如何在继续执行脚本之前等待网页完全加载?

问题描述

在继续执行脚本之前，如何等待网页完全加载?

How do you wait for a webpage to fully load before proceeding the script?

我知道如果希望延迟4秒，可以使用延迟4，但这还不够安全.

I know you can use delay 4 if you would want it to wait 4 seconds but this is not safe enough.

在VBA中，您有一个始终有效的简单代码，它像这样:

In VBA you have a simple code that always works and it goes like this:

Dim x As String
x = "https://na6.salesforce.com/p/attach/NoteAttach?pid=" & Range("T34").Value & "&parentname=" & Range("T35").Value & "&retURL=%2F0018000000sKz8K%3Fpb0%3Dtrue"

   Set IE = CreateObject("InternetExplorer.Application")
    IE.Navigate (x)
    IE.Visible = True
    SetParent IE.Hwnd, Application.Hwnd

Do
DoEvents
Loop Until IE.READYSTATE = 4

在Mac上使用带苹果浏览器的Safari相当于什么?

What would be the equivalent of this on mac with safari for applescript?

我在网络上看到了许多版本，但只有与延迟类似的变通方法，或者是需要指定的值来返回或计算页面上的单词数，等等.

I´ve seen many versions on the net but only workarounds similar to the delay or for a specify value to return or to count words on the page and so on.

我只是想要上面的版本是100％完美的.

I simply want the above version which is 100% perfect.

先谢谢您:)

推荐答案

您可以通过从Safari或Chrome调用"document.readyState"来访问页面的就绪状态.

You can access the ready state of a page by calling "document.readyState" from either Safari or Chrome.

tell application "Safari"
    if not (exists document 1) then reopen
    tell current tab of window 1 to set URL to "https://stackoverflow.com/questions/24500011/how-to-wait-for-webpage-to-fully-load-before-proceeding-script"

    set the_state to missing value
    repeat until the_state is "complete"
        set the_state to (do JavaScript "document.readyState" in document 1)
        log "busy"
        delay 0.2
    end repeat
    log "complete"
end tell

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