Web Front-end
JS Tutorial
Share a piece of code that jQuery Ajax requests background data and receives in the foreground
Share a piece of code that jQuery Ajax requests background data and receives in the foreground
1. Use jQuery ajax request at the front desk
$.ajax({
url: "r_getRolePer.action",
dataType:'json',
data: {userId:"1"}, //请求的附加参数，用json对象
method:'POST',
success: function(data){
$.messager.alert('消息',data.add,'');
//这里使用的时easyui的格式
},
});2. Use the printWriter object of response.getWriter() in the action to print the data to the front desk.
public PrintWriter out()throws IOException{
HttpServletResponse response=ServletActionContext.getResponse();
response.setContentType("text/html");
response.setContentType("text/plain; charset=utf-8");
PrintWriter out= response.getWriter();
return out;
}
*******
JSONObject permision = new JSONObject();
permision.put("add", 0);
permision.put("delete", 0);
permision.put("update", 0);
out().print(permision.toString());
out().flush();
out().close();
Note that the permision object printed to the front desk is a jsonstring. In the first step, the data returned by the success of the ajax request is obtained. It is this permision object, so you can use data.add to get the value of the json object. If the data printed from the background to the front is not json, but the list object, you can also use data[0] to get it. to, but it is recommended to pass it by son
The above is the detailed content of Share a piece of code that jQuery Ajax requests background data and receives in the foreground. 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
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)
Hot Topics
How to share Quark Netdisk to Baidu Netdisk?
Mar 14, 2024 pm 04:40 PM
Quark Netdisk and Baidu Netdisk are very convenient storage tools. Many users are asking whether these two softwares are interoperable? How to share Quark Netdisk to Baidu Netdisk? Let this site introduce to users in detail how to save Quark network disk files to Baidu network disk. How to save files from Quark Network Disk to Baidu Network Disk Method 1. If you want to know how to transfer files from Quark Network Disk to Baidu Network Disk, first download the files that need to be saved on Quark Network Disk, and then open the Baidu Network Disk client. , select the folder where the compressed file is to be saved, and double-click to open the folder. 2. After opening the folder, click "Upload" in the upper left corner of the window. 3. Find the compressed file that needs to be uploaded on your computer and click to select it.
How to share NetEase Cloud Music to WeChat Moments_Tutorial on sharing NetEase Cloud Music to WeChat Moments
Mar 25, 2024 am 11:41 AM
1. First, we enter NetEase Cloud Music, and then click on the software homepage interface to enter the song playback interface. 2. Then in the song playback interface, find the sharing function button in the upper right corner, as shown in the red box in the figure below, click to select the sharing channel; in the sharing channel, click the "Share to" option at the bottom, and then select the first "WeChat Moments" allows you to share content to WeChat Moments.
How to share files with friends on Baidu Netdisk
Mar 25, 2024 pm 06:52 PM
Recently, Baidu Netdisk Android client has ushered in a new version 8.0.0. This version not only brings many changes, but also adds many practical functions. Among them, the most eye-catching is the enhancement of the folder sharing function. Now, users can easily invite friends to join and share important files in work and life, achieving more convenient collaboration and sharing. So how do you share the files you need to share with your friends? Below, the editor of this site will give you a detailed introduction. I hope it can help you! 1) Open Baidu Cloud APP, first click to select the relevant folder on the homepage, and then click the [...] icon in the upper right corner of the interface; (as shown below) 2) Then click [+] in the "Shared Members" column 】, and finally check all
PHP and Ajax: Building an autocomplete suggestion engine
Jun 02, 2024 pm 08:39 PM
Build an autocomplete suggestion engine using PHP and Ajax: Server-side script: handles Ajax requests and returns suggestions (autocomplete.php). Client script: Send Ajax request and display suggestions (autocomplete.js). Practical case: Include script in HTML page and specify search-input element identifier.
Solve the problem that Discuz WeChat sharing cannot be displayed
Mar 09, 2024 pm 03:39 PM
Title: To solve the problem that Discuz WeChat shares cannot be displayed, specific code examples are needed. With the development of the mobile Internet, WeChat has become an indispensable part of people's daily lives. In website development, in order to improve user experience and expand website exposure, many websites will integrate WeChat sharing functions, allowing users to easily share website content to Moments or WeChat groups. However, sometimes when using open source forum systems such as Discuz, you will encounter the problem that WeChat shares cannot be displayed, which brings certain difficulties to the user experience.
How to get variables from PHP method using Ajax?
Mar 09, 2024 pm 05:36 PM
Using Ajax to obtain variables from PHP methods is a common scenario in web development. Through Ajax, the page can be dynamically obtained without refreshing the data. In this article, we will introduce how to use Ajax to get variables from PHP methods, and provide specific code examples. First, we need to write a PHP file to handle the Ajax request and return the required variables. Here is sample code for a simple PHP file getData.php:
jQuery Tips: Quickly modify the text of all a tags on the page
Feb 28, 2024 pm 09:06 PM
Title: jQuery Tips: Quickly modify the text of all a tags on the page In web development, we often need to modify and operate elements on the page. When using jQuery, sometimes you need to modify the text content of all a tags in the page at once, which can save time and energy. The following will introduce how to use jQuery to quickly modify the text of all a tags on the page, and give specific code examples. First, we need to introduce the jQuery library file and ensure that the following code is introduced into the page: <
Share two installation methods for HP printer drivers
Mar 13, 2024 pm 05:16 PM
HP printers are essential printing equipment in many offices. Installing the printer driver on the computer can perfectly solve problems such as the printer being unable to connect. So how to install HP printer driver? The editor below will introduce you to two HP printer driver installation methods. The first method: download the driver from the official website 1. Search the HP China official website in the search engine, and in the support column, select [Software and Drivers]. 2. Select the [Printer] category, enter your printer model in the search box, and click [Submit] to find your printer driver. 3. Select the corresponding printer according to your computer system. For win10, select the driver for win10 system. 4. After downloading successfully, find it in the folder
