


How to solve the problem of multiple ajax page requests and page loading blocking
I encountered multiple ajax loads in the project, and there was a problem with the loading, and it could not be loaded in the first time.
The main reason is because: the browser's rendering (UI) thread and the js thread are mutually exclusive. When executing js time-consuming operations, page rendering will be blocked. There is no problem when we execute asynchronous ajax, but when set to a synchronous request, other actions (the code behind the ajax function, and the rendering thread) will stop. Even if my DOM operation statement is the sentence before the request is initiated, this synchronization request will "quickly" block the UI thread without giving it time to execute. This is why the code fails.
#1. Rewrite synchronization into asynchronous and nest multiple ajax requests together. , call another ajax request after success, so that the second request loading will not be blocked because the first request ends first.
2. Use jquery’s Deferred object. jQuery introduced the Deferred object after version 1.5, which provides a very convenient generalization Asynchronous mechanism.
3. Use the timer setTimeout() or setinterval() function to check regularly whether ajax returns successfully.
The above is the detailed content of How to solve the problem of multiple ajax page requests and page loading blocking. 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











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

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.

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.

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

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

"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 solve the problem of jQueryAJAX error 403? When developing web applications, jQuery is often used to send asynchronous requests. However, sometimes you may encounter error code 403 when using jQueryAJAX, indicating that access is forbidden by the server. This is usually caused by server-side security settings, but there are ways to work around it. This article will introduce how to solve the problem of jQueryAJAX error 403 and provide specific code examples. 1. to make

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:
