js validation form part 2_javascript skills

Description: JavaScript script, verify the data items in the form begin
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*/
function checkForm(objFrm){
var len = 0;
len = objFrm.elements.length;
var i = 0;
var objCheck;
//Text Box
for(i = 0; i < len; i ){
objCheck = objFrm.elements[i];
if(objCheck.type == "text" && !f_checkTextValid(objCheck) ) {
return false;

}
}
//Drop-down box
for(i = 0; i < len; i ){
objCheck = objFrm.elements [i];
if(objCheck.type == "select-one" && !f_checkSelectValid(objCheck) ){
return false;

}
}
///Time The segment is valid
if( f_checkStartAndEndDate(objFrm) == false) return false;
return true;
}
function f_checkSelectValid(obj){
//alert("check select");
if(obj.options.length <= 0){
alert("No data in the drop-down selection box!");
return false;
}
return true;
}
function f_checkStartAndEndDate(frm){
var len = frm.elements.length;
if(len == null && len == 0) return true;
var i=0;
var temp;
var objCheck;
var objStartDate;
var objEndDate;
//alert("start date period check");
try{
for(i=0 ; i< len ; i ){
objCheck = frm.elements[i];
temp = objCheck.name;
if( temp.indexOf("startDate") >0 ||temp.indexOf ("beginDate")>0 )
objStartDate = objCheck;
if( temp.indexOf("endDate") > 0 )
objEndDate = objCheck;
}
//alert (objStartDate.value);
//alert(objEndDate.value);
if(objStartDate.value==null || objStartDate.value =="" || objStartDate.value ==null || objStartDate. value == ""){
return true;
}
return checkTwoDate(objStartDate.value, objEndDate.value);
//alert("end date period check");
}catch(E){}
return true;
}
function f_checkTextValid(obj){
//Cannot be null
if(obj.getAttribute("isNeed") != null ){
if(f_isNotNull(obj) == false) return false;
}
//Cannot exceed the length
if(obj.getAttribute("maxlength") != null){
if(f_checkLength(obj) == false) return false;
}
var checkType ="";
checkType = obj.getAttribute("checkType");
if(checkType==null ||checkType=="") return true;
//
if (checkType.indexOf("number") >=0){
if(f_isNumber(obj) == false) return false ;
if(f_checkNumType(obj,checkType) == false) return false;
}
//
if (checkType.indexOf("positive") >=0){
if(f_isNumber(obj) == false) return false;
if(f_isPositive(obj)==false) return false;
if(f_checkNumType(obj,checkType) == false) return false;
}
if (checkType.indexOf("date") >=0){
if(f_checkDate(obj) == false) return false;
}
/*
switch( checkType){
case "number": if(f_isNumber(obj) == false) return false;break;
case "date": if(f_checkDate(obj) == false) return false;break;
default:
}
*/
return true;
}
function f_isNotNull(obj){
if(obj.value == ""){
f_alert (obj, "Null values ​​are not allowed! ");
return false;
}
return true;
}
function f_isNumber(obj){
if(isNaN(obj.value)){
f_alert( obj,"should be of numeric type");
return false;

}
return true;
}
function f_checkDate(obj) {
if(checkDate(obj .value) ==false){
f_alert(obj," is not a legal date format!"); 
return false; 

} 
return true; 
} 
function f_checkLength(obj){ 
if(getTotalBytes(obj) > Math.abs( obj.getAttribute("maxlength") ) ){ 
f_alert(obj," 超出长度限制!"); 
return false; 

} 
return true; 
} 
function  f_alert(obj,alertStr){ 
var fielName = obj.getAttribute("fieldName"); 
if(fielName == null) 
fielName = ""; 
alert(fielName   "n"  alertStr); 
obj.select(); 
obj.focus(); 
} 
function f_checkNumType(obj, numType){ 
//假设: 已经进行数字类型判断 
var strTemp; 
var numpric; 
var numLen; 
var strArr; 
var defaultLen = 19; 
var defaultpric = 5; 
try{ 
if(numType == null|| numType =="") return f_checkNumLenPrec(obj,defaultLen, defaultpric); 
if(numType.indexOf("(") < 0 || numType.indexOf(")") < 0 ) return f_checkNumLenPrec(obj,defaultLen, defaultpric); 
strTemp = numType.substr( numType.indexOf("(")   1 ,numType.indexOf(")") - numType.indexOf("(") -1 ); 
if(strTemp == null||strTemp =="") return f_checkNumLenPrec(obj,defaultLen, defaultpric); 
strArr = strTemp.split(","); 
numLen = Math.abs( strArr[0] ); 
numpric = Math.abs( strArr[1] ); 
return f_checkNumLenPrec(obj,numLen, numpric); 
}catch(e){ 
alert("in f_checkNumType = "   e); 
return f_checkNumLenPrec(obj,defaultLen, defaultpric); 
} 
} 
function f_checkNumLenPrec(obj, len, pric){ 
var numReg; 
var value = obj.value; 
var strValueTemp, strInt, strDec; 
//alert(value   "====="   len   "====="  pric); 
try{ 

numReg =/[-]/; 
strValueTemp = value.replace(numReg, ""); 
strValueTemp = strValueTemp.replace(numReg, ""); 
//整数 
if(pric==0){ 
numReg =/[.]/; 
//alert(numReg.test(value)); 
if(numReg.test(value) == true){ 
f_alert(obj, "输入必须为整数类型!"); 
return false; 
} 

} 
if(strValueTemp.indexOf(".") < 0 ){ 
//alert("lennth=="   strValueTemp); 

if(strValueTemp.length >( len - pric)){ 
f_alert(obj, "整数位不能超过"  (len - pric)  "位"); 
return false; 
} 
}else{ 
strInt = strValueTemp.substr( 0, strValueTemp.indexOf(".") ); 

//alert("lennth=="   strInt); 

if(strInt.length >( len - pric)){ 
f_alert(obj, "整数位不能超过"  (len - pric)  "位"); 
return false; 
} 

strDec = strValueTemp.substr( (strValueTemp.indexOf(".") 1), strValueTemp.length ); 

//alert("pric=="   strDec); 

if(strDec.length > pric){ 
f_alert(obj, "小数位不能超过"   pric  "位"); 
return false; 
} 

} 
return true; 
}catch(e){ 
alert("in f_checkNumLenPrec = "   e); 
return false; 
} 
} 
function f_isPositive(obj){ 
var numReg =/[-]/; 
if(numReg.test(obj.value) == true){ 
f_alert(obj, "必须为正数!"); 
return false; 
} 
return true; 
}

/*
function selectedCheckboxCount(form)
Function description: Count the selected options in the Form
Parameter description:
form: the specified form
*/
function selectedCheckboxCount(form){
var length =0;
var i=0;
var count =0;
eles = form.elements;
while(iobj= eles.item(i);
//type = obj.attributes.item("type").nodeValue;
type = obj.type;
if(type == "checkbox"){
if(obj.checked){
count ;
}
}
i ;
}
return count;
}
//Get the byte length
function getByteLen(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=n 1;
return n
}
/*
Instructions:
1. Clear the data (0.0 and 0) in the table
2. If there is no data in the cell, a space will be automatically added
3. Clear the checkbox of the blank row
Parameters:
clearzero: whether to clear "0", "0.0", false not to clear, true to clear (default is true)
tablename: name of the table to be cleared, default is sortTable
*/
function clear_table(clearzero,tablename)
{
var tobject;
if(tablename==null)
tobject=gmobj("sortTable");
else
tobject= gmobj(tablename);
//If table is not defined, no filtering will be performed
if(tobject==null)
return;

//If the function call parameter is empty, it means To clear 0, 0.0; conversely, do not clear 0, 0.0.
var clear = (clearzero==null)?true:clearzero;
//Clear 0, 0.0, fill in the spaces
var rows = tobject.rows;
var j=0;
for(var i=0;i{
//Get the attribute clear of the first cell. If it is 1, it means there is no data in the row, then clear all the data in the row
while(tobject.rows[i].cells[j] != null)
{
if(clear)
{
if(tobject.rows[i].cells[j] .innerHTML==0 ||tobject.rows[i].cells[j].innerHTML==0.0||tobject.rows[i].cells[j].innerHTML=="")
tobject.rows[ i].cells[j].innerText=" ";
}
else
{
if (tobject.rows[i].cells[j].innerHTML=="")
tobject.rows[i].cells[j].innerText=" ";
}
j ;
}
j=0;
}
return true;
}
function gmobj(mtxt) /* Get object by object name */
{
if (document.getElementById) {
m=document.getElementById(mtxt);
} else if (document.all) {
m=document.all[mtxt];
} else if (document.layers) {
m=document.layers[mtxt];
}
return m;
}
/*
---------------------------------- -----------------------------------------------
Description: JavaScript Script, verify data items in the form end
----------------------------------------- ----------------------------------------
*/
/ *
Purpose: Check whether the input string is in a decimal number format, which can be a negative number (and meet the specified precision)
Input: str: string
l: total number of digits
d: Number of digits after the decimal point
Returns:
Returns true if the verification is passed, otherwise returns false
*/
function isDecimal( str,l,d){
if(isInteger(str)) {
if (l==null) return true;
if (str<0) l--;
if (str.length<=l) return true;
}
var re = /^[-]{0,1}(d )[.] (d )$/;
if (re.test(str)) {
if (l==null) return true;
if (d==null) d=0;
if(RegExp.$1==0&&RegExp.$2==0) return false;
if (RegExp.$1.length RegExp.$2.length<= l
&& RegExp.$2.length<=d) return true;
}
return false;
}
onclick="isNull('Co.PageForm.CompetitorName');"
Co--refer to this page PageForm--refer to formName CompetitorName---refer to text column name