PowerShell小技巧实现IE Web自动化

## 打开IE窗口#function New-IEWindow{  param(  [string]$Url,  [switch]$Visible,  [switch]$FullScreen  )  $Global:IEHost = new-object -com "InternetExplorer.Application"  $Global:IEHost.Navigate($Url)   #设置IE可见性和全屏  $Global:IEhost.Visible= $Visible  $Global:IEHost.FullScreen= $FullScreen   } ##等待IE加载完毕#function Wait-IEReady([int]$TimeoutSeconds=10){  $milliseconds=0  $maxMilliseconds = $TimeoutSeconds * 1000  while($Global:IEHost.Busy)  {       if($milliseconds -gt $maxMilliseconds)   {    throw 'Wait ie ready timeout.'   }   sleep -Milliseconds 100   $milliseconds+=100      }} ## 根据ID，Class，Name，Tag获取HTML元素#function Get-HtmlElement ($Id,$Name,$Class,$Tag){ if($Id) {  return $IEHost.Document.getElementById($id) } elseif($Name) {  return $IEHost.Document.getElementsByName($Name) } elseif($Class) {  $IEHost.Document.all |　where {$_.className -contains $Class} } elseif($Tag) {  $IEHost.Document.getElementsByTagName($Tag) }  } ##关闭IE窗口#function Close-IEWindow{  $Global:IEHost.quit()  Remove-Variable IEHost -Force} ##设置IE的地址#function Navigate-IE($Url){ Set-IE -URL $Url} ## 设置IE的地址，或者动作：前进，倒退，刷新#function Set-IE{ param( [ValidateSet('GoBack', 'GoForward','Refresh')] [string]$Action, [uri]$URL )  # 动作 switch($Action) { ('GoBack'){ $Global:IEHost.GoBack() } ('GoForward'){ $Global:IEHost.GoForward() } ('Refresh'){ $Global:IEHost.Refresh() } }  # 设置IE地址 if( $URL) { $Global:IEHost.Navigate($URL) }} ## 在IE窗口中执行脚本#function Invoke-IEScript($Code,$Language='Javascript'){ if( -not [string]::IsNullOrWhiteSpace($Code)) { $Global:IEHost.Document.parentWindow.execScript($Code,$Language) }}