問題描述
我目前正在使用 jquery-form-observe 插件使用 onbeforeunload 提示用戶有關未保存"的更改.
I'm currently using the jquery-form-observe plugin which uses onbeforeunload to prompt the user about "unsaved" changes.
但是我有一個場景,我需要在單擊按鈕時觸發它:按鈕單擊最終會導致頁面更改,但我想在用戶開始按鈕單擊開始的過程之前提示他們...
But I have a scenario where I need to trigger this on a button click: the button click ultimately leads to the page changing, but I want to prompt the user before they start the process that the button click kicks off...
那么有沒有辦法通過jQuery或其他方式觸發onb??eforeunload?
So is there a way to trigger onbeforeunload through jQuery or otherwise?
推薦答案
我不知道是否有直接的方法可以做到這一點,但你總是可以自己模擬瀏覽器的確認框.這是我根據 規范在MSDN:
I don't know if there is a direct way to do this, but you could always emulate the browser's confirmation box yourself. Here's a simple function I cooked up based on the specs at MSDN:
function triggerBeforeUnload() {
var event = {};
handler(event);
if (typeof event.returnValue == 'undefined' ||
confirm('Are you sure you want to navigate away from this page?
' + event.returnValue + '
Press OK to continue, or Cancel to stay on the current page.')) {
// Continue with page unload
} else {
// Cancel page unload
}
}
在jquery.formobserver.js
中,在function beforeunload(e) { ... }
的定義之后,添加這一行:
In jquery.formobserver.js
, right after the definition of function beforeunload(e) { ... }
, add this line:
handler = beforeunload;
注意原代碼的變化:window.onbeforeunload
已經被handler
代替了.
Note the change in the original code: window.onbeforeunload
has been replaced by handler
.
這篇關于是否可以以編程方式觸發 onbeforeunload 事件?的文章就介紹到這了,希望我們推薦的答案對大家有所幫助,也希望大家多多支持html5模板網!