Validations

Special Charecters: var iChars = "!@#$%^&*()+=-[]\\\';,./{}|\":<>?"; for (var i = 0; i < document.formname.fieldname.value.length; i++) { if (iChars.indexOf(document.formname.fieldname.value.charAt(i)) != -1) { alert ("Your username has special characters. \nThese are not allowed.\n Please remove them and try again."); return false; } } -----------------------------------------------------------Alpha , Numeric & Special Charecter <script language="javascript"> function isStrongPassword() { var control = document.form1.password; var myString= control.value; var Stringlen = myString.length; var ValidateDigits = /[^0-9]/g; var ValidateSpChar = /[a-zA-Z0-9]/g; var ValidateChar = /[^a-zA-Z]/g; var digitString = myString.replace(ValidateDigits , ""); var specialString = myString.replace(ValidateSpChar, ""); var charString = myString.replace(ValidateChar, ""); if(Stringlen < 8) { alert("Passwords must be at least 8 characters"); control.value=""; control.focus(); return false; } if(specialString < 1) { alert("Passwords must include at least 1 special (#,@,&,$ etc) characters"); control.value=""; control.focus();

return false; } if(digitString < 1) { alert("Passwords must include at least 1 numeric characters"); control.value=""; control.focus(); return false; } return; }

Registration

Login:
Password:

-----------------------------------------<script language="JavaScript">

E-Mail format checking script.

-------------------------------------------------------------------------------if (document.formname.fieldname.value.length >0) { i=document.formname.fieldname.value.indexOf("@") j=document.formname.fieldname.value.indexOf(".",i) k=document.formname.fieldname.value.indexOf(",") kk=document.formname.fieldname.value.indexOf(" ") jj=document.formname.fieldname.value.lastIndexOf(".")+1 len=document.formname.fieldname.value.length if ((i>0) && (j>(1+1)) && (k==-1) && (kk==-1) && (len-jj >=2) && (lenjj<=3)) { } else { alert("Please enter an exact email address.\n" + document.formname.fieldname.value + " is invalid."); return false; } } Check if field has special characters. -------------------------------------------------------------------------------var iChars = "!@#$%^&*()+=-[]\\\';,./{}|\":<>?"; for (var i = 0; i < document.formname.fieldname.value.length; i++) { if (iChars.indexOf(document.formname.fieldname.value.charAt(i)) != -1) { alert ("Your username has special characters. \nThese are not allowed.\n Please remove them and try again."); return false; } } Check if certian radio buttons have not been selected. -------------------------------------------------------------------------------if (!document.formname.fieldname[0].checked && !document.formname.fieldname[1].checked && !document.formname.fieldname[2].checked && !document.formname.fieldname[3].checked) { alert("Please choose a group designation.\n");

return false; } Check if textbox has any characters in it. -------------------------------------------------------------------------------if (document.formname.fieldname.value.length == 0) { alert("Please fill out your name.\n"); return false; } Check if multiple checkboxes have not been selected.Replace false with true to see if all are selected. -------------------------------------------------------------------------------if (document.formname.fieldname.checked == false && document.formname.fieldname.checked == false && document.formname.fieldname.checked == false) { alert("Please select at least one checkbox.\n"); return false; } Check drop down has been selected. Set drop down's value to Not_Selected for this to work. -------------------------------------------------------------------------------if (document.formname.fieldname.value == 'Not_Selected') { alert("Please provide us with a selection.\n"); return false; } Scan values in a field and if they are all letters then alert. The second block of code does the same but for numbers -------------------------------------------------------------------------------//alert on finding all letters var noalpha = /^[a-zA-Z]*$/;

if (noalpha.test(document.formname.fieldname.value)) { alert("Please enter at least one number in the \"username\" field."); return false; } //alert on finding all numbers var nonums = /^[0-9]*$/; if (nonums.test(document.formname.fieldname.value)) { alert("Please enter at least one letter in the \"username\" field."); return false; } Remove special characters from a string. -------------------------------------------------------------------------------function clearText() { document.formname.fieldname.value=filterNum(document.formname.fieldname.valu e) function filterNum(str) { re = /\$|, ~|`|\%|\*|\^|\&|\(|\)|\+|\=|\[|\-|\_|\]|\[|\}|\{|\;|\:|\'|\"|\<|\>|\?|\||\\|\!|\$|\./g; // remove special characters like "$" and "," etc... return str.replace(re, ""); } } Detect special characters in text box. Or any character you subsitute for the special characters. -------------------------------------------------------------------------------var iChars = "!@#$%^&*()+=-[]\\\';,./{}|\":<>?"; for (var i = 0; i < document.formname.fieldname.value.length; i++) { if (iChars.indexOf(document.formname.fieldname.value.charAt(i)) != -1) { alert ("The box has special characters. \nThese are not allowed.\n"); return false; } }