Java Script without usage of any automation Tool

Is it possible that we can automate tests using Java Script without usage of any Tool?

Such like, if we can write a Java script in a notepad for automating a test, save 开发者_开发百科it as a JS file and run it for perfect execution?

Any help/helpful link is much appreciated. Thanks

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Yes, please refer to the following question: Using JSLint in Notepad++