javascript 如何编写一个简单的 JScript 输入/输出程序？
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How can I write a simple JScript input/output program?
提问by Eric
I'm planning on using JavaScript to enter an informatics competition (BIO) tomorrow. However, I can't rely on the examiner having a browser with a decent JavaScript engine, so I was hoping to use Microsoft's JScript instead.
我计划明天使用 JavaScript 参加信息学竞赛 (BIO)。但是，我不能指望考官拥有带有不错 JavaScript 引擎的浏览器，所以我希望改用 Microsoft 的 JScript。
However, the documentation is, quite frankly, crap. Can someone post some example code that reads in a line of text, calls foo(string)on it, and echos the output to the command line?
然而，坦率地说，文档是垃圾。有人可以发布一些示例代码，读取一行文本，调用foo(string)它，并将输出回显到命令行吗？
Similarly, how do I actually run it? Will wscript.exe PATH_TO_JS_FILEdo the trick?
同样，我如何实际运行它？会wscript.exe PATH_TO_JS_FILE做伎俩吗？
回答by aikeru
If you're using the command-line, I'd execute the script using CSCRIPT.EXE.
ie: CSCRIPT.EXE myscript.jsThis is because WScript.Echofrom WSCRIPTwill create a dialog box and from CSCRIPToutputs a line to the console. Run this in a command window (CMD).
如果您使用命令行，我会使用CSCRIPT.EXE. 即：CSCRIPT.EXE myscript.js这是因为WScript.EchofromWSCRIPT将创建一个对话框，并且 fromCSCRIPT将一行输出到控制台。在命令窗口 (CMD) 中运行它。
Reading a line from console into variable:
从控制台读取一行到变量中：
var x = WScript.StdIn.ReadLine();
Where StdInis a TextStream object. There is also an StdOutwhich can be used in place of WScript.Echo()...
哪里StdIn是一个TextStream对象。还有一个StdOut可以用来代替WScript.Echo()...
Writing the output of foo(x)to console: (must run under CSCRIPT)
将输出写入foo(x)控制台：（必须在 下运行CSCRIPT）
WScript.Echo(foo(x));
You can use the WScriptobject to determine which engine you are running under, there's a question/answer for that (VBScript, but uses the same objects under JScript) here.
您可以使用WScript对象来确定你是下运行，其发动机，有一个问题/答案为（VBScript中，但在JScript中使用相同的对象）这里。
