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Receiving and analyzing the JavaScript code connected on the site page

Sometimes, when visiting a site, you may need to look at which JavaScript code is enabled on the page. This may be needed in various situations, for example, you need to figure out how this or that functionality works on the site in question.


JavaScript-code can be embedded directly into the source code of the website page, then there will be no problems with obtaining such code. But often, in addition to such code, third-party code files are also connected, then it is more difficult to find a piece of code responsible for a specific functionality. In this case, you need to analyze which files are included in the page.

The procedure for getting JavaScript code usually boils down to the following:

This procedure can be repeated for each connected file using a search in the source code, just specify the keyword script .

When the source code is received, you can analyze the JavaScript code :

Using this technique, you can get JavaScript code of almost any page on the site, and then perform a complex analysis of JavaScript code . In some cases, code analysis can be complicated, as there may be JavaScript protection is applied -code , but often such code is not protected in any way.

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