[required] analysis of the real problem

Working in front-end development is almost 3 Years. , Xiao Bai doesn't know anything from his theory and practice , And I'm also right about this 3 Over the past years, there has been a sort of study and practice , For the future to recall the taste of .

1、 Why choose to learn front-end development ？

You may be interested in , Finish a website 、 page 、 A sense of functional accomplishment . You may also be because the front-end jobs are so popular , The employment rate is high . No matter what , As long as you find the right target , Just learn ！

Interview questions

HTTP、 browser

1, What are the ways that browsers store

2, Can we talk about the front and back cross domain ？ How to solve cross domain ？

3, browser  cookie  and  session  The understanding of .

4, Input URL What happened? ？

5, Browser rendering steps

6, Page rendering optimization

7, Force cache and negotiate cache

8,GET  and  POST  Differences in requests

9,HTTP1.0 / 1.1 / 2.0  And HTTPS

10, introduce 304 The process

11,HTTP  Status code

12,Web performance optimization

CSS

1, The box model

2, How to achieve a largest square

3, A line is centered horizontally , To the left

4, Horizontal vertical center

5, Two column layout , Fixed on the left , Right adaptive , Left and right do not overlap

6, How to realize left and right equal height layout

7, Draw a triangle

8,link @import Import css

9,BFC understand

JS

1, Judge  js  Type of way

2,ES5  and  ES6  Declare variables in several ways

3, The concept of closures ？ Advantages and disadvantages ？

4, Shallow copy and deep copy

5, Array de duplication method

6,DOM  What are the stages of the event ？ Talk about the understanding of event agent

7,js  Execution mechanism 、 The event loop

8, introduce  promise.all

9,async  and  await,

10,ES6  Of  class  The difference with constructors

11,transform、translate、transition  What are the attributes of each ？CSS  Commonly used in the implementation of animation ,

12, Introduce to you rAF(requ 

《 Analysis of front-end interview questions in large factories +Web Core summary learning notes + Enterprise project actual combat source code + HD explanation of the latest video 》 Free open source Hui Xin search official account 【 Advanced programming 】

 estAnimationFrame)

13,javascript  The garbage collection mechanism of ,

14, What do you know about front end performance optimization ？ It is generally optimized through those aspects ？

Vue

1,Vue  Two way binding principle ,

2, Describe below  vue  From initialization page -- Modifying data -- Refresh the page  UI  The process of ？,

3, How do you understand  Vue  In response to the system of ?,

4, fictitious  DOM  Realization principle ,

5, since  Vue  Data hijacking can accurately detect data changes , Why do we need to be virtual  DOM  Conduct  diff  Detect differences ?,

6,Vue  in  key  The role of value ？

7,Vue  Life cycle of ,

8,Vue  What are the ways of communication between components ?,

9,watch、methods  and  computed  The difference between ?

10,vue  How to reset  data?,

11, Component  name  What's the use of options ？

12,vue-router  What hook functions are there ?

13,route  and  router  What's the difference ？

14, The way  Vue  and  React  The understanding of , Make a simple comparison

（1） The implementation principle of monitoring data change is different

（2） The difference in data flow

（3） Different ways of template rendering

15,Vue  Of  nextTick  What is the principle of ？

（1） Why  nextTick

（2） Preparation before understanding the principle

（3） understand  nextTick

16,Vuex  What are the attributes ?

17,vue  First screen loading optimization

18,Vue 3.0  Have you ever understood ？

19,vue-cli  What did you do for us ？

Vue

• What is? MVVM？

• mvvm and mvc difference ？ It and other frameworks （jquery） What's the difference ？ Which scenes are suitable for ？

• Values passed between components ？

• Vue  Two way binding principle

• Describe below  vue  From initialization page – Modifying data – Refresh the page  UI  The process of ？

• fictitious  DOM  Realization principle

• Vue  in  key  The role of value ？

• Vue  Life cycle of

• Vue  What are the ways of communication between components ?

• vue  How to reset  data?

• Component  name  What's the use of options ？

• Vue  Of  nextTick  What is the principle of ？

• Vuex  What are the attributes ?

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