customer.inc

java中的jsp+servlet技术编写的一个超市进销存的的系统

<script id="clientEventhandlersJS"LANGUAGE="JAVASCRIPT">
<!--
function isEmpty(s){
   return((s==null)||(s.length==0));
}

function isWhitespace(s){
   var whitespace="/t/n/r";
   
   if(isEmpty(s)) return true;
   
   var i;
   for(i=0;i<s.length;i++)
   {
     var c=s.charAt(i);
     
     if(whitespace.indexOf(c)!=-1)
       continue;
     else
       return false;
    }
    return true;
 }
 
 function isEmail(s){
    var i=1;
    var sLength=s.length;
    
    while((i<sLength)&&(s.charAt(i)!="@"))
    {
      i++;
    }
    
    if((i>=sLength)||(s.charAt(i)!="@")) return false;
    else i+=2;
    
    while((i<sLength)&&(s.charAt(i)!="."))
    {
      i++;
    }
    
    if((i>=sLength-1)||(s.charAt(i)!=".")) return false;
    else return true;
 }
 function warnEmpty (theField,s)
 {    alert(s);
      theField.focus();
      return false;
 }
 
 function warnInvalid(theField,s)
 {    alert(s);
      theField.focus();
      theField.select();
      return false;
 }
 function checkString (theField,s)//字符
 {
    if(theField==null)return true;
    if(isWhitespace(theField.value))
      return warnEmpty(theField,s);
    else return true;
 }
 
 function checkEmail (theField,s)//电子邮件
 {
    if(!isEmail(theField.value))
      return warnInvalid(theField,s);
    else return true;
 }
 
 function isNumber(s)
 {
   var digits="0123456789";
   var i=0;
   var sLength=s.length;
   
   while((i<sLength))
   { 
     var c=s.charAt(i);
     if(digits.indexOf(c)==-1) return false;
     i++;
   }
   return true;
}

 function checkSelect(theSelect,s)//选择
 { 
   if(theSelect.options[theSelect.selectedIndex].value!="") return true;
   else
   {
     theSelect.focus();
     warEmpty(theSelect,s);
     return false;
    }
  }
 
 function checkNumber(theField,s)//数字
 {
    if(!isNumber(theField.value))  
      return warnEmpty(theField,s);
    if(isWhitespace(theField.value))
      return warnEmpty(theField,s);
    else return true;
  }
  
 function checkZip(theField,s)//邮编
 {
    var ss=theField.value;
    var digits="0123456789";
    var i=0;
    var sLength=ss.length;
    
    if(sLength<6)
      return warnInvalid(theField,s);
      
    while((i<sLength))
    {
      var c=ss.charAt(i);
      if(digits.indexOf(c)==-1)
             return warnInvalid(theField,s);
             
      i++;
    }
    return true;
 }
 
 function checkZipok(theField,s)//邮编
 {
    var ss=theField.value;
    var digits="0123456789.";
    var i=0;
    var sLength=ss.length;
    
    if(sLength<3)
      return warnInvalid(theField,s);
      
    while((i<sLength))
    {
      var c=ss.charAt(i);
      if(digits.indexOf(c)==-1)
             return warnInvalid(theField,s);
             
      i++;
    }
    return true;
 }




 function checkZip1(theField,s)//年
 {
    var ss=theField.value;
    var digits="0123456789";
    var i=0;
    var sLength=ss.length;
    
    if(sLength<4)
      return warnInvalid(theField,s);
      
    while((i<sLength))
    {
      var c=ss.charAt(i);
      if(digits.indexOf(c)==-1)
             return warnInvalid(theField,s);
             
      i++;
    }
    return true;
 }
 
  function checkZip2(theField,s)//月
 {
    var ss=theField.value;
    var digits="0123456789";
    var i=0;
    var sLength=ss.length;
    
    if(sLength<2)
      return warnInvalid(theField,s);
      
    while((i<sLength))
    {
      var c=ss.charAt(i);
      if(digits.indexOf(c)==-1)
             return warnInvalid(theField,s);
             
      i++;
    }
    return true;
 }
 
 
 function checkPhone(theField,s)//电话
 {
    var ss=theField.value;
    var digits="0123456789-";
    var i=0;
    var sLength=ss.length;
    
    while((i<sLength))
    {
       var c=ss.charAt(i);
       if(digits.indexOf(c)==-1)
          return warnInvalid(theField,s);
       i++;
     }
     
     c="--";
     if(ss.indexOf(c)!=-1)
       return warnInvalid(theField,s);
       
     return true;
 }
 
 function checkPassWord(theField)
 {
    if(theField.value.length<4)
    {
       alert("密码长度小于4");
       theField.focus();
       return false;
     }
     else return true;
 }

 function checkIdcard(theField)
 {
    if(theField.value.length!=0){
	    if(theField.value.length!=15){
	       if(theField.value.length!=18){    
		 alert("身份证号码无效！");
		 theField.focus();
		 return false;
		}
		else return true;
	     }
	     else return true;
     }
     else return true;
 }
 function isDouble(s)
 {
   var digits="0123456789.";
   var i=0;
   var sLength=s.length;
   var j=0;
   while((i<sLength))
   { 
     var c=s.charAt(i);
     if(digits.indexOf(c)==-1) 
	    return false;
	 else {
		 if(digits.indexOf(c)==10)
            j++;   
		 if (j>1)
		   return false;
       } 
      i++;
   }
   return true;

 }
 function checkFigure(theField,s)
 {
    vv=theField.value;
    var iPos=vv.indexOf(".");
    if(iPos==0)vv="0"+vv;
    if(iPos==(vv.length-1))  vv==vv+"0";
    
       xx=parsefloat(vv);
       ww=xx.tostring(10);
       var i=vv.length-ww.length;
       var j=0;
       if(i>0)  {
           iPos=ww.indexOf(".");
           if(iPos==-1){ww=ww+".";
                          i=i-1;}
           for(j=0;j<i;j++)
                ww=ww+"0";
          }
          
          if(ww!=vv)
              return warnInvalid(theField,s);
          
          return true;
  }
  
 -->
  </script>