激活Select Element Safari-AppleScript

Question

我是AppleScript的新手，我想弄清楚如何激活选定的元素。

我想让野生动物园激活目标元素的可悲尝试：

我通过选择来选择元素。活动元素是播放按钮：

。

但是，当我尝试运行脚本时，出现以下错误：

。

有人可以告诉我我的错误和/或显示解决方法的示例吗？

Answer 1

使用AppleScript代码中的JavaScript，您可以在Script Editor应用中使用以下代码在Safari中单击YouTube视频上的播放/暂停按钮

clickYouTubePlayButton("ytp-play-button ytp-button", 0)

to clickYouTubePlayButton(theClassName, elementnum)
    if application "Safari" is running then
        try
            tell application "Safari"
                tell window 1 to set current tab to tab 1 whose URL contains "youtube"
                do JavaScript "document.getElementsByClassName('" & theClassName & "')[" & elementnum & "].click();" in document 1
            end tell
        end try
    end if
end clickYouTubePlayButton

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响应用户@ user3439894的评论，关于必须启用Safari才能允许JavaScript事件，以上代码才能正常工作...以下代码将自动在需要时在Safari中启用JavaScript事件的过程是..

使用最新版本的macOS Mojave和最新版本的Safari进行测试

global windowName, errMsg, errNum

clickYouTubePlayButton("ytp-play-button ytp-button", 0)

to clickYouTubePlayButton(theClassName, elementnum)
    if application "Safari" is running then
        try
            tell application "Safari"
                tell window 1 to set current tab to tab 1 whose URL contains "youtube"
                do JavaScript "document.getElementsByClassName('" & theClassName & "')
                [" & elementnum & "].click();" in document 1
            end tell
        on error errMsg number errNum
            if errNum is 8 then
                my enableJavascript()
            end if
        end try
    end if
end clickYouTubePlayButton

on enableJavascript()
    tell application "Safari" to activate
    tell application "System Events"
        tell application process "Safari"
            click menu bar item "Safari" of menu bar 1
            click menu item 4 of menu 1 of menu bar item "Safari" of menu bar 1
            delay 1
            set windowName to get name of window 1
            click UI element "Advanced" of toolbar 1 of window windowName
            click checkbox "Show Develop menu in menu bar" of group 1 of group 1 ¬
                of window "Advanced"
            click UI element 2 of window "Advanced"
            click menu bar item "Develop" of menu bar 1
            click menu item "Allow JavaScript from Apple Events" of menu 1 of ¬
                menu bar item "Develop" of menu bar 1
            delay 0.5
            if exists of UI element "Allow" of window 1 then
                click UI element "Allow" of window 1
            end if
        end tell
    end tell
end enableJavascript