pythonseleniumselenium-webdriverselenium-chromedriver

python selenium how to execute_script only when function is available

I want to do driver.execute_script('getDate();')

This function getDate() is defined in the javascript of the webpage. How to make sure that the function definition has loaded first? Otherwise I get an error saying javascript error: no such function...

Update: My use case is that there is a datepicker element that calls this function at some point. I would like to directly get/set the date with this function rather that writing code to find the datepicker element, click on day,month,year etc which I feel would be complicated

Solution

  • You can try using a wait until with the following:

    // waituntil
while (typeof getDate !== "function") {
  task(i); // timeout
}

function task(i) {
  setTimeout(function() {
      // Add tasks to do
  }, 2000 * i);
}

// now call getDate
getDate();