Use jquery to implement partial refresh td
In modern web development, we often need to use AJAX to update part of the page content, and jQuery is a very popular JavaScript library. It provides simple syntax and rich functions, allowing us to implement partial content more conveniently. refresh.
This article will introduce how to use jQuery to implement partial refresh td, so that your page can respond to user operations more smoothly and quickly.
- Create HTML page
First, we need to create an HTML page containing a table to display the data that needs to be updated to the user.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>局部刷新td</title>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>
<table>
<thead>
<tr>
<th>ID</th>
<th>名称</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<tr data-id="1">
<td class="id">1</td>
<td class="name">Apple</td>
<td><a href="#" class="update">更新</a></td>
</tr>
<tr data-id="2">
<td class="id">2</td>
<td class="name">Banana</td>
<td><a href="#" class="update">更新</a></td>
</tr>
<tr data-id="3">
<td class="id">3</td>
<td class="name">Cherry</td>
<td><a href="#" class="update">更新</a></td>
</tr>
</tbody>
</table>
</body>
</html>In this page, we define a table with three data rows, each row contains an ID and a name, and an "Update" link. The ID information of the data row is saved in the data-id attribute for easy subsequent acquisition.
- Write jQuery code
Next, we need to write some jQuery code to achieve partial refresh. Specifically, we need to:
- Listen to the click event of the "Update" link;
- Get the ID of the data that needs to be updated;
- Send an AJAX request to get the latest Data;
- Update td content.
$(function() {
$('a.update').click(function(e) {
e.preventDefault();
var row = $(this).closest('tr');
var id = row.data('id');
$.ajax({
url: '/api/data/' + id, // 这里是获取最新数据的API地址，根据需求修改
dataType: 'json',
success: function(data) {
row.find('.name').text(data.name); // 更新名称字段
}
});
});
});In this code, we first use jQuery's closest function to find the row where the "update" link is located, and then use the data function to get the ID data of the row. Next, we use the ajax function to send a GET request to the API address, expecting to obtain the latest data. When the acquisition is successful, we use the find function to find the name field and use the text function to update the field content.
- Write API code
We wrote the jQuery code earlier, but we also need an API to provide the latest data. Below is a simple Node.js Express application example that you can modify to suit your needs.
const express = require('express')
const app = express()
const data = [
{ id: 1, name: 'Apple' },
{ id: 2, name: 'Banana' },
{ id: 3, name: 'Cherry' }
]
app.get('/api/data/:id', (req, res) => {
const id = req.params.id
const item = data.find(item => item.id == id)
res.json(item)
})
app.listen(3000, () => console.log('Server started on port 3000'))In this API, we only provide a simple GET request handler that accepts an ID parameter, looks up the data from the data array, and returns the result in JSON format. Please note that this API is just an example and you will need to modify it to suit your specific needs.
- Run the example
Now, we have finished writing the jQuery code and API code. Next, we need to start the service and access the HTML page.
First, we need to use the command line to enter the project directory, and then start the API service:
node app.js
Then, we open the index.html file in the browser, we can see a file containing three Table of data rows. When we click the "Update" link, the jQuery code will send an AJAX request to the API and update the name field in the table row.
- Summary
In this article, we introduced how to use jQuery to implement partial refresh td. Specifically, we created an HTML file containing a table, And wrote some jQuery code to implement the update. In addition, we have written a simple API to provide the latest data.
jQuery is a popular JavaScript library that provides rich functions and syntax to make web development easier. It's a great choice when you need to implement partial refresh. If you haven't used it yet, be sure to give it a try.
The above is the detailed content of Use jquery to implement partial refresh td. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undress AI Tool
Undress images for free
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
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)
A Deep Dive into WebAssembly (WASM) for Front-End Developers
Jul 27, 2025 am 12:32 AM
WebAssembly(WASM)isagame-changerforfront-enddevelopersseekinghigh-performancewebapplications.1.WASMisabinaryinstructionformatthatrunsatnear-nativespeed,enablinglanguageslikeRust,C ,andGotoexecuteinthebrowser.2.ItcomplementsJavaScriptratherthanreplac
Server-Side Rendering with Next.js Explained
Jul 23, 2025 am 01:39 AM
Server-siderendering(SSR)inNext.jsgeneratesHTMLontheserverforeachrequest,improvingperformanceandSEO.1.SSRisidealfordynamiccontentthatchangesfrequently,suchasuserdashboards.2.ItusesgetServerSidePropstofetchdataperrequestandpassittothecomponent.3.UseSS
Security Headers for Frontend Applications
Jul 18, 2025 am 03:30 AM
Front-end applications should set security headers to improve security, including: 1. Configure basic security headers such as CSP to prevent XSS, X-Content-Type-Options to prevent MIME guessing, X-Frame-Options to prevent click hijacking, X-XSS-Protection to disable old filters, HSTS to force HTTPS; 2. CSP settings should avoid using unsafe-inline and unsafe-eval, use nonce or hash and enable reporting mode testing; 3. HTTPS-related headers include HSTS automatic upgrade request and Referrer-Policy to control Referer; 4. Other recommended headers such as Permis
Frontend Development for Virtual Reality (VR) on Web
Jul 19, 2025 am 02:35 AM
The core of VR web front-end development lies in performance optimization and interactive design. You need to use WebXR to build a basic experience and check device support; choose A-Frame or Three.js framework development; uniformly process input logic of different devices; improve performance by reducing drawing calls, controlling model complexity, and avoiding frequent garbage collection; design UI and interactions that adapt to VR characteristics, such as gaze clicks, controller status recognition and reasonable layout of UI elements.
Frontend Error Monitoring and Logging Solutions
Jul 20, 2025 am 01:39 AM
The core of front-end error monitoring and logging is to discover and locate problems as soon as possible, and avoid user complaints before knowing them. 1. Basic error capture requires the use of window.onerror and window.onunhandledrejection to catch JS exceptions and Promise errors; 2. When selecting the error reporting system, give priority to tools such as Sentry, LogRocket, Bugsnag, and pay attention to SourceMap support, user behavior tracking and grouping statistics functions; 3. The reported content should include browser information, page URL, error stack, user identity and network request failure information; 4. Control the log frequency to avoid log explosion through strategies such as deduplication, current limiting, and hierarchical reporting.
Understanding the JavaScript Event Delegation Pattern
Jul 21, 2025 am 03:46 AM
Event delegation is a technique that uses the event bubble mechanism to hand over the event processing of child elements to the parent element. It reduces memory consumption and supports dynamic content management by binding listeners on parent elements. The specific steps are: 1. Binding event listeners to the parent container; 2. Use event.target to determine the child elements that trigger the event in the callback function; 3. Execute the corresponding logic based on the child elements. Its advantages include improving performance, simplifying code maintenance and adapting to dynamically added elements. When using it, you should pay attention to event bubble restrictions, avoid excessive centralized monitoring, and reasonably select parent elements.
Frontend Memory Leak Detection and Prevention
Jul 16, 2025 am 02:24 AM
Common causes and response methods for front-end memory leaks: 1. The event listener is not properly cleaned, such as the useEffect in React does not return the unbinding function; 2. The closure reference causes the variable to be recycled, such as the external variables in setInterval are continuously referenced; 3. The third-party library is improperly used, such as the Vue watch is not properly cleaned. The detection method includes using ChromeDevTools' Performance and Memory panels to analyze memory trends and object releases. Best practices to avoid memory leaks include manually cleaning side effects when component unloading, avoiding references to large objects in closures, using WeakMap/WeakSet instead of ordinary collections, optimizing complex structural operations, and regular performance
Performance-First State Management with Zustand
Jul 25, 2025 am 04:32 AM
Zustandisalightweight,performantstatemanagementsolutionforReactappsthatavoidsRedux’sboilerplate;1.Useselectivestateslicingtopreventunnecessaryre-rendersbyselectingonlytheneededstateproperty;2.ApplycreateWithEqualityFnwithshalloworcustomequalitychecks
