//--------------------------------------------------------------------------------- // This javascript function checks for a blank/empty form field. If blank alert // the user. //--------------------------------------------------------------------------------- function chkBlank(textObj) { if(textObj.value.length < 1) { alert("Required field! Please enter information in the highlighted field."); textObj.style.backgroundColor='#FFFF63'; textObj.focus() return (true); } textObj.style.backgroundColor='#FFFFFF'; return (false); } //---------------------------------------------------------------------- // This function checks the form field ensuring only ALPHA (text) // characters are entered with the exception of the 'extraChars' that // are explicitly listed. //---------------------------------------------------------------------- function isString(textObj, c) { var chars = c var newValue = textObj.value var newLength = newValue.length var extraChars = "'.-óñãáíúçéàõ" + chars //pass chars to the var 'c' you wish not be checked var search for (var i = 0; i != newLength; i++) { aChar = newValue.substring(i,i+1) aChar = aChar.toUpperCase() search = extraChars.indexOf(aChar) if (search == -1 && (aChar < "A" || aChar > "Z")) { alert("You've entered an invalid character in the highlighted field."); textObj.style.backgroundColor='#FFFF63'; textObj.focus() return false; break; } } return (true); } //------------------------------------------------------------------------------------------ // This Javascript function ensures the form field value are integers only. // Anything else produces an error and requires the user to re-enter valid information. //------------------------------------------------------------------------------------------ function isInt(textObj) { var newValue = textObj.value var newLength = newValue.length for(var i=0; i != newLength; i++) { aChar = newValue.substring(i,i+1) if(aChar < "0" || aChar > "9") { alert("You've entered an invalid character in the highlighted field."); textObj.style.backgroundColor='#FFFF63'; textObj.focus() return false; break; } } return true; } //------------------------------------------------------------------------------------- // This javascript function checks for alpha-numeric entries and does not allow // extraneous characters to be entered such as: %$#()&* in the field. Alerts the user. //------------------------------------------------------------------------------------- function isAlphaNum(textObj) { var newValue = textObj.value var newLength = newValue.length var extraChars = "0123456789'.# " var search for (var i = 0; i != newLength; i++) { aChar = newValue.substring(i,i+1) aChar = aChar.toUpperCase() search = extraChars.indexOf(aChar) if (search == -1 && (aChar < "A" || aChar > "Z")) { alert("You've entered an invalid character, please correct."); textObj.style.backgroundColor='#FFFF63'; textObj.focus() return false; break; } } return (true); } //---------------------------------------------------------------------------------------- // Basic email validation javascript function. Checks for all normal entry errors. //---------------------------------------------------------------------------------------- function chkEmail(textObj) { var emailAddr = textObj.value var newLength = textObj.value.length if (newLength > 0) { if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test (emailAddr)){ return (true) } alert("Invalid e-Mail address. Please correct or re-Enter."); textObj.style.backgroundColor='#FFFF63'; textObj.focus() return (false) } textObj.style.backgroundColor='#FFFF63'; return (true) //blank field is ok, use chkBlank above for blank field validation } //----------------------------------------------------------------------------------------- // Phone number javascript validation using regular expressions. // this function check the entry for the following phone formats... // chk1 = (123)-456-7890 or (123) 456-7890 // chk2 = 123-456-7890 // chk3 = 1234567890 //----------------------------------------------------------------------------------------- function chkPhone(textObj) { var chk1 = /^\({1}([0-9]){3}\){1}(\s|\-){1}([0-9]){3}\-{1}([0-9]){4}$/ var chk2 = /^([0-9]){3}\-{1}([0-9]){3}\-{1}([0-9]){4}$/ var chk3 = /^([0-9]){10}$/ var pnum = textObj.value if ((chk1.test(pnum)) || (chk2.test(pnum)) || (chk3.test(pnum))) { return (true) } else if (pnum.length < 1) { return (true) } else { alert("Invalid Phone number entry. Please correct or re-Enter."); textObj.style.backgroundColor='#FFFF63'; textObj.focus() return (false) } } //-------------------------------------------------------------------------------- // this Javascript function composed of regular expressions verifies that the date // entered is valid. Either a 2 or 4 digit year can be entered in M/D/Y format (USA) //-------------------------------------------------------------------------------- function isValidDate(textObj, format) { var dateStr = textObj.value if (dateStr.length > 0) { //if not blank field then continue if (format == null) { format = "MDY"; } format = format.toUpperCase(); if (format.length != 3) { format = "MDY"; } if ((format.indexOf("M") == -1) || (format.indexOf("D") == -1) || (format.indexOf("Y") == -1) ) { format = "MDY"; } if (format.substring(0, 1) == "Y") { // If the year is first var reg1 = /^\d{2}(\-|\/|\.)\d{1,2}\1\d{1,2}$/ var reg2 = /^\d{4}(\-|\/|\.)\d{1,2}\1\d{1,2}$/ } else if (format.substring(1, 2) == "Y") { // If the year is second var reg1 = /^\d{1,2}(\-|\/|\.)\d{2}\1\d{1,2}$/ var reg2 = /^\d{1,2}(\-|\/|\.)\d{4}\1\d{1,2}$/ } else { // The year must be third var reg1 = /^\d{1,2}(\-|\/|\.)\d{1,2}\1\d{2}$/ var reg2 = /^\d{1,2}(\-|\/|\.)\d{1,2}\1\d{4}$/ } // If it doesn't conform to the right format (with either a 2 digit year or 4 digit year), fail if ((reg1.test(dateStr) == false) && (reg2.test(dateStr) == false)) { alert("You've entered an invalid date in the highlighted field."); textObj.style.backgroundColor='#FFFF63'; textObj.focus() return false; } var parts = dateStr.split(RegExp.$1); // Split into 3 parts based on what the divider was // Check to see if the 3 parts end up making a valid date if (format.substring(0, 1) == "M") { var mm = parts[0]; } else if (format.substring(1, 2) == "M") { var mm = parts[1]; } else { var mm = parts[2]; } if (format.substring(0, 1) == "D") { var dd = parts[0]; } else if (format.substring(1, 2) == "D") { var dd = parts[1]; } else { var dd = parts[2]; } if (format.substring(0, 1) == "Y") { var yy = parts[0]; } else if (format.substring(1, 2) == "Y") { var yy = parts[1]; } else { var yy = parts[2]; } if (parseFloat(yy) <= 30) { yy = (parseFloat(yy) + 2000).toString(); } if (parseFloat(yy) <= 99) { yy = (parseFloat(yy) + 1900).toString(); } var dt = new Date(parseFloat(yy), parseFloat(mm)-1, parseFloat(dd), 0, 0, 0, 0); if (parseFloat(dd) != dt.getDate()) { alert("You've entered an invalid date in the highlighted field."); textObj.style.backgroundColor='#FFFF63'; textObj.focus() return false; } if (parseFloat(mm)-1 != dt.getMonth()) { alert("You've entered an invalid date in the highlighted field."); textObj.style.backgroundColor='#FFFF63'; textObj.focus() return false; } textObj.style.backgroundColor='transparent'; return true; } return true; //if blank just continue, not a required field. }