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c#seleniumselenium-webdrivercss-selectors
James Madison
James Madison

Reputation: 347

Selenium WebDriver IE performance

_driver.FindElement(By.CssSelector("[id='3_NewSiteMaintenanceButton']"));

=15.0s

_driver.FindElement(By.CssSelector("[id$='NewSiteMaintenanceButton']"));

=18.4s

_driver.FindElement(By.CssSelector("#3_NewSiteMaintenanceButton"));

NoSuchElementException : Unable to find element with css selector == #3_NewSiteMaintenanceButton

_driver.FindElement(By.Id("3_NewSiteMaintenanceButton"));

=12.58s

Chrome and FireFox complete the entire test in 4 and 6 seconds respectively, while IE takes 12-18 seconds to find a single DOM element. Why is IE so much slower, and how can I increase performance?

Upvotes: 2

Views: 243

Answers (1)

BoltClock
BoltClock

Reputation: 723598

An ID selector cannot begin with a digit, because a CSS identifier cannot begin with a digit. If you had not quoted the value in your attribute selectors, they would both fail for the same reason (although it is strange that it results in a NoSuchElementException instead of something else, because technically the selector is invalid).

To use an ID selector, you need to escape the initial digit. If the digit is coming from a variable, you can still escape it separately, just place the escape immediately after the hash:

_driver.FindElement(By.CssSelector("#\\" + prefex + "_NewSiteMaintenanceButton"));

Upvotes: 6

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