anyone any good at javascript regex?
i'm trying to add validation on an html form field, all is fine except for one particular field.
this field only requires a value when the preceeding form field is answered as "YES", and when it is required it can only be numbers (0-9).
at the moment i have it split across two checks - which obviously isn't ideal.
the first check works but the second check is kicking in even when the answers is "NO" on the preceeding field.
if ((x7 == "YES") && (x7b == null || x7b == "")) {
alert("Heat Control Estimated LTS must be entered");
return false;
}
if ( (x7 == "YES") && (/^[0-9]+$/.test(x7b)) ){
} else {
alert("Invalid Heat Control Estimated LTS; must only be numbers");
return false;
}
so 1) can i combine the check into one? and 2) why is the second check not working as expected?
