使用 PowerShell 通过 Internet Explorer 的 com 接口执行 javascript [英] Execute javascript trough Internet Explorer's com interface using PowerShell

问题描述

我正在使用 PowerShell 编写一些 Internet Explorer 自动化脚本.下面是我如何启动 IE com 对象:

I am writing some Internet Explorer automation scripts using PowerShell. Here is how I start the IE com object:

$ie = New-Object -com "InternetExplorer.Application"
$ie.Navigate("about:blank")
$ie.visible = $true

$doc = $ie.Document

所以，我想做的是在 $doc 对象上执行一些 javascript.例如，我在页面上有一个项目，它有一个执行 submitCommand('lookup') 的 onclick 事件，所以我想直接在 $doc 而不是必须在页面上找到对象，然后在其上调用 Click() 方法.

So, what I would like to do is to execute some javascript on the $doc object. For example, I have an item on the page that has an onclick event which executes submitCommand('lookup'), so I'd like to run that directly on the $doc instead of having to find the object on the page and then calling the Click() method on it.

这会更容易，因为对象没有名称或 ID，因此更改非常明智，因为我只能依赖它在页面上的位置(例如:页面上的第 11 个跨度项目).

It would be easier as the object has no name nor id, making it very sensible to change as I can only rely on it's position on the page (eg: the 11th span item on the page).

另外，您将如何根据类选择元素?这会很有帮助，因为按钮"有它自己的类.

Alternatively, how would you select elements based on their class? That would help a lot as the "button" has it's own class.

谢谢

推荐答案

$spans=@($ie.document.getElementsByTagName("SPAN"))

管道到where-object来过滤你需要的那个(根据它的属性)然后调用click方法，例如:

Pipe to where-object to filter the one you need (based on its attributes) and then call the click method, for example:

$span11 = $spans | where {$_.innerText -eq 'something'}
$span11.click()

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