In this tutorial, we will explore attribute and pseudo-selectors in jQuery. These selectors provide a more refined way of targeting elements based on their attributes or their state/position within the Document Object Model (DOM).
By the end of this tutorial, you will learn:
- What attribute and pseudo-selectors are
- How to use them to select elements in jQuery
- Some practical examples of their application
Prerequisites:
- Basic knowledge of HTML and CSS
- Familiarity with JavaScript and jQuery basics
Attribute selectors in jQuery are used to select elements with a specific attribute or attribute value. The basic syntax is $("element[attribute='value']").
Example:
$("a[target='_blank']") // This selects all <a> elements with a target attribute value of '_blank'
Pseudo-selectors in jQuery are used to select elements based on their state or position within the DOM. Examples include :first, :last, :even, :odd, etc. The basic syntax is $("element:pseudo-selector").
Example:
$("div:first") // This selects the first <div> element
// Select all input elements with a type of 'text'
$("input[type='text']").css("background-color", "yellow");
// Expected result: All text input fields will have a yellow background
// Select all even <li> elements
$("li:even").css("background-color", "lightgrey");
// Expected result: All even <li> elements will have a light grey background
In this tutorial, we've learned about attribute and pseudo-selectors in jQuery, how to use them, and some practical examples. The next step is to practice using these selectors in more complex scenarios, and to explore other types of selectors available in jQuery.
Additional resources:
- jQuery Selectors Documentation
- CSS Selectors Reference
Solution:
javascript
$("a[href*='google']").text('Google Link');
element in a
Solution:
javascript
$("div p:last").css("color", "red");
For further practice, try creating a webpage and using different attribute and pseudo-selectors to select and manipulate elements.