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Safari <body onload> event doesn't trigger from the back button

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甜味超标
甜味超标 2021-01-25 16:27

I don\'t seem to be able to get the body onload=\"...\" event to fire in Safari when the page is entered via the back button. It works fine in FF and IE. Is there a Javascript

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5条回答
  • 滥情空心
    2021-01-25 16:37

    Rather than using the onload attribute of the <body> tag, you could instead try using the DOM ready event with jQuery, like so:

    $(document).ready(function() {
    // your code here
});

    Or, the shorthand version:

    $(function() {
    // your code here
});

    Even if this doesn't solve your issue with Safari, it's still a good practice in general because it separates your HTML and Javascript into easily discernible parts.

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  • 孤城傲影
    2021-01-25 16:42

    if the onload event is not fired,you should set the cache-control.

    <head>
<meta charset="utf-8">
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">

    or add a tag in the body:

    <iframe style=”height:0px;width:0px;visibility:hidden” src=”about:blank”>
this frame prevents back forward cache
</iframe>
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  • 萌比男神i
    2021-01-25 16:42

    This was the only thing that worked for me:

    http://jkoder.com/prevent-safariany-browser-loading-from-cache-when-back-button-is-clicked/

    window.onpageshow = function(event) {
  if (event.persisted) {
      window.location.reload(); 
  }
};
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  • 暗喜
    2021-01-25 16:50

    This is well known. Safari and many other browser cache the page and when you navigate back to it, they just restore the previous state.

    Here is a good MDN article about this topic (it's about FF 1.5 but should apply to other browsers as well): https://developer.mozilla.org/En/Using_Firefox_1.5_caching

    Try the pageshow event like @zvona suggested.

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  • 小鲜肉
    2021-01-25 17:01

    Try:

    window.addEventListener("pageshow", function() {
  alert('page shown');
}, false);

    For Opera browser, read this: http://samuli.hakoniemi.net/onload-issues-with-opera/

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