verify.js文件四

function isFloatLength (s,label_name,allow_len, dec,floatErrMes) {
var seenDecimalPoint = false;
var posDecimalPoint;
for (i = 0; i < s.length; i++) {
// Check that current character is number.
var c = s.charAt(i);
if ((c == decimalPointDelimiter) && !seenDecimalPoint) {
seenDecimalPoint = true;
posDecimalPoint = i;
}
} //End For

if (seenDecimalPoint == true) {
if ((s.length - posDecimalPoint - 1) > dec || posDecimalPoint==(s.length-1)) { //right too long
if (!isEmpty(label_name))
alert("Please at "+label_name+" input number, "+dec+" decimal fraction.");
return false;
}
else if (posDecimalPoint > (allow_len - dec) ) { // left too long
if (!isEmpty(label_name))
alert("Attention "+label_name+" can't larger than "+floatErrMes+".");
return false;

} //else
} else if (s.length > allow_len - dec) { // left too long
if (!isEmpty(label_name))
alert("Attention "+label_name+" can't larger than "+floatErrMes+".");
return false;

} //else
return true;
}

//is numeric?
function isFloatNaN (s,label_name) {
if (isNaN(s)) {
if (!isEmpty(label_name)) {
alert("Please at "+label_name+" input number");
}
return true;
}
return false;
}

function isFileCharNum(s) {
var str = /^[0-9a-zA-Z-;.; ;_]*$/;
return (str.test(s));
}

function chkFileChar(field_name,label_name,defaultEmpty){
var s = field_name.value;
if (typeof(defaultEmpty) == "undefined") defaultEmpty = true;
if(isEmpty(s)) {
if (!defaultEmpty) {
alert ("Please input " + label_name);
return false;
} else return true;
}
var str = s.substring(s.lastIndexOf("\\")+1);
if (!isFileCharNum(str)) {
alert(label_name+" input invalid,Please input number or letter!");
return false;
}
return true;
}
function chkAlias(field_name,label_name,defaultEmpty) {
if (typeof(defaultEmpty) == "undefined") defaultEmpty = true;
var s = field_name.value;
if(isEmpty(s)) {
if (!defaultEmpty) {
field_name.focus();
field_name.style.background=fieldbg;
alert ("Please input " + label_name);
return false;
} else return true;
}
if (!isValid(s)) {
field_name.focus();
field_name.style.background=fieldbg;
alert(label_name+" input invalid,Can not input x12345/xx12345/xxx12345.");
return false;
}
return true;
}
function isValid(s){
if(s.length<=3) return false;
if(s.length>1){
var a=s.substring(0,1);
var b=s.substring(1);
if(isChar(a)&&isNum(b)) return false;
}
if(s.length>2){
var a=s.substring(0,2);
var b=s.substring(2);
if(isChar(a)&&isNum(b)) return false;
}
if(s.length>3){
var a=s.substring(0,3);
var b=s.substring(3);
if(isChar(a)&&isNum(b)) return false;
}
if(isNum(s)) return false;
return true;
}

function isChar(s) {
var str = /^[a-zA-Z]*$/;
return (str.test(s));
}
function chkBirthday(field_name,label_name,defaultEmpty) {
if (typeof(defaultEmpty) == "undefined") defaultEmpty = true;
var s = field_name.value;
if(isEmpty(s)) {
if (!defaultEmpty) {
field_name.focus();
field_name.style.background=fieldbg;
alert ("Please input " + label_name);
return false;
} else return true;
}
if (!isValidBirthday(s)) {
field_name.focus();
field_name.style.background=fieldbg;
alert(label_name+" input invalid,Please input as yyyymmdd.");
return false;
}
return true;
}