分享程序员开发的那些事...
更新时间：2023-11-07 16:36:46
您无法直接访问它（你的方式）。但是，它可以使用AJAX完成。
这是一个完美的解决方案。
You cannot access it directly (the way you are doing). However, it can be done using AJAX. Here is the perfectly working solution.
这是HTML：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>1</title>
</head>
<body>
<form id="form1" name="form1" method="post" action="">
<label for="websites1">Websites</label>
<select name="websites1" id="websites1">
<option value="Design">Design</option>
<option value="Dev">Dev</option>
<option value="Ecom">Ecom</option>
</select>
</form>
<script type="text/javascript" src="js/jquery_1.7.1_min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
function languageChange()
{
var lang = $('#websites1 option:selected').val();
return lang;
}
$('#websites1').change(function(e) {
var lang = languageChange();
var dataString = 'lang=' + lang;
$.ajax({
type: "POST",
url: "pass_value.php",
data: dataString,
dataType: 'json',
cache: false,
success: function(response) {
alert(response.message);
}
});
return false;
});
});
</script>
</body>
</html>
以下是AJAX部分：
//pass_value.php
<?php session_start();
$_SESSION['SESS_LANGUAGE'] = $_POST['lang'];
$_SESSION['SESS_LANGUAGE'] = 'This is my PHP session var --->'.$_SESSION['SESS_LANGUAGE'];
print json_encode(array('message' => $_SESSION['SESS_LANGUAGE']));
die();
?>
编辑1：
运行代码后，只需从下拉菜单中选择任何其他选项，您将收到一条警报，提供php会话变量的值以及我添加到其中的自定义文本。
Once you run the code, simply select any of the other options from the dropdown menu and you will receive an alert that gives you the value of the php session variable along with the custom text that I added to it.
编辑2：
如果您想在最后运行我的解决方案，请确定你正确指向核心jQuery js文件。我的jquery代码指向 src =js / jquery_1.7.1_min.js。请务必更新。
If you want to run my solution on your end, make sure you point to core jQuery js file correctly. My jquery code points to src="js/jquery_1.7.1_min.js". Make sure you update this.