javascript - Front-end performance optimization, how to locate the blank time between timeLine resources?

I just came into contact with the front-end optimization of a project. When I looked at timeLine in Google Developer Tools, I found that there was a blank space between two resources, as shown in the picture. I don’t know what caused it. How to locate & optimize it? .]

世界只因有你 2017-06-26 10:51:10 0  2  885

javascript - The front-end was asked about performance and security. Is there a comprehensive summary?

Front-end performance and security are more important and are often mentioned. Some of my personal understanding: Performance file merging, file compression, Sprite image gzip [generally configured on nginx or Apache in the background, it seems that the front-end is out of the question] dynamic load...

巴扎黑 2017-05-18 10:58:41 0  3  867

Under what circumstances should cache be used? How to optimize the front and back ends (mini program page)

A product details interface, query data through product ID, and the front end mainly displays a picture. Database field pictue: the saved picture address, the picture is stored on the server. The problem now is that the pictures are loading too slowly, sometimes it takes a second to open, and someti...

小萝卜头 2020-05-16 18:32:29 0  3  1382

Optimizing React Application Performance: An Efficient Way to Render Large Numbers of Projects

I'm developing a React application and need to display a large list of items (thousands of rows). Currently, performance is very slow when the user scrolls through the list or filters items. Is there any way to optimize the performance of my React application to improve user experience? Some additio...

P粉733166744 2024-01-16 20:43:20 0  1  465

javascript - How to avoid duplication of development and maintenance of multiple versions when providing enterprise services? How to design front-end and back-end PHP to improve scalability?

Using PHP to develop enterprise service systems requires providing different versions of the system for different customers. Most of the system requirements for each version are the same. How to avoid repeated development and maintain multiple versions? How to design front-end and back-end PHP to im...

黄舟 2017-05-16 13:15:24 0  1  453

node.js i/o optimization - Stack Overflow

How does node.js optimize i/o performance? I wonder if this senior has any experience to share?

phpcn_u1582 2017-05-24 11:38:47 0  1  720

Find a front-end UNIAPP to help adapt the APP. It is best to have someone local in Changsha who can cooperate with you for a long time.

Find a front-end UNIAPP to help adapt the APP. It is best if it is local in Changsha. It can be used for long-term cooperation. Currently, it can only be billed by project or part-time. The current task is to adapt the front-end and small programs and optimize it. It is best to contact vx:crw689, a ...

@A~旺仔 2022-04-11 12:27:02 0  1  1159

javascript - performance optimization issues

How to optimize this code? The boss said that it should be converted into ES6 map data structure. I may have done it wrong and it seems to be slower. This is the optimization I did. It seems to be slower. Please give me some advice.

高洛峰 2017-07-05 10:54:21 0  6  1056

node.js - nodejs performance optimization issues

{Code...} For example, if cron is executed regularly, when will the memory of cron be released? If a certain attribute of cron is a larger array. For example, cron.data, do I need to manually set cron.data = [] to release memory every time cron ends the task? If I don't release manually...

阿神 2017-05-31 10:41:22 0  1  655

node.js - Why is nodejs not popular on the server side?

In the past few years, everyone has been enthusiastic about nodejs. Nodejs has high performance, uses the same language for the front and backend, and saves development resources. But why are the domestic server-side languages ​​​​still mainly PHP and Java? In terms of front-end engineering, nodejs,...

習慣沉默 2017-05-16 13:21:00 0  5  2915

javascript - Why is it said that the separation of front and back ends is not conducive to seo

I just recently built a multi-page Vue project, but I saw many people on the Internet saying that the separation of front-end and back-end is not conducive to SEO. Why? Is it conducive to SEO optimization to write static pages on the front end and send them to the back end for server-side rendering?...

PHP中文网 2017-05-19 10:11:53 0  3  1183

angular.js - The server side does not use the view layer, and all APIs are used to return json, which is handed over to the front-end angularjs for rendering. Is it suitable for an e-commerce website?

Our overall requirement is to do PC web in the early stage and mobile web in the later stage. Should I use jquery + bootstrap for the PC web separately and angularjs for the mobile terminal, or should I use angularjs directly? Comprehensive consideration of performance (caching), security, overall d...

世界只因有你 2017-05-15 16:53:24 0  3  682

[Must-read for front-end job hunting] Selected front-end development interview questions and answers_Outline

Front-end development interview knowledge points outline: 1. HTML&CSS: Understanding of Web standards, browser kernel differences, compatibility, hacks, basic CSS skills: layout, box model, selector priority and use, HTML5, CSS3, mobile terminal adaptation 2. JavaScript: Data type, object-ori...

天蓬老师 2017-11-13 12:02:37 1  3  1618

javascript - The page is stuck when opening, please optimize it, thank you!

Because a lot of pictures are used, the page opens very slowly. How can we optimize it well? The page has two parts, PC and mobile. The main reason is that the PC is very laggy.

世界只因有你 2017-06-28 09:28:19 0  4  940

javascript - Weex Android debugging issues

As shown in the picture, Chrome is used. In debugger mode, this message always appears in red. Sometimes it takes a long time for the front end to load. Is there any optimization plan?

给我你的怀抱 2017-05-16 13:31:38 0  3  729

Problems with performance optimization of PHP business interface in SOA?

The performance of writing business interfaces in modules is very slow. From time to time, one of the interfaces will be blocked until the timeout occurs. In the development environment, the normal interface is generally 150ms, but the interface that is called across modules will exceed 1000ms, and ...

女神的闺蜜爱上我 2017-06-13 09:21:53 0  2  911

react large list performance issue - Stack Overflow

Now we use React to obtain a large amount of data, render it, and display it on the page. How to optimize performance?

黄舟 2017-07-05 10:49:27 0  1  1059

Using useEffect and reactStrictMode: Optimizing React components for performance and reliability

I have a challenge, I want to load part of an array into a new array called "loadedData" and only display the loaded data, since the component is very heavy. However, on first load, I'm having a lot of problems because useEffect seems to mess it up. The first load happens twice, and the fi...

P粉739706089 2023-08-18 16:06:50 0  1  621