Unable to find a hidden JavaScript function

I'm facing an unusual challenge with my project. I'm currently developing a system using JSF2 (Java) and the Primefaces component library. I have multiple buttons triggering a JavaScript function called checkParams() on a onclick event. Now, I need to make changes to this function to accommodate some new components that I've added. The problem is, I can't seem to find the JavaScript function anywhere. I've searched for it in NetBeans using project search, but all I get are references to the buttons. I've also tried looking for it in the Google Chrome developer console, but again, I only see references to the buttons. Even attempting to call alert(checkParams()); on body load shows that the function is undefined in Chrome's console.

Despite this, the buttons are functioning perfectly, validating input fields and sending the data to the Java backend...

Does anyone have any insights on where I might find this elusive function or how I can uncover its location?

javascriptjsf-2

Answer №1

Perhaps the function is hidden within a JavaScript Closure in a script that is executed and then removed from the DOM. This could be a clever way to obscure it. However, this approach would require assigning the function in JavaScript if it is not within the onclick attribute.

If this scenario holds true, one might need to investigate the initially loaded scripts and search within them. Concealing a function in this manner for your own website seems like a drastic measure unless you are safeguarding your parameter validation process. While there are methods to obfuscate the function assignment without directly naming it in the file, it would involve considerable effort.

Generally speaking, it may be challenging to pinpoint the hidden function. Consider checking if the function exists by using alert( checkParams() ) to display the return value or try alert( typeof ( checkParams ) ) to determine if the function is defined. Additionally, using console.log(checkParams) can reveal the function's code with toString().

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