javascript 使用 jQuery 获取 Servlet 会话属性
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Get Servlet session attributes using jQuery
提问by lxcky
I have a raffle button that's being enabled or disabled based on Session Attributes I've set using Servlets.
我有一个抽奖按钮，它根据我使用 Servlet 设置的会话属性启用或禁用。
It should be disabled if either of this is true
如果其中任何一个为真，则应禁用它
- the
enBancCountis equals to zero - It's not a valid day
- 该
enBancCount是等于零 - 这不是一个有效的日子
Here is my code:
这是我的代码：
<button id="raffleBtn" type="submit"
${sessionScope.enBancCount == 0 || !sessionScope.validDay ? 'disabled' : ''}>
Raffle
</button>
I'm currently using JSP EL to add the disabledattribute on the button based on the two conditions above. But now, before enabling it, I also have to check if majority attended on this raffle.
我目前正在使用 JSP ELdisabled根据上述两个条件在按钮上添加属性。但是现在，在启用它之前，我还必须检查是否大多数人都参加了这次抽奖活动。
I added the following input fields for checking the attendance:
我添加了以下输入字段来检查出勤情况：
<input type="checkbox" name="attendance" value=""> ATTENDEE 1
<input type="checkbox" name="attendance" value=""> ATTENDEE 2
<input type="checkbox" name="attendance" value=""> ATTENDEE ...
<input type="checkbox" name="attendance" value=""> ATTENDEE 6
And changed the html for the raffle button to:
并将抽奖按钮的 html 更改为：
<button id="raffleBtn" type="submit" disabled>
Raffle
</button>
And added the following JQuery code:
并添加了以下 JQuery 代码：
$('[name=attendance]').change(function() {
if ($('[name=attendance]:checked').length >= 4
&& // CONDITION IF ENBANC CASE IS NOT ZERO
&& // CONDITION IF IT'S A VALID DAY) {
$('#raffleBtn').removeAttr('disabled');
} else {
$('#raffleBtn').attr('disabled', 'disabled');
}
});
My only problem is that I don't know how to get the value of enBancCountand validDayusing JQuery.
我唯一的问题是我不知道如何获取enBancCount和validDay使用 JQuery的价值。
Please help?
请帮忙？
回答by Ken de Guzman
You can do like this
你可以这样做
var enBancAccount = "${sessionScope.enBancCount}";
var validDay = "${sessionScope.validDay}";
