从 PHP 设置 JavaScript 变量
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Set JavaScript variable from PHP
提问by user2627035
How I can set the JavaScript variable strUser from PHP?
如何从 PHP 设置 JavaScript 变量 strUser？
I am using the following code:
我正在使用以下代码：
<script>
function val()
{
var e = document.getElementById("ali");
var strUser = e.options[e.selectedIndex].text;
}
</script>
brand<select id="ali" onChange="val()">
<?php
$brand=modsearchkhodroHelper::retrieve();
foreach($brand as $item)
{
?>
<option value="<?php echo $item['brand']?>" selected="<?php $id=$item['brand']?>">
<?php echo $item['brand']?>
</option>
<?php
}
echo "</select>";
?>
回答by Joshua Dwire
If you want to set the variable when the page loads, you could use something like this in the PHP code:
如果你想在页面加载时设置变量，你可以在 PHP 代码中使用这样的东西：
<script type="text/javascript">var strUser = <?php echo json_encode($someVariable); ?>;</script>
Just make sure to remove the later variable declaration from the JavaScript.
只需确保从 JavaScript 中删除后面的变量声明即可。
If you want to set the variable after the page loads, you'll have to use an AJAX call to ge the value from the server.
如果要在页面加载后设置变量，则必须使用 AJAX 调用从服务器获取值。
回答by Nathan Srivi
Use Cookie in your javascript
在 JavaScript 中使用 Cookie
<script type="text/javascript">
document.cookie = "cookieName=cookieValue";
</script>
in your php
在你的 php
<?php
$phpVar = $_COOKIE['cookieName'];
echo $phpVar;
?>
