Essentially, the CSS Selector combines an element selector and a selector value that can identify particular elements on a web page. Like XPath, CSS selector can be used to locate web elements without ID, class, or Name.
What is the difference between XPath and CSS locators?
Xpath allows bidirectional flow which means the traversal can be both ways from parent to child and child to parent as well. Css allows only one directional flow which means the traversal is from parent to child only. Xpath is slower in terms of performance and speed. Css has better performance and speed than xpath.
What is a locator in selenium?
A locator enables testers to select an HTML DOM element to act on. This post examines various types of locators in Selenium WebDriver.
Why is CSS locator faster than XPath?
CSS Selector is best option if web element has no ID and name. CSS is faster than XPath. CSS is more readable than XPath. … It is very useful when we want to test our application on multiple browsers because CSS engine are consistent in all browsers.
How do I find my CSS selector?
How to find CSS selector in Chrome browser
- Hover the cursor over the image and right click mouse.
- Select Inspect.
- See the highlighted image code.
- Right click on the highlighted code.
- Select Copy > Copy selector.
Which is faster XPath or CSS?
Advantages of Using CSS Selector
It’s faster than XPath. It’s much easier to learn and implement. You have a high chance of finding your elements. It’s compatible with most browsers to date.
Which locator is faster in Selenium?
CSS locator is the fastest, I think this is due to Chrome’s optimization for rendering. XPath locator performs a lot better than I expected, maybe due to the simplest form of XPath expression used, and Chrome might have optimizations on that.
What is the best locator in Selenium?
IDs are the safest locator option and should always be your first choice. By W3C standards, it should be unique in the page meaning you will never have a problem with finding more than one element matching the locator.
How do I find an element in Selenium?
Let’s understand how to use Selenium findElement in various ways:
- Find by ID. ID is uniquely defined for each element and is the most common way to locate elements using ID Locator. …
- Find by Name. …
- Find By LinkText. …
- Find By CSS Selector. …
- Find By XPath.
Why is CSS so fast?
As well as helping to keep your CSS svelte, the browser will also render the elements targeted by shallow selectors faster. Browsers read selectors from right to left. The deeper the selectors are, the longer it takes for the browser to render and re-render the elements those selectors are applied to.
Why XPath is not recommended?
The reason is that the infrastructure used to generate the XPath, doesn’t guarantee that the XPath will remain the same between two different executions. … The recommended way would be to use id or any other stable element identifier, or to search for a parent element and then use the relative XPath from that element.
Is CSS better than XPath?
CSS selectors perform far better than Xpath and it is well documented in Selenium community. Here are some reasons, Xpath engines are different in each browser, hence make them inconsistent. IE does not have a native xpath engine, therefore selenium injects its own xpath engine for compatibility of its API.