execute a command in javascript [closed]

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I want to know how to execute a DOS command from javascript. Please help me.

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Something like this:

var shell = new ActiveXObject("WScript.Shell");
shell.run(params);

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you can run commands from javascript if you are a mozilla add-on using xpcom.

Take a look at this. http://jsdoodnauth.wordpress.com/2008/12/04/run-external-apps-using-xpcom-interfaces/

Basically browsers run javascript in a sandbox so scripts can't damage the local computer. To run scripts you have to create a custom made solution for your browser and install it locally so you can get outside the sandbox.