Adjust the value of a JavaScript variable using Selenium

My dilemma involves a boolean JavaScript variable called foo, which is currently set to true but I need it changed to false. This particular variable has the advantage of having global scope.

When using Selenium, what is the most effective method for altering the value of this variable?

(The purpose of this variable, unbeknownst to the user, is to disable a CPU-intensive feature that can cause Selenium to become sluggish.)

Answer №1

Since you didn't mention a specific language and Selenium tool, here are some examples for different combinations:

Python + Selenium WebDriver

# assuming JS is enabled for this driver instance
driver.execute_script("window.foo = false;")

Ruby + Selenium RC

selenium.getEval("window.foo = false;")

C++ + Selenium WebDriver

((IJavaScriptExecutor)driver).ExecuteScript("window.foo = false;");

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