13/12/2010
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Although Batch and JScript JavaScript are developed and released by Microsoft, but they are two different concepts. This free tutorial guides you embed and execute JScript function in a Batch file. Please go to the detailed post for full instructions and codes.
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The program below is both a batch file and a JavaScript WSH console file. The dual nature of the file is achieved via JavaScript block comments and the strategy by which the command interpreter searches for target labels in a batch file.
Save the file below as hybrid.bat.
- rem ( /*
- @echo off
- cscript /nologo /e:javascript hybrid.bat
- goto end
- */ )
- // by Jim Lawless
- // This program sample is in the public domain
- function rem() {
- WScript.StdOut.WriteLine("Hello, world!");
- }
- /*
- :end */
The first line of code is benign for a batch file; the REM command is a single line remark, so it ignores all text after it.
The first line is constructed so that syntactically, it is also the beginning of a valid JavaScript function call for a function named rem().
Immediately after the first left-parenthesis in the call, a block-comment is used to mask the next few lines from the WSH JavaScript interpreter. Batch commands follow on the next three lines, ending with a goto.
The batch file itself invokes the WSH console interpreter cscript.exe passing in the name of the file ( hybrid.bat ) itself. After invocation of the script as a JavaScript file, the batch file portion attempts to transfer control to a label named end.
When the command processor attempts to transfer control to a label via the goto verb, each line of the batch file is examined sequentially until a matching label is found. Any syntax errors encountered ( the lines of JavaScript text ) are ignored.
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James K. Lawless [more]
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13/12/2010
Although Batch and JScript JavaScript are developed and r...Embedding and Executing JScript JavaScript in a Batch File - Embedding and Executing JScript JavaScript in a Batch File - Language: English
