How to modify table style with javascript
JavaScript is a scripting language used to add interactivity and dynamic effects to web pages. In web development, tables are one of the commonly used elements. By using JavaScript, you can easily modify the style of a table to make it more beautiful and easier to read.
1. Add styles to the table
Before we start modifying the table style, we need to add styles to the table. We use CSS to define styles for the table, and then use JavaScript to modify those styles. The following example demonstrates how to add styles to a table:
<!DOCTYPE html>
<html>
<head>
<style>
table {
border-collapse: collapse;
width: 100%;
}
th, td {
text-align: left;
padding: 8px;
border-bottom: 1px solid #ddd;
}
tr:nth-child(even) {
background-color: #f2f2f2;
}
</style>
</head>
<body>
<table>
<tr>
<th>姓名</th>
<th>年龄</th>
<th>性别</th>
</tr>
<tr>
<td>张三</td>
<td>25</td>
<td>男</td>
</tr>
<tr>
<td>李四</td>
<td>32</td>
<td>女</td>
</tr>
<tr>
<td>王五</td>
<td>18</td>
<td>男</td>
</tr>
</table>
</body>
</html>In the above example, we defined the following styles:
border-collapse: collapse;means Merge the borders of cells.width: 100%;Indicates that the table occupies 100% of the width of the parent container.th, tdIndicates the style of the table header and table datatext-align: left;Indicates that the data is left aligned.padding: 8px;means the distance between the data and the border is 8 pixels.border-bottom: 1px solid #ddd;Indicates that the border thickness at the bottom of each row of data is 1 pixel and the color is light gray.tr:nth-child(even)means changing the background color every other line.
2. Use JavaScript to modify the table style
Now that we have defined the styles for the table, the next step is to use JavaScript to modify these styles. Here are some examples that demonstrate how to change the table style using JavaScript:
- Change the table background color:
document.getElementsByTagName("table")[0].style.backgroundColor = "#f9f9f9";This example changes the background color of the table to light gray.
- Change the header background color:
var th = document.getElementsByTagName("th");
for (var i = 0; i < th.length; i++) {
th[i].style.backgroundColor = "#ddd";
}This example changes the background color of the header to light gray.
- Change the font size of all cells in the table:
var td = document.getElementsByTagName("td");
for (var i = 0; i < td.length; i++) {
td[i].style.fontSize = "16px";
}This example changes the font size of all cells in the table to 16 pixels.
- Change the font color of all even-numbered rows in the table:
var tr = document.getElementsByTagName("tr");
for (var i = 1; i < tr.length; i += 2) {
var td = tr[i].getElementsByTagName("td");
for (var j = 0; j < td.length; j++) {
td[j].style.color = "#999";
}
}This example changes the font color of all even-numbered rows in the table to light gray.
- Change the border style of the cells in the first column of the table:
var td = document.getElementsByTagName("td");
for (var i = 0; i < td.length; i += 3) {
td[i].style.borderRight = "1px solid #ddd";
}This example changes the right border of the cells in the first column of the table to 1 pixel lighter Gray border.
- Hide the last column in the table:
var table = document.getElementsByTagName("table")[0];
var td = table.getElementsByTagName("td");
for (var i = td.length - 1; i >= 0; i--) {
if ((i + 1) % 3 === 0) {
td[i].parentNode.removeChild(td[i]);
}
}This example deletes the last column of cells in the table.
Summary
In this article, we learned how to modify table styles using JavaScript. By using these techniques, you can easily create and modify beautified tables. Depending on your needs, you can use JavaScript to add dynamic effects and interactivity to the table. Now that you have learned how to modify table styles, try using JavaScript to beautify your tables!
The above is the detailed content of How to modify table style with javascript. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
What is useEffect? How do you use it to perform side effects?
Mar 19, 2025 pm 03:58 PM
The article discusses useEffect in React, a hook for managing side effects like data fetching and DOM manipulation in functional components. It explains usage, common side effects, and cleanup to prevent issues like memory leaks.
Explain the concept of lazy loading.
Mar 13, 2025 pm 07:47 PM
Lazy loading delays loading of content until needed, improving web performance and user experience by reducing initial load times and server load.
What are higher-order functions in JavaScript, and how can they be used to write more concise and reusable code?
Mar 18, 2025 pm 01:44 PM
Higher-order functions in JavaScript enhance code conciseness, reusability, modularity, and performance through abstraction, common patterns, and optimization techniques.
How does currying work in JavaScript, and what are its benefits?
Mar 18, 2025 pm 01:45 PM
The article discusses currying in JavaScript, a technique transforming multi-argument functions into single-argument function sequences. It explores currying's implementation, benefits like partial application, and practical uses, enhancing code read
How does the React reconciliation algorithm work?
Mar 18, 2025 pm 01:58 PM
The article explains React's reconciliation algorithm, which efficiently updates the DOM by comparing Virtual DOM trees. It discusses performance benefits, optimization techniques, and impacts on user experience.Character count: 159
What is useContext? How do you use it to share state between components?
Mar 19, 2025 pm 03:59 PM
The article explains useContext in React, which simplifies state management by avoiding prop drilling. It discusses benefits like centralized state and performance improvements through reduced re-renders.
How do you prevent default behavior in event handlers?
Mar 19, 2025 pm 04:10 PM
Article discusses preventing default behavior in event handlers using preventDefault() method, its benefits like enhanced user experience, and potential issues like accessibility concerns.
What are the advantages and disadvantages of controlled and uncontrolled components?
Mar 19, 2025 pm 04:16 PM
The article discusses the advantages and disadvantages of controlled and uncontrolled components in React, focusing on aspects like predictability, performance, and use cases. It advises on factors to consider when choosing between them.
