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

问题描述

我使用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onclick事件执行submitCommand（'lookup'），所以我想直接在$ doc上运行，而不是在页面上找到对象，然后在它上面调用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.

这将更容易，因为对象没有名称和id，使得它变得非常明智，因为我只能依赖它在页面上的位置（例如：页面上的第11个span项）。

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).

或者，如何根据他们的类选择元素？

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

感谢

推荐答案

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

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

管道到对象以过滤您需要的基于其属性），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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