Front end interview day 3 + 1 – 289

Time:2021-2-16

Today’s knowledge (January 30, 2020) – day 289

  • [HTML] how can the mobile terminal save the picture by long press (the QR code on the picture is dynamic)?
  • [CSS] using CSS to realize tab switching
  • [JS] tell me about your understanding of PostMessage. What are its application scenarios?
  • [soft skills] illustrate your understanding of front end engineering

In the Analects of Confucius, Zeng Zi said:“I think twice every day”I reflect on myself many times a day.
Front end interview daily 3 + 1 questions, to interview questions to drive learning, a little progress every day!
Let efforts become a habit, let struggle become an enjoyment!
believeinsistThe power of the world ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!!!

Welcome toIssuesDiscuss and study with friends!

Project address: front end interview daily 3 + 1
[recommended] welcome to work with jsliang on the front end to sort out the front-end knowledge systematically. At present, we are working on leetcode to get through the two channels of algorithm and data structure. GitHub address

WeChat official account

Welcome to discuss. If you think it is helpful to your study, please click hereStarAt the same time, we welcome wechat scanning attentionFront end sword solutionThe official account and join“Front end learning 3 + 1 every day”WeChat group exchanges (click on the official account menu: group communication).

Front end interview day 3 + 1 - 289


  • Learning doesn’t close, charging only forMeet a better self, 365 days without holidays,Every morning at 5 o’clockManual release of interview questions(I’ll be happy with myself)。
  • I hope you are herePompousIn the front circle, keepchill, insist on spending 20 minutes every day to study and think.
  • In this ever-changing front-end, class libraries emerge in endlessly. I suggest that you do not wait until you are looking for a jobDaily study!(Remain true to our original aspiration, HTML, CSS, JavaScript are the cornerstone!)
  • Welcome toIssuesCommunication, encouragementPRThank youStarIf you have any good suggestions, you can discuss them with me on wechat!

I hope you alleverydayTo learn and think, this is to achieve the purpose of coming here!!! Don’t come for anyone, come for yourself

Exchange and discussion

Welcome to discuss. If you think it is helpful to your study, please click here[Star]
https://github.com/haizlin/fe…

Recommended Today

Redis design and implementation 4: Dictionary Dict

In redis, the dictionary is the infrastructure. Redis database data, expiration time and hash type all take the dictionary as the underlying structure. Structure of dictionary Hashtable The implementation code of hash table is as follows:dict.h/dictht The dictionary of redis is implemented in the form of hash table. typedef struct dictht { //Hash table array, […]