将 jQuery $.post() 中的缓存设置为 false？
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Setting the cache in jQuery $.post() to be false?
提问by AKor
I have this code:
我有这个代码：
$.post("php/tagNotifUnsub.php", $("#tagNotifUnsub").serialize(), function(){
$('#tagSubDiv').load('tags.php #tagSubDiv', function(){$( "button, input:submit, input:button, a#jql, input:radio" ).button();});
});
I understand that $.post is just another name for $.ajax. And I know $.ajax has caching on by default. I want it to be uncached. How can I do that?
我知道 $.post 只是 $.ajax 的另一个名字。而且我知道 $.ajax 默认情况下有缓存。我希望它不被缓存。我怎样才能做到这一点？
回答by Daniel A. White
$.postis not cached.
$.post没有缓存。
Pages fetched with POST are never cached, so the cache and ifModified options in jQuery.ajaxSetup() have no effect on these requests.
使用 POST 获取的页面永远不会被缓存，因此 jQuery.ajaxSetup() 中的缓存和 ifModified 选项对这些请求没有影响。
回答by Elias
Partly right, Daniel A. White!
On devices running iOS6 and Safari, POST is also cached.
在运行 iOS6 和 Safari 的设备上，POST 也会被缓存。
What you can do is the following:
您可以执行以下操作：
$.ajaxSetup({
type: 'POST',
headers: { "cache-control": "no-cache" }
});
回答by Stretch
You mention $.ajax
你提到 $.ajax
You can turn caching off for ajax like this:
您可以像这样关闭 ajax 的缓存：
$.ajax({
url: "/myURL?",
cache: false,
});
回答by Sergei Nester
This is an old problem that seems to pop up from time to time and I am always scratching my head. This solution fixes the problem but it may not be suitable in all cases as it is in effect disabling a key feature of AJAX - The asynchronous feature. That said and done for the cases where I have had this problem - Apple products and Safari I'm looking at you especially- setting the additional parameter of async:falsein your jQuery AJAX request fixes the issue and actually solves the "No Alert on Post Callback" problem.
这是一个似乎不时出现的老问题，我总是在挠头。此解决方案解决了该问题，但它可能并不适用于所有情况，因为它实际上禁用了 AJAX 的一个关键功能 - 异步功能。对于我遇到此问题的情况-Apple 产品和 Safari 我特别关注您-async:false在您的 jQuery AJAX 请求中设置附加参数可修复该问题并实际解决了“无后回调警报”的问题问题。
As I said if you absolutely rely on asynchronous functionality then this is not going to help you, but for many projects it will stop you pulling your hair out.
正如我所说，如果您绝对依赖异步功能，那么这对您没有帮助，但对于许多项目，它会阻止您拔毛。
$.ajax({
type: 'POST',
url: url,
data: data,
success: success,
dataType: dataType,
async:false
});
