How to use the driver.wait(function() using Javascript

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Javascript

driver

I'm currently working on a code project to automate the checkout process for a website. I want to visually see the page load and do so at a slow methodical pace. I've done so with the driver.sleep function shown below...

driver.findElement(By.id('delivery_option8')).click();
driver.sleep(1000);
driver.findElement(By.id('submit_form')).click();
driver.sleep(100);

How can I change this to use the driver.wait function? I've been told this driver.sleep is sort of pointless to the checkout process. Any help would be greatly appreciated my experience with javascript is to a minimum so please be exact with your revised code response.

Thank you!