几个有用的javascript验证脚本
function isNum(num,low,hi) {
if(isNaN(num)||num<low||num>hi)return false;
return true;
}function isValidIP(v) {
nums=v.split(".");
if(nums.length!=4)return false;
for(j=0;j<4;j++){
if(!isNum(nums[j],0,255))return false;
}
return true;
}function checkIP(Object,Desc,MaybeEmpty)
{
var strValue= Object.value;
if(MaybeEmpty){
if(strValue.length ==0){
return true;
}
}
if(isValidIP(strValue)==false)
{
alert(Desc + " Format Error!");
Object.focus();
return false;
}
return true;
}function checkPort(Object,Desc,lowest,MaybeEmpty)
{var pattern=/^d{4,5}$/;
var strValue= Object.value;
if(MaybeEmpty){
if(strValue.length ==0){
return true;
}
}
if(strValue.match(pattern) == null)
{
alert(Desc + " Format Error!");
Object.focus();
return false;
}
if (strValue<lowest || strValue >65535)
{
alert(Desc + " Format Error!");
Object.focus();
return false;
}
return true;
}
function checkFitLongStr(Object,Desc,MaybeEmpty)
{var pattern=/^S{0,25}$/;
var strValue= Object.value;
if(MaybeEmpty){
if(strValue.length ==0){
return true;
}
}
if(strValue.match(pattern) == null)
{
alert(Desc + " Format Error!");
Object.focus();
return false;
}
return true;
}function checkFitLongNum(Object,Desc,MaybeEmpty)
{var pattern=/^d{0,8}$/;
var strValue= Object.value;
if(MaybeEmpty){
if(strValue.length ==0){
return true;
}
}
if(strValue.match(pattern) == null)
{
alert(Desc + " Format Error!");
Object.focus();
return false;
}
return true;
}function checkGC(Object,Desc)
{
var pattern = /^-{0,1}d{1,2}$/
var strValue = Object.value;
if (strValue.length ==0){
return true;
}
if(strValue.match(pattern) == null)
{
alert(Desc + " Format Error!");
Object.focus();
return false;
}
if (strValue < -12 ||strValue > 18)
{
alert(Desc + " Format Error!");
Object.focus();
return false;
}
return true;
}
补充:web前端 , JavaScript ,