How to use ajax to load pages and delete content-JS Tutorial-php.cn

Home

Web Front-end

JS Tutorial

How to use ajax to load pages and delete content

php中世界最好的语言

Apr 02, 2018 am 11:53 AM

ajax load page

This time I will show you how to use ajax to load the page and delete the content. What are the precautions for using ajax to load the page and delete the content. The following is a practical case, let's take a look.

The biggest advantage of ajax is that it will not jump to the page when loading and deleting. Most of today's web pages will choose to use ajax to write, which reduces the code compared to embedding

PHP code At the same time, the loading of the page will be faster. The following is the loading page and deletion of fruits written using ajax using the database fruit table as an example. It may still be a bit awkward to write using ajax at the beginning, so just think of it as a practice.

This is the fruit table:

The following is the code for the home page. First create a php file main.php

<body>
<h2>内容加载</h2>
<table cellpadding="0" cellspacing="0" border="1" width="100%">
 <tr>
  <td>水果名称</td>
  <td>水果价格</td>
  <td>水果产地</td>
  <td>操作</td>
 </tr>
 <tbody id="tb">
 </tbody>
</table>
</body>

Copy after login

I choose The most important thing is that the page only displays the three columns of fruit name, price and origin in the fruit table. Next we will write the loading processing page, create a php file, jiazaiym.php

 <?php
include("DADB.class.php");
$db=new DADB();
$sql="select * from fruit ";
$arr=$db->Query($sql);
$str="";
foreach($arr as $v)
{
 $str=$str.implode("^",$v)."|"; //每一行之间用“|”连接，这样最后就会多出一个“|”
}
$str=substr($str,0,strlen($str)-1); //把最后多出的“|”用截取字符串的方式删去
echo $str;
?>

Copy after login

The loading page code is finished After that, you can formally write ajax. These must be written in main.php.

<script type="text/javascript">
 $.ajax({
  url:"jiazaiym.php",
  dataType:"TEXT",
  success:function(data){
   var str = "";
   var hang = data.split("|");
   for(var i=0;i<hang.length;i++)
   {
    var lie = hang[i].split("^");
     str = str+"<tr><td>"+lie[1]+"</td><td>"+lie[2]+"</td><td>"+lie[3]+"</td><td><input type=&#39;button&#39; ids=&#39;"+lie[0]+"&#39; class=&#39;sc&#39; value=&#39;删除&#39;/></td></tr>"
   }
   $("#tb").html(str);
  }
 })
</script>

Copy after login

Note: When writing ajax, pay special attention to the semicolons and commas inside. I always write commas as semicolons, and the result cannot be output. After checking that the code was correct, I discovered that the comma was written incorrectly. This was a very troublesome thing.

After writing the loading page, we have to start writing the deletion page. Create a php file shanchu.php. Deleting the page is very simple, and it is almost the same as embedding php directly before.

<?php
$ids=$_POST["ids"];
include("DADB.class.php");
$db=new DADB();
$sql="delete from fruit where ids={$ids}";
if($db->Query($sql,0))
{
 echo"OK";
}
else{
 echo"flase";
}

Copy after login

Next, when I want to rewrite an ajax, I will find that it will not run after writing, because the class inside is not recognized when deleting the page when loading the page, which requires me to put the deletion in the loaded In ajax, the loading is encapsulated into a method, which can be called when deleting.

<script type="text/javascript">
 Load();
 function Load() {
  $.ajax({
   url: "jiazaiym.php",
   dataType: "TEXT",
   success: function (data) {
    var str = "";
    var hang = data.split("|");
    for (var i = 0; i < hang.length; i++) {
     var lie = hang[i].split("^");
     str = str + "<tr><td>" + lie[1] + "</td><td>" + lie[2] + "</td><td>" + lie[3] + "</td><td><input type=&#39;button&#39; ids=&#39;" + lie[0] + "&#39; class=&#39;sc&#39; value=&#39;删除&#39;/></td></tr>"
    }
    $("#tb").html(str);
    //删除页面
    $(".sc").click(function(){
     var ids=$(this).attr("ids");
    $.ajax({
     url: "shanchu.php",
     data: {ids: ids},
     type: "POST",
     dataType: "TEXT",
     success: function (aa) { //去空格
      if (aa.trim() == "OK") {
       alert("删除成功");
       Load();
      }
      else {
       alert("删除失败");
      }
     }
    })
    })
   }
  })
 }
</script>

Copy after login

There is no problem if you write it this way.

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to 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

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)

2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Repo: How To Revive Teammates

4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hello Kitty Island Adventure: How To Get Giant Seeds

3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

How Long Does It Take To Beat Split Fiction?

3 weeks ago By DDD

R.E.P.O. Save File Location: Where Is It & How to Protect It?

3 weeks ago By DDD

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

Where is the login entrance for gmail email?

7315

Java Tutorial

1625

CakePHP Tutorial

1349

Laravel Tutorial

1261

PHP Tutorial

1208

Related knowledge

How to copy a page in Word Feb 20, 2024 am 10:09 AM

Want to copy a page in Microsoft Word and keep the formatting intact? This is a smart idea because duplicating pages in Word can be a useful time-saving technique when you want to create multiple copies of a specific document layout or format. This guide will walk you through the step-by-step process of copying pages in Word, whether you are creating a template or copying a specific page in a document. These simple instructions are designed to help you easily recreate your page without having to start from scratch. Why copy pages in Microsoft Word? There are several reasons why copying pages in Word is very beneficial: When you have a document with a specific layout or format that you want to copy. Unlike recreating the entire page from scratch

Error loading plugin in Illustrator [Fixed] Feb 19, 2024 pm 12:00 PM

When launching Adobe Illustrator, does a message about an error loading the plug-in pop up? Some Illustrator users have encountered this error when opening the application. The message is followed by a list of problematic plugins. This error message indicates that there is a problem with the installed plug-in, but it may also be caused by other reasons such as a damaged Visual C++ DLL file or a damaged preference file. If you encounter this error, we will guide you in this article to fix the problem, so continue reading below. Error loading plug-in in Illustrator If you receive an "Error loading plug-in" error message when trying to launch Adobe Illustrator, you can use the following: As an administrator

Stremio subtitles not working; error loading subtitles Feb 24, 2024 am 09:50 AM

Subtitles not working on Stremio on your Windows PC? Some Stremio users reported that subtitles were not displayed in the videos. Many users reported encountering an error message that said "Error loading subtitles." Here is the full error message that appears with this error: An error occurred while loading subtitles Failed to load subtitles: This could be a problem with the plugin you are using or your network. As the error message says, it could be your internet connection that is causing the error. So please check your network connection and make sure your internet is working properly. Apart from this, there could be other reasons behind this error, including conflicting subtitles add-on, unsupported subtitles for specific video content, and outdated Stremio app. like

How to solve the 403 error encountered by jQuery AJAX request Feb 20, 2024 am 10:07 AM

Title: Methods and code examples to resolve 403 errors in jQuery AJAX requests. The 403 error refers to a request that the server prohibits access to a resource. This error usually occurs because the request lacks permissions or is rejected by the server. When making jQueryAJAX requests, you sometimes encounter this situation. This article will introduce how to solve this problem and provide code examples. Solution: Check permissions: First ensure that the requested URL address is correct and verify that you have sufficient permissions to access the resource.

How to solve jQuery AJAX request 403 error Feb 19, 2024 pm 05:55 PM

jQuery is a popular JavaScript library used to simplify client-side development. AJAX is a technology that sends asynchronous requests and interacts with the server without reloading the entire web page. However, when using jQuery to make AJAX requests, you sometimes encounter 403 errors. 403 errors are usually server-denied access errors, possibly due to security policy or permission issues. In this article, we will discuss how to resolve jQueryAJAX request encountering 403 error

How to deal with the problem that Laravel page cannot display CSS correctly Mar 10, 2024 am 11:33 AM

"Methods to handle Laravel pages that cannot display CSS correctly, need specific code examples" When using the Laravel framework to develop web applications, sometimes you will encounter the problem that the page cannot display CSS styles correctly, which may cause the page to render abnormal styles. Affect user experience. This article will introduce some methods to deal with the failure of Laravel pages to display CSS correctly, and provide specific code examples to help developers solve this common problem. 1. Check the file path. First check the path of the CSS file.

How to implement page jump in 3 seconds: PHP Programming Guide Mar 25, 2024 am 10:42 AM

Title: Implementation method of page jump in 3 seconds: PHP Programming Guide In web development, page jump is a common operation. Generally, we use meta tags in HTML or JavaScript methods to jump to pages. However, in some specific cases, we need to perform page jumps on the server side. This article will introduce how to use PHP programming to implement a function that automatically jumps to a specified page within 3 seconds, and will also give specific code examples. The basic principle of page jump using PHP. PHP is a kind of

How to quickly refresh a web page? Feb 18, 2024 pm 01:14 PM

Page refresh is very common in our daily network use. When we visit a web page, we sometimes encounter some problems, such as the web page not loading or displaying abnormally, etc. At this time, we usually choose to refresh the page to solve the problem, so how to refresh the page quickly? Let’s discuss the shortcut keys for page refresh. The page refresh shortcut key is a method to quickly refresh the current web page through keyboard operations. In different operating systems and browsers, the shortcut keys for page refresh may be different. Below we use the common W

See all articles