jQuery Tutorial: Use jQuery to modify attribute values ​​of table rows

jQuery is a JavaScript library for developing interactive web pages that simplifies the process of processing HTML documents, event handling, animation, and AJAX operations. In web development, it is often necessary to operate certain rows of the table, such as modifying the attribute values ​​of the rows. This article will introduce how to use jQuery to modify the attribute values ​​​​of table rows, and provide specific code examples to help readers better understand and apply this technology.

1. Preparation

Before you start, make sure you have introduced the jQuery library, which can be introduced in the HTML file in the following way:

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>

2. Create a table

First, we need to create a table in the HTML document and add a unique identifier to each row for subsequent operations. The following is a simple table example:

<table id="myTable">
    <tr id="row1">
        <td>John</td>
        <td>Doe</td>
    </tr>
    <tr id="row2">
        <td>Jane</td>
        <td>Smith</td>
    </tr>
</table>

3. Use jQuery to modify the attribute values ​​of table rows

Next, we will use jQuery to modify the attribute values ​​of table rows. Here is a sample code that demonstrates how to change the background color of the first row to red:

$(document).ready(function() {
    $("#row1").css("background-color", "red");
});

In the above code, the $(document).ready() function is used to ensure Perform the operation after the document is loaded. $("#row1") selects the table row with the id row1. The .css() method uses To modify the style properties, change the background color to red.

4. Example: Alternate row color change

In addition to modifying the properties of specific rows, we can also achieve the effect of alternate row color change. The following is a sample code that sets the background color of the even rows of the table to gray:

$(document).ready(function() {
    $("#myTable tr:even").css("background-color", "lightgrey");
});

In this example, $("#myTable tr:even") Select the table For the even-numbered rows of myTable, the .css() method changes the background color of these rows to gray.

Through the above code examples, readers can flexibly use jQuery to modify the attribute values ​​​​of table rows to achieve various needs. I hope this article can help you better understand and apply jQuery technology.

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