java script to show last lines of textarea

[modelpatel]

Hi every one,

I have a question regarding the lastline in Textarea. I am have build a chat application using the textarea to display the typed messages. Every thing is working fine except once the text range is out of the textarea size I have to scroll down to check for the new messages. Can anyone help me to display the last lines of in textarea always using javascript.


Thanks & Regards,

Bharat

[gits]

hi ...

have a look at the following example:

var n   = document.getElementById('your_message_text_area_id');
var end = n.lastChild.offsetTop;
window.scrollTo(0, end);

so we refer to the div where you output the messages, and then we refer to its last added child ... and then we scroll to its top position ... note: i assume that it is a div where you assign the messages to? typically you have an input area (to type in) below or before an readonly messages-output 'window' (where the recent messages appear)?

kind regards

[srinivasanm]

HI,

I hope below things will work for you.

obj = document.getElementById(divid);
        var currentScrollHeight = obj.scrollHeight;
        obj.scrollTop = (obj.scrollTop + 100000); //set the scroll height to scroll by here.

srini