function checkMail(obj,error)
{
if (obj == null)
return "NULL";
if (obj.value == "")
return "EMPTY";
var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
if (filter.test(obj.value))
return true;
else
alert(error);
return false;
}
function checkDigitalChar(cntrl,errmsg3,flag,errmsg1,errmsg2)
{
var str;
str = cntrl.value;
if (str.indexOf(" ") >=0)
{
window.alert(errmsg3);
cntrl.focus();
cntrl.select();
return false;
}
if (flag == 1){
if(str.length==0)
{
//alert("Input is blank, please re-input.");
alert(errmsg1);
return false;
}
}
for(var loop_index=0; loop_index<str.length; loop_index++)
{
if(str.charAt(loop_index) == '0'
||str.charAt(loop_index) == '1'
||str.charAt(loop_index) == '2'
||str.charAt(loop_index) == '3'
||str.charAt(loop_index) == '4'
||str.charAt(loop_index) == '5'
||str.charAt(loop_index) == '6'
||str.charAt(loop_index) == '7'
||str.charAt(loop_index) == '8'
||str.charAt(loop_index) == '9')
continue;
else
{
//alert("Valid characters are 0-9. Please re-input.");
alert(errmsg2);
return false;
}
}
return true;
}
str.lengthif(str.length==0)
{
//alert("Input is blank, please re-input.");
alert(errmsg1);
return false;
}
{
if (obj == null)
return "NULL";
if (obj.value == "")
return "EMPTY";
var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
if (filter.test(obj.value))
return true;
else
alert(error);
return false;
}
function checkDigitalChar(cntrl,errmsg3,flag,errmsg1,errmsg2)
{
var str;
str = cntrl.value;
if (str.indexOf(" ") >=0)
{
window.alert(errmsg3);
cntrl.focus();
cntrl.select();
return false;
}
if (flag == 1){
if(str.length==0)
{
//alert("Input is blank, please re-input.");
alert(errmsg1);
return false;
}
}
for(var loop_index=0; loop_index<str.length; loop_index++)
{
if(str.charAt(loop_index) == '0'
||str.charAt(loop_index) == '1'
||str.charAt(loop_index) == '2'
||str.charAt(loop_index) == '3'
||str.charAt(loop_index) == '4'
||str.charAt(loop_index) == '5'
||str.charAt(loop_index) == '6'
||str.charAt(loop_index) == '7'
||str.charAt(loop_index) == '8'
||str.charAt(loop_index) == '9')
continue;
else
{
//alert("Valid characters are 0-9. Please re-input.");
alert(errmsg2);
return false;
}
}
return true;
}
str.lengthif(str.length==0)
{
//alert("Input is blank, please re-input.");
alert(errmsg1);
return false;
}
if (document.forms[0].elements["文本框的名字"].value == "")
{
alert ("文本框为空");
}
2
if (isNan(document.forms[0].elements["文本框的名字"].value))
{
alert ("文本框不是数字");
}