/* This is the source code for the validation function. Add the following code just after the in the files where the generalised validation functionality is required. */ /* * File : formValidation.js * * */ //---------------------------------EMail Check ------------------------------------ /* checks the validity of an email address entered * returns true or false * */ function validateEmail(email) { // a very simple email validation checking. // you can add more complex email checking if it helps var splitted = email.match("^(.+)@(.+)$"); if(splitted == null) return false; if(splitted[1] != null ) { var regexp_user=/^\"?[\w-_\.]*\"?$/; if(splitted[1].match(regexp_user) == null) return false; } if(splitted[2] != null) { var regexp_domain=/^[\w-\.]*\.[A-Za-z]{2,4}$/; if(splitted[2].match(regexp_domain) == null) { var regexp_ip =/^\[\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\]$/; if(splitted[2].match(regexp_ip) == null) return false; }// if return true; } return false; } /* function validateData * Checks each field in a form * Called from validateForm function */ function validateData(strValidateStr,objValue,strError) { var epos = strValidateStr.search("="); var command = ""; var cmdvalue = ""; if(epos >= 0) { command = strValidateStr.substring(0,epos); cmdvalue = strValidateStr.substr(epos+1); } else { command = strValidateStr; } switch(command) { case "req": case "required": { if(eval(objValue.value.length) == 0 || objValue.value==objValue.id) { if(!strError || strError.length ==0) { strError = objValue.name + ": Campo obligatorio"; }//if alert(strError); return false; }//if break; }//case required case "maxlength": case "maxlen": { if(eval(objValue.value.length) > eval(cmdvalue)) { if(!strError || strError.length ==0) { strError = objValue.name + " : "+cmdvalue+" caracteres máximo "; }//if alert(strError + "\n[núm. caracteres = " + objValue.value.length + " ]"); return false; }//if break; }//case maxlen case "minlength": case "minlen": { if(eval(objValue.value.length) < eval(cmdvalue)) { if(!strError || strError.length ==0) { strError = objValue.name + " : " + cmdvalue + " caracteres mínino "; }//if alert(strError + "\n[núm. caracteres = " + objValue.value.length + " ]"); return false; }//if break; }//case minlen case "alnum": case "alphanumeric": { var charpos = objValue.value.search("[^A-Za-z0-9]"); if(objValue.value.length > 0 && charpos >= 0) { if(!strError || strError.length ==0) { strError = objValue.name+": Sólo caracteres alfanuméricos "; }//if alert(strError + "\n [Posición del error " + eval(charpos+1)+"]"); return false; }//if break; }//case alphanumeric case "num": case "numeric": { var charpos = objValue.value.search("[^0-9]"); if(objValue.value.length > 0 && charpos >= 0) { if(!strError || strError.length ==0) { strError = objValue.name+": Sólo caracteres numéricos "; }//if alert(strError + "\n [Posición del error " + eval(charpos+1)+"]"); return false; }//if break; }//numeric case "alphabetic": case "alpha": { var charpos = objValue.value.search("[^A-Za-z]"); if(objValue.value.length > 0 && charpos >= 0) { if(!strError || strError.length ==0) { strError = objValue.name+": Sólo caractes alfabéticos "; }//if alert(strError + "\n [Posición del error " + eval(charpos+1)+"]"); return false; }//if break; }//alpha case "email": { if(!validateEmail(objValue.value)) { if(!strError || strError.length ==0) { strError = objValue.name+": Dirección email no válida "; }//if alert(strError); return false; }//if break; }//case email case "lt": case "lessthan": { if(isNaN(objValue.value)) { alert(objValue.name+": Debe ser un número "); return false; }//if if(eval(objValue.value) >= eval(cmdvalue)) { if(!strError || strError.length ==0) { strError = objValue.name + ": El valor debe ser menor que "+ cmdvalue; }//if alert(strError); return false; }//if break; }//case lessthan case "gt": case "greaterthan": { if(isNaN(objValue.value)) { alert(objValue.name+": Debe ser un número "); return false; }//if if(eval(objValue.value) <= eval(cmdvalue)) { if(!strError || strError.length ==0) { strError = objValue.name + ": El valor debe ser mayor que "+ cmdvalue; }//if alert(strError); return false; }//if break; }//case greaterthan case "regexp": { if(!objValue.value.match(cmdvalue)) { if(!strError || strError.length ==0) { strError = objValue.name+": Caracteres no válidos "; }//if alert(strError); return false; }//if break; }//case regexp case "dontselect": { if(objValue.selectedIndex == null) { alert("BUG: dontselect command for non-select Item"); return false; } if(objValue.selectedIndex == eval(cmdvalue)) { if(!strError || strError.length ==0) { strError = "Seleccione "+objValue.name; }//if alert(strError); return false; } break; }//case dontselect case "": { break; } }//switch return true; } /* * function validateForm * the function that can be used to validate any form * returns false if the validation fails; true if success * arguments : * objFrm : the form object * arrObjDesc : an array of objects describing the validations to conduct on each * input item. * The array should consist of one object per input item in the order the input * elements are present in the form. Each object consist of zero or more validation * objects. Each of these validation object is a pair consisting of the validation * descriptor string and an optional Error message. */ function validateForm(objFrm,arrObjDesc) { for(var itrobj=0; itrobj < arrObjDesc.length; itrobj++) { if(objFrm.elements.length <= itrobj) { alert("BUG: Obj descriptor for a non existent form element"); return false; }//if for(var itrdesc=0; itrdesc < arrObjDesc[itrobj].length ;itrdesc++) { if(validateData(arrObjDesc[itrobj][itrdesc][0], objFrm[itrobj],arrObjDesc[itrobj][itrdesc][1]) == false) { objFrm[itrobj].focus(); return false; }//if }//for }//for }