Tag:Communication

  • Front end interview day 3 + 1 – 567

    Time:2021-3-8

    Today’s knowledge point (November 3, 2020) – day 567(I’m going to ask questions, too) [html] Is HTML5 a subset of SGML? [css] If the element width is not enough, how to prevent the long string words from being truncated? [js] Tell me about your understanding of variable objects [soft skills]Why do browsers limit the maximum […]

  • Front end interview daily 3 + 1 – day 586

    Time:2021-3-6

    Today’s knowledge point (November 22, 2020) – day 586(I’m going to ask questions, too) [html] Use canvas to draw a Chinese chess board [css] Why do you use twice as many pictures when you cut pictures on the mobile terminal? [js] Explain the output of the following code and modify the code to output I […]

  • MySQL logs suddenly soared

    Time:2021-3-4

    1. Phenomenon Today, when helping other students to check the problem, we found that the database error log file has more than 9g. Open the content to see as follows: ===================================== 2020-07-08 13:47:43 0x7fe3723ff700 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 1 seconds —————– BACKGROUND THREAD —————– srv_master_thread loops: 28112548 srv_active, […]

  • Front end interview daily 3 + 1 – day 259

    Time:2021-3-4

    Today’s knowledge (December 31, 2019) – day 259 [HTML] how does HTML5 interact with native app? [CSS] do you know what CSS in JS is? Tell me what you know about it [JS] have you ever used extjs? What are its advantages and disadvantages? [soft skills] what are the GIT specifications in practice? In the […]

  • Front end interview daily 3 + 1 – day 508

    Time:2021-3-3

    Today’s knowledge point (2020.09.05) — day 508(I’m going to ask questions, too) [html] Please write a regular code to get the SRC address of all img tags in the HTML source code [css] Abbreviated flex:1 What is the complete way of writing? [js] If you want to implement a requirejs library yourself, what should you […]

  • Front end interview day 3 + 1 – 603

    Time:2021-2-27

    Today’s knowledge point (December 09, 2020) – day 603(I’m going to ask questions, too) [html] How to solve the problem of wechat browser video click automatic full screen? [css] What’s the difference between the value preserve-3d of the property transfrom of CSS3 and the value perspective? [js] Tell me about your understanding of built-in objects […]

  • Front end interview day 3 + 1 – 369

    Time:2021-2-27

    Today’s knowledge (April 19, 2020) – day 369 [HTML] implement a stick footer layout [CSS] use CSS to draw a burning candle [js] Geolocation.getCurrentPosition () for what? In which browser is not compatible? [soft skills] do you know the difference between pass, sass and last? In the Analects of Confucius, Zeng Zi said:“I think twice […]

  • Several problems must be considered in building websocket message push service

    Time:2021-2-26

    In recent years, whether it is the fast-growing live broadcast, distance education and IM chat scene, or the system reminder used in the conventional enterprise level system, the demand for websocket is increasing, and the demand for websocket is also increasing. From the early application of websocket was limited to a small number of functions […]

  • Wechat applet uses goeasy to realize websocket real-time communication

    Time:2021-2-25

    A series of articles: Wechat applet uses goeasy to realize websocket real-time communication Using goeasy to realize websocket real time communication in uniapp It doesn’t need to be downloaded and installed, and it can be quickly forwarded between wechat friends and wechat groups. Users only need to scan the code or click in wechat to […]

  • Front end interview daily 3 + 1 – day 611

    Time:2021-2-25

    Today’s knowledge point (December 17, 2020) – day 611(I’m going to ask questions, too) [html] Do you think there is anything wrong with HTML tags? Why? [css] What is the function of the @ extend instruction in sass? [js] Is null an object? [soft skills]Do you know what a cold start is? In the Analects […]

  • Front end interview day 3 + 1 – 569

    Time:2021-2-23

    Today’s knowledge point (November 5, 2020) – day 569(I’m going to ask questions, too) [html] What are the mandatory requirements of XHTML? [css] Why sometimes setting the width of an element doesn’t work? [js] How is closure formed? [soft skills]What is the difference between pipelining and non pipelining in version 1.1 HTTP protocol? In the […]

  • Angular2 learning notes service and http

    Time:2021-2-22

    At present, the application development is mostly based on the separation of the front and back of spa, and the front and back communication uses the HTTP interface to interact through JSON.angular2-demo 1、 Renderings 1. The effect shown 2. MySQL data 2、 Code instance 1. Serviceservice import {Injectable} from ‘@angular/core’; import { Http }from ‘@angular/http’; […]