# Disable txt field

**URL:** <https://forum.kirupa.com/t/disable-txt-field/241290>\
**Category:** Uncategorized\
**Created:** [October 11, 2007, 8:36pm UTC](https://forum.kirupa.com/t/disable-txt-field/241290 "2007-10-11T20:36:50Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![james182](https://avatars.discourse-cdn.com/v4/letter/j/278dde/32.png) [@james182](https://forum.kirupa.com/u/james182)\
**Post date:** [October 11, 2007, 8:36pm UTC](https://forum.kirupa.com/t/disable-txt-field/241290/1 "2007-10-11T20:36:50Z")

</div>

i need to disable selected txt fields

```auto

<html>
<head>
<script type="text/javascript">
function disableField(element_id))){
  document.getElementById(element_id))).disabled=true
 }
</script>
</head>
<body>

<form>
s <input type="text" id="startWhen" value="" onclick="disableField(hours)"/>
f <input type="text" id="finishWhen" value="" onclick="disableField("hours")"/>
-or- hr <input type="text" id="hours" value="" onclick="disableField("startWhen","finishWhen")"/>
</form>

</body>
</html>

```
