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 - 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

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

mysql - sql statement optimization issues

{Code...} Assuming that the amount of data in table c is millions, how to optimize these two pieces of data to make the execution faster. Thank you

女神的闺蜜爱上我 2017-06-14 10:50:39 0  4  1078

php website speed optimization

PHP website speed optimization, URL: http://www.daitianxiapr.com/esf; if any master is willing to join the fire, please add me on WeChat 13880287714

代天下房产置业顾问黄先生 2021-07-27 18:06:26 0  1  1145

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 - requirejs module optimization problem

When the requirejs module is optimized and packaged, a module ID will be added to the anonymous define function after it is packaged. Can it be configured to be anonymous define after packaging?

黄舟 2017-05-19 10:25:19 0  1  674

mysql optimization - How to optimize mysql count(id) query speed?

The table structure is shown in the figure. The current data volume is 8000W rows. Are there any optimization methods and ideas?

某草草 2017-05-18 10:51:05 0  7  993

Optimization of Mongodb index?

It is not clear that there is no optimization in the index village. There is no in-depth understanding of indexes. Please help explain it by the way! 1. Each piece of data has geographical information. (province, city), then I created the index: {code...} My doubt is, when this was created, there wa...

伊谢尔伦 2017-05-17 10:01:49 0  2  722

javascript - View of tail call optimization

After reading Ruan Yifeng's ES6 tutorial, I don't know much about tail call optimization. I would like to ask how to monitor memory changes in chrome. I checked the memory in Take Heap Snapshot in Memory, but I don't know which part of the data I should focus on. The code is as shown in the figure:

过去多啦不再A梦 2017-05-19 10:07:08 0  1  609

javascript - Front-end packaging implementation

I would like to ask if the front-end has any technology related to the requirements of selecting the corresponding modules through the interface or other methods, packaging and exporting the corresponding front-end files, and removing irrelevant modules? For example: 1: Module one 2: Function one 3:...

三叔 2017-07-07 10:34:32 0  3  1018

javascript - Is there a front-end framework suitable for developing mobile Html5 web games?

I do PHP, and currently I only use simple javaScript and JQuery, and I have never used a front-end framework. Is there a front-end framework suitable for developing mobile Html5 web games? Just some simple mini-games, such as Snake, Tetris, and masturbation, which may need appropriate beautification...

仅有的幸福 2017-05-31 10:42:02 0  7  1374

Optimization of roles and display of passwords during editing

Why not just use {$vo.gid>1?'Developer':'System Administrator'} when optimizing roles? Isn't this more straightforward? I want to display the password of the edit button. After adding value="{$data.item.password}", the username and password fields in the add button should be empty, but ...

自渡 2018-10-09 14:42:34 0  0  1282

javascript - optimization of a regular expression

Match the integer of 1024-65535, that is, 65535 >= x >= 1024. Use regular expressions to write it. Mine is /^(102[4-9]|10[3-9]d{1}|1[ 1-9]d{2}|[2-9]d{3}|[1-5]d{4}|6[0-4]d{3}|65[0-4]d{2} |655[0-2]d{1}|6553[0-5])$/ Is there a more concise and optimized way to write it?

伊谢尔伦 2017-05-19 10:09:54 0  4  609

Problems with Python3.6 int optimization mechanism, 64-bit machines (-5 to 257)

Optimization mechanism in Python (both 2.7 and 3.5): Numbers between -5~257, if you use the first assignment method, they still belong to the same memory. But the test code I wrote on my local machine is as follows: As a result, this does not comply with the above. Then I compiled it on the Python o...

ringa_lee 2017-05-18 10:54:54 0  1  805

In mysql optimization, the field setting is not null.

In mysql optimization, try to avoid setting fields to null, which will affect query speed. This refers to whether only the index field is not set to null, or it is best not to set all fields to null.

Craile 2020-04-05 10:27:28 0  3  1410

python - version number comparison method optimization

Recently, I wrote a small method for the app version update function. It doesn’t feel very beautiful. How do you compare version numbers? Version number adaptation format: Pure numbers are separated by . {code...}

阿神 2017-05-27 17:39:41 0  1  746

Regarding php business logic and mysql optimization issues

There is a usr table that stores uid, username business table 1, the stored information includes field uid, username business table 2, the stored information is only uid, (multiple data in business table 2 corresponds to one piece of data in business table 1) Existing: Query Traverse business table ...

赵。。。。赵得住 2018-07-11 11:43:28 0  3  1235

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

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