function checkRequired(frmData) { var bFail; bFail = false; // Default to pass for(iElement = 0; iElement < frmData.elements.length; iElement++) { if(frmData.elements[iElement].className == 'RequiredTextBox' || frmData.elements[iElement].className == 'FailedTextBox') { if(frmData.elements[iElement].value == '') { bFail = true; frmData.elements[iElement].className = 'FailedTextBox'; } else { frmData.elements[iElement].className = 'RequiredTextBox'; } } if(frmData.elements[iElement].className == 'RequiredTextArea' || frmData.elements[iElement].className == 'FailedTextArea') { if(frmData.elements[iElement].value == '') { bFail = true; frmData.elements[iElement].className = 'FailedTextArea'; } else { frmData.elements[iElement].className = 'RequiredTextArea'; } } } if(bFail){ alert(document.getElementById('alertMessage').value);} return !bFail; } function checkForm() { if(!checkRequired(document.forms['frmCheckMe'])) { if(document.all) { document.all.spanError.innerText = document.getElementById('alertMessage').value; } else { document.getElementById('spanError').innerHTML = document.getElementById('alertMessage').value; } } else { document.forms['frmCheckMe'].submit(); } } function checkEmail(emField,eMailFailMessage){ //reference to email field passed as argument var fieldValue = emField.value // store field's entire value in variable // Begin Valid Email Address Tests //if field is not empty if(fieldValue != ""){ var atSymbol = 0 //loop through field value string for(var a = 0; a < fieldValue.length; a++){ //look for @ symbol and for each @ found, increment atSymbol variable by 1 if(fieldValue.charAt(a) == "@"){ atSymbol++ } } // if more than 1 @ symbol exists if(atSymbol > 1){ // then cancel and don't submit form alert(eMailFailMessage) return false } // if 1 @ symbol was found, and it is not the 1st character in string if(atSymbol == 1 && fieldValue.charAt(0) != "@"){ //look for period at 2nd character after @ symbol var period = fieldValue.indexOf(".",fieldValue.indexOf("@")+2) // "." immediately following 1st "." ? var twoPeriods = (fieldValue.charAt((period+1)) == ".") ? true : false //if period was not found OR 2 periods together OR field contains less than 5 characters OR period is in last position if(period == -1 || twoPeriods || fieldValue.length < period + 2 || fieldValue.charAt(fieldValue.length-1)=="."){ // then cancel and don't submit form alert(eMailFailMessage) return false } } // no @ symbol exists or it is in position 0 (the first character of the field) else{ // then cancel and don't submit form alert(eMailFailMessage) return false } } // if field is empty else{ // then cancel and don't submit form alert(eMailFailMessage) return false } //all tests passed, submit form return true }