Add a new line after text has been added to a textbox

Question

I am populating a textbox using the code below. I would like to make the textbox multiline and every time the code is executed it appends the new text to a new line.

Is there a way to do this using the code below?

  <script language="javascript" type="text/javascript">
    function getSelected(source, eventArgs) {
        var s = $get("<%=NameTextBox.ClientID %>").value;
        document.getElementById('<%= NPTextBox.ClientID %>').value = s.substring(s.length - 10);
    }
</script>

Have you tried `.value = s.substring(s.length - 10) & vbcrlf);` — Don Thomas Boyle, Sep 09 '13 at 18:24
Sorry I assumed since it was vb code it would work, my last attempt is for you to try `\n'` like in this post , http://stackoverflow.com/questions/5758161/how-do-i-create-a-new-line-in-javascript.... hope this helps. So Possibly after your `document.GetElement` ... do `document.write("\n");` — Don Thomas Boyle, Sep 09 '13 at 18:44
I tried that and its throwing errors I added the document.write("\n"); after my last line — user1342164, Sep 09 '13 at 18:58
Tried that as well, I get the error Microsoft JScript runtime error: Unable to get value of the property 'value': object is null or undefined — user1342164, Sep 09 '13 at 19:01

Karl Anderson · Accepted Answer · 2013-09-09T19:01:25.783

4

Use the newline character ('\n'), like this:

<script language="javascript" type="text/javascript">
    function getSelected(source, eventArgs) {
        var s = $get("<%=NameTextBox.ClientID %>").value;
        document.getElementById('<%= NPTextBox.ClientID %>').value += s.substring(s.length - 10) + '\n';
    }
</script>

edited Sep 09 '13 at 19:01

answered Sep 09 '13 at 18:45

Karl Anderson

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Just like he's saying here , @user1342164 – Don Thomas Boyle Sep 09 '13 at 18:47
Thanks when I try the it just replaces the previous text so another words the second result replaces the first? instead of just having 2 items listed – user1342164 Sep 09 '13 at 18:51
1

You need to append the result of `s.substring(s.length - 10) + '\n';`, see updated answer. – Karl Anderson Sep 09 '13 at 19:01
Thank you Karl, I appreciate the help – user1342164 Sep 09 '13 at 19:03
No problem, feel free to up-vote the answer if you have not already. :-) – Karl Anderson Sep 09 '13 at 19:04

Add a new line after text has been added to a textbox

1 Answers1