Introduction to HTML DOM Structure
In the beginning, we must know the foundation – the Document Object Model (DOM). It is like a blueprint of a webpage. DOM is simply a hierarchy of a web page wherein every component is a node. Understanding this structure is quite important in locating and interacting with elements using Selenium.
Locating Elements Using Various Strategies
Now, let’s explore the methods to locate elements within this DOM tree:
Element IDs are unique identifiers for web elements, making them a quick and efficient way to locate elements. Selenium allows you to find elements by their IDs, ensuring you’re working with the exact element you want.
Names are another way to identify elements, although they may not always be unique. Still, Selenium lets you locate elements by their names, making it a handy option for certain scenarios.
XPath is a powerful tool for navigating XML documents, and it’s exceptionally useful for pinpointing elements in the DOM. You can craft custom XPath expressions to precisely locate elements based on their attributes, position, or hierarchy.
Cascading Style Sheets (CSS) selectors are not just for styling; they’re also great for locating elements. CSS selectors offer a concise and flexible way to target elements using their attributes or relationships with other elements.
Link Text and Partial Link Text
In terms of hyperlinks, you can look for elements depending on the link text or piece of it. This becomes important especially when you wish to click the links for moving around various pages of a site.