	userData.load(Sub+userData.value)  
	var sTmp=userData.getAttribute(Main+userData.value)
	if (sTmp==null) sTmp=""
	return sTmp

}


function ContDec(sValue,sPointNum) {
	var dblValue=parseFloat(sValue)
	if (isNaN(dblValue)) return sValue
	var iPointNum=parseInt(sPointNum)
	if (isNaN(iPointNum)) iPointNum=0
	if (iPointNum>9) iPointNum=9
	var dbl1=Math.round(dblValue*Math.pow(10,iPointNum))/Math.pow(10,iPointNum)
	var s1=dbl1.toString()
	if (s1.indexOf(".") == -1) {
		var s2="000000000000000"
		s1=s1+"."+s2.substring(0,iPointNum)
	}
	if (right(s1,1)==".")
		s1=s1.substring(s1.length-1,s1.length)
	return s1
}

function fc_insert(sSql) {
//执行插入
	var sXml="<No>"+sSql+"</No>"
	
	var retX=SendHttp("http://"+location.host+"/webprint/servlet/WebPrint?fc_insert",sXml)
	return retX
}
function fc_insert1(sXml) {
//执行为一对多表插入
//参数串先为主表，后为子表，子表的最后字段值主子表关联字段值，在这不用管了（包括后括号也不用管了）。	
	var retX=SendHttp("http://"+location.host+"/webprint/servlet/WebPrint?fc_insert1",sXml)
	return retX
}
function fc_update1(sXml) {
//执行为一对多表修改
//参数串先为主表，后为子表
	var retX=SendHttp("http://"+location.host+"/webprint/servlet/WebPrint?fc_update1",sXml)
	return retX
}

function fc_select(sSql,PageNo,PageSize) {
//执行查询
//PageNo页码
//PageSize页尺寸,即一页含多少行
	var sql1=""
	for(var i=0;i<sSql.length;i++) {
		switch (sSql.charAt(i)) {
			case "<" :
				sql1=sql1+"&lt;";
				break;
			case ">" :
				sql1=sql1+"&gt;";
				break;
			default:
				sql1=sql1+sSql.charAt(i);
		}
	}
	//替代非法XML字符
	var sXml="<No>"+sql1+"</No>"+"<No1>"+PageNo+"</No1>"+"<No2>"+PageSize+"</No2>"
	var retX=SendHttp("http://"+location.host+"/webprint/servlet/WebPrint?fc_select",sXml)
	return retX
}
function isSpace(strMain){

	strComp=strMain

	if (strComp=="　" || strComp=="" || strComp==" " || strComp==null || strComp.length==0 ) { 
		return true
	}
	else
	{
		return false
	}
}
function SendHttp(sAspFile,sSend)
{
    if (navigator.onLine==false) 
    {
		return "你现在处于脱机状态,请联机后再试!"		
    }
    var xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
    xmlhttp.Open("POST", sAspFile, false);
	try
	{
	    xmlhttp.Send("<root>"+sSend+"</root>");
	}
	catch (exception)
	{
		alert("服务器忙!")
	}	
	try
	{
		var str11=xmlhttp.responseText
	}
	catch (exception)
	{
		if (exception.description=='系统错误: -1072896748。') 
		{	
			str11=""
		}
			
	}
	return str11	
}

function curDate() {
	var dDate=new Date()
	var s1=""+dDate.getYear()
	var s2=dDate.getMonth()+1
	if (s2<10) 
		s2="0"+s2
	else
		s2=""+s2
			
	var s3=dDate.getDate()
	if (s3<10) 
		s3="0"+s3
	else
		s3=""+s3

	return s1+"-"+s2+"-"+s3 
}
//字符串实用函数
function getFront(mainStr,searchStr){
	foundOffset=mainStr.indexOf(searchStr)
	if (foundOffset==-1) {
		return null
	}
	return mainStr.substring(0,foundOffset)
}
function getEnd(mainStr,searchStr) {
	foundOffset=mainStr.indexOf(searchStr)
	if (foundOffset==-1) {
		return null
	}
	return mainStr.substring(foundOffset+searchStr.length,mainStr.length)
}
function replaceString(mainStr,searchStr,replaceStr) {
//代替字符串
//mainStr为源串  searchStr为要查找的串  replaceStr为要改为的串
//返回替换后的串
	var front=getFront(mainStr,searchStr)
	var end=getEnd(mainStr,searchStr)
	if (front!=null && end!=null) {
		return front+replaceStr+end
	}
	return null
}		

function left(mainStr,lngLen) {
	if (lngLen>0) {
		return mainStr.substring(0,lngLen)
	}
	else
	{
		return null
	}
}

function right(mainStr,lngLen) {
//	alert(mainStr.length)
	if (mainStr.length-lngLen>=0 && mainStr.length>=0 && mainStr.length-lngLen<=mainStr.length) {
		return mainStr.substring(mainStr.length-lngLen,mainStr.length)
	}
	else
	{
		return null
	}
}

//滤掉左右空格
function trim(strMain) {
	if (strMain==null) return ""
  var str1=strMain
	
	//去掉回车符
  var ascMain=strMain.charCodeAt(strMain.length-1)
	if (ascMain==32) str1=left(strMain,strMain.length-1)

	if (str1==null) return ""

  for (var i=0;i<=str1.length-1;i++) {
       var mychar=str1.charAt(i);
       if ((mychar!=" ") && (mychar!="　")) {
           str1=str1.substring(i,str1.length);
           break;
           } 
      }

  for (var i=str1.length-1;i>0;i--) {
      var mychar=str1.charAt(i);
      if ((mychar!=" ")  && (mychar!="　")) {
         str1=str1.substring(0,i+1);
         break;
      }
  }

  return str1;
}
function fc_RepStr(mainStr,findStr,replaceStr){
//多次替代
	var iStart=0
	var iEnd=0
	var sRet=""
	while (iStart<mainStr.length) {
		iEnd=mainStr.indexOf(findStr,iStart)
		if (iEnd<0) {
			iEnd=mainStr.length
			sRet=sRet+mainStr.substring(iStart,iEnd)
		}
		else {
			sRet=sRet+mainStr.substring(iStart,iEnd)+replaceStr
		}
		iStart=iEnd+findStr.length
		
	}
	return sRet
}