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  1. #1
    SitePoint Member
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    May 2012
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    Password field validation

    Hi,
    I have a password field which must contain at least one (1) UPPER CASE letter, one (1) LOWER CASE letter, one (1) numeric DIGIT: (0,1,2,3,4,5,6,7,8,9), one of the special characters (!@#$%^&+_|~-=\{}[]:?/),not contain more than 2 identical consecutive characters (AAA, iiii, $$$$$ ...) and at least 8 characters long
    Eg: TbM&htr1.
    I am trying to do the above by the following:
    function validate( str ) {
    var i = 0, c;

    while( c = str.charAt( i++ ) )
    {
    if( c === str.charAt(i) &&
    c === str.charAt(i+1)
    ) {
    return false;
    }
    }
    return true;
    }


    function validateChangePassword(){
    var oldPass = document.getElementById('ed_pass').value;
    var newPass = document.getElementById('ed_pass_new').value;
    var cPass = document.getElementById('ed_cpass_new').value;
    var re = /^(?=.*\d)(?=.*[a-z])(?=.*[A-Z])/;
    if(oldPass == ''){
    alert("Please provide your old password.");
    document.change_pass.ed_pass.focus();
    return false;
    }
    if(newPass == ''){
    alert("Please type new password.");
    document.change_pass.ed_pass_new.focus();
    return false;
    }
    else if(newPass != ''){
    if(validate(newPass) === false){
    alert("Cannot consecutive character...");
    document.change_pass.ed_pass_new.focus();
    return false;
    }
    }

    if(newPass.length < 8){
    alert("New password should be more than 8 characters in length.");
    document.change_pass.ed_pass_new.focus();
    return false;
    }
    if(newPass != cPass ){
    alert("Confirm password is not matching, please type correct one.");
    document.change_pass.ed_cpass_new.focus();
    return false;
    }
    }
    But by these two functions, I am unable to validate the mandatory special characters (!@#$%^&+_|~-=\{}[]:?/). Please help me how to do that.

    Thanks in advance.

  2. #2
    SitePoint Member
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    doubt


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