使用ActiveXObject Scripting.FileSystemObject使用环境变量

问题描述

我正在使用ActiveXObject，而我正在使用FileExists函数.我正在做一些测试，看是否有效.我终于能够显示正确.

Im using ActiveXObject and I am using the FileExists function. I was doing some testing to see if it worked. I finally was able to show true.

var shellActiveXObject = new ActiveXObject("Scripting.FileSystemObject");        
alert(shellActiveXObject.FileExists('C:/Windows/notepad.exe'))

我想用％windir％之类的环境变量替换C:/Windows.
当我这样做时，它会将其读取为false.

I want to replace the C:/Windows with an environment variable like %windir%.
When I do that, it reads it as false. How can I make it so it inteprets the environment variable?

推荐答案

var objshell = new ActiveXObject("Wscript.Shell");
var strfolderpath = objshell.ExpandEnvironmentStrings("%windir%");

它正确展开了

It expanded it correctly

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