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Asked: 2026-05-10T17:33:31+00:00

I have a textarea with many lines of input, and a JavaScript event fires

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I have a textarea with many lines of input, and a JavaScript event fires that necessitates I scroll the textarea to line 345.

scrollTop sort of does what I want, except as far as I can tell it’s pixel level, and I want something that operates on a line level. What also complicates things is that, afaik once again, it’s not possible to make textareas not line-wrap.

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  1. You can stop wrapping with the wrap attribute. It is not part of HTML 4, but most browsers support it.
    You can compute the height of a line by dividing the height of the area by its number of rows.

    <script type="text/javascript" language="JavaScript"> function Jump(line) {   var ta = document.getElementById("TextArea");   var lineHeight = ta.clientHeight / ta.rows;   var jump = (line - 1) * lineHeight;   ta.scrollTop = jump; } </script>  <textarea name="TextArea" id="TextArea"    rows="40" cols="80" title="Paste text here"   wrap="off"></textarea> <input type="button" onclick="Jump(98)" title="Go!" value="Jump"/>

    Tested OK in FF3 and IE6.

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