JavaScript Substring

I don't see this topic on the Design Studio

There are some excellent online tutorials on using javascript that can be found with google. If you want to jump straight into how substring works you can search with google for "javascript substring" and the first link is probably what you are looking for. For debugging you can add in alerts to your code to see what you are doing. For example

alert('Hello World');

Assuming you're using the Form/UI Designer, you would do something like this in the FORM_OnAfterTransaction event:
lawForm.getDataValue("FICA-NBR").substring(7,11)

The textBox still does not show the last 4 only...it shows the whole field


function FORM_OnAfterTransaction(data)
{
lawForm.getDataValue("text168").substring(7,11) ;
alert('Hello');
}

Parsing data - see my blog: http://consultdavidw.blog...07/parsing-data.html
A great source for JavaScript is: http://www.w3schools.com/js/

The code John has just gets the four digits. Try something like this out and it will probably give you a better understanding.

var str = lawForm.getDataValue("FICA-NBR").substring(7,11);
alert('The four digits are ' + str);

What you may want to do is:

1. Hide the original SSN field
2. Add in a new field.
3. Use substring to get the last four digits out of the hidden SSN field.
4. Put the last four digits into the new field.

You would need to use lawForm.setFormValue or lawForm.setDataValue in order to actually make the form show that...something like (off the top of my head):
lawForm.setDataValue("FICA-NBR",lawForm.getDataValue("text168").substring(7,11))

I agree with Jay,  you do not want to use the setDataValue or setFormValue if the Change function is available because it will try to update the SSN with the truncated number.

It is better to create a new field and display the truncated value of the SSN number in it.

How can I put the last 4 in the field? I can get them in an alert but the text box is empty...


function FORM_OnAfterTransaction(data)
{
//var str = lawForm.getDataValue("EMP-FICA-NBR").substring(7,11);


str = lawForm.setDataValue("EMP-FICA-NBR",lawForm.getDataValue("text168").substring(7,11));
document.text168.value = str;


//alert('The four digits are ' + str);
}

What I think Gary is saying is you probably don't want to use setDataValue on the original SSN field but instead use setDataValue on a new field that you have created.

Hopefully the syntax here close to being correct.

strFourDigitsOfSSN = lawForm.getDataValue("text168").substring(7,11));

alert('I got the four digits ' + strFourDigitsOfSSN);

lawform.SetDataValue("YOUR_NEW_FIELD_THAT_YOU_HAVE_CREATED"),strFourDigitsOfSSN);

I'm able to get the 4 digits in the alert box, but not in the textbox.

'lawform undefined.

Javascript is case sensitive. It is probably 'lawForm' instead of 'lawform'. It looks like you are very new to programming in javascript. If you are interested in programming I would encourage you to continue. You may want to pick up a javascript book and read through it. Good Luck.