Front-end interview daily 3+1-day 894

Today's knowledge points (2021.09.26)-Day 894 ( I also have to the question 161581891c4cd1)

• [html] The page written in html5 is called to the app or applet and found to be blank. How to troubleshoot?
• [css] Explain the role of nth-child(3n+1) in
• [js] write a method to generate a random color string, the legal color is #000000-#FFFFFF
• [Soft Skills] Tell me about your understanding of virtual scrolling

"The Analects", Zeng Zi said: "My day and my body are three (I reflect on myself many times a day).
Front-end interview 3+1 questions every day, use interview questions to drive learning, and make a little progress every day!
Let hard work become a habit, let struggle become a kind of enjoyment!
Believe that insists on the power of ! !

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[Recommendation] Welcome to toss the front-end with jsliang, organize the front-end knowledge systematically, and currently toss LeetCode, intending to get through the two channels of algorithm and data structure. GitHub address

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• Learning does not close, charging and refueling is only for meet a better self , 365 days without holidays, hand-published interview questions every morning at 5 o'clock in the morning yourself, everyone 161581891c5087).
• I hope everyone in this exaggerated front-end circles, keeping calm , adhere to 20 minutes a day spent learning and thinking.
• In this ever-changing, endless stream of front-end library, I suggest that you do not wait to find a job before the crazy brush problems, promote daily learning ! ( not forget the original intention , html, css, javascript are the cornerstones!)

• Welcome to Issues communicate, encourage PR , thank Star , if you have any good suggestions, you can add me to WeChat to discuss together!

  I hope you can learn and think every , so that you can achieve the purpose of coming here! ! ! (Don't come for anyone, come for yourself!)

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