<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style type="text/css">
</style>
</head>
<body>
设置文本框不可用或可用:
<input type="text" value="" id="txtEditable" name="txtEditable" />
<input type="button" value="设置文本框不可用" onclick="enableDisableAttribute()" />
<input type="button" value="设置文本框可用" onclick="enitableAttribute()" />
</body>
<script type="text/javascript">
function enableDisableAttribute(){
var txtEditable = document.getElementById("txtEditable");
txtEditable.setAttribute("disabled", true);
}
function enitableAttribute(){
var txtEditable = document.getElementById("txtEditable");
txtEditable.removeAttribute("disabled");
}
</script>
</html>