Exploring Selenium: Techniques for examining the source code of an unidentified function

I'm fairly new to using Selenium. I have come across this javascript code snippet and I am attempting to use Selenium to inspect the script, but I haven't had much luck so far. My main goal is to employ Selenium to access/inspect the script in order to confirm that it exists on my page.

This is the anonymous function in question:

<script type="text/javascript"> 
    (function(a,b,c,d){
        a='https://someurl.com:24800/somejs.js';
        b=document;
        c='script';
        d=b.createElement(c);d.src=a;d.type='text/java'+c;
        d.async=true;
        a=b.getElementsByTagName(c)[0];
        if (a.src !== d.src) { 
            a.parentNode.insertBefore(d,a);
        }
    })();
</script>

To illustrate the issue further, in another instance I've managed to retrieve a piece of javascript assigned to a variable like this:

<script type="text/javascript"> 
    var my_var = { attribute_1:'something', attribute_2:'somethingElse'} 
</script>

Then, within my Selenium test...

JavascriptExecutor jsEx = (JavascriptExecutor) driver;
Map<String, String> topScript = (Map<String, String>)jsEx.executeScript("return my_var");

The above code works smoothly and allows me to extract the script for parsing. I'd like to achieve the same result with the anonymous function mentioned earlier (if possible).

I have already attempted to find solutions in the following posts, but without success:

Selenium calling anonymous function generates syntax error

Selenium and asynchronous JavaScript calls

Answer №1

The SCRIPT tag in HTML is just like any other tag, and can be located using XPath to access the text within it.

List<WebElement> scripts = driver.findElements(By.xpath("//script[contains(., 'function(a,b,c,d)')]"));
if (!scripts.isEmpty())
{
    // found the script tag with the anonymous function
    // do something
}

I prefer writing functions for reusable code like this one. The following function searches for the specified code and returns true if found.

public static boolean findCodeInScriptTag(String code)
{
    return !driver.findElements(By.xpath("//script[contains(., '" + code + "')]")).isEmpty();
}

NOTE: Make sure to pass in enough specific code to accurately locate the intended script tag. Being too vague may result in locating multiple instances of the code and returning incorrect results.

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