我的应用程序包括一个文本字段和一个下拉框。当我选择“所有营销事件”时，我应该禁用我的文本字段，而当我选择“此营销事件”时，它应该保持启用状态。下面给出的代码仅供引用，但我没有收到任何错误或异常。请帮助我。
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>TextBoxDisabling</title>
<script type="text/javascript">
function findselected() {
document.getElementById('selmenu');
document.getElementById('txtField');
(state.value == "All Campaign") ? txtField.disabled = true
: txtField.disabled = false
}
</script>
</head>
<body>
<form action="" method="POST" name="form1">
<select name="selmenu"
onChange="findselected()">
<option value="1">This Campaign</option>
<option value="2">All Campaign</option>
</select> <input type="text" size="20" id="txtField" name="txtField"></form>
</body>
</html>
最佳答案
试试这个
<script type="text/javascript">
function findselected() {
var selMenu = document.getElementById('selmenu');
var txtField = document.getElementById('txtField');
if(selMenu.value == '2')
txtField.disabled = true
else
txtField.disabled = false
}
</script>
<form action="" method="POST" name="form1">
<select name="selmenu" id="selmenu" onChange="findselected()">
<option value="1">This Campaign</option>
<option value="2">All Campaign</option>
</select>
<input type="text" size="20" id="txtField" name="txtField">
</form>
关于javascript - 禁用下拉框中特定选择的文本字段，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/5512183/