html5 part ：
html5 What are the new attributes ? How to understand semantic tags ? What do you think of modular front end ? How to treat the separation of front end and rear end ? Browser compatibility issues ? You know the in line elements , What are the block level elements ?
id And class What's the difference? ??
css part ：
Why initialize css style ? link and @import The difference between ? css Style priority for ? Box model ? How to clear float ? How to center elements horizontally and vertically ?
With pure CSS What is the principle of creating a triangle ?
<> Common layout ：
*
Floating layout ：float:left/right
*
Positioning layout ：
position:static： Static layout
absolute： Absolute positioning
relative： Relative positioning
fixed： Fixed positioning
sticky： Viscous positioning
*
Expansion box layout ：
display:flex;
Reasons for use ： When using float When block level elements are displayed on one line , Browser scaling , Upset , as a result of , Browser zoom , The content of the element shrinks , The borders and margins do not shrink , The whole goes beyond the parent element , Make the layout disordered .
* grid layout ：
quote bootstrap The required components are OK
js part ：
*
js What are the data types of ?
*
Deep replication , Shallow replication ?
*
var,let,const The difference between ??
*
character string , Common methods of array ??
*
Array de duplication （splice,set,indexOf）??
*
What are the ways of inheritance （ Prototype chain inheritance , Constructor inheritance , Combinatorial inheritance ）
*
Cross source problem
*
What are the main ways of front end storage , What's the difference? （sessionStorage,localStorage,cookie）
*
Timeout call （setTimeout） And intermittent calls （setInterval） What's the difference? ?
*
call and apply What's the difference? ?
*
closure ?
*
Event agent ?
*
this?
Vue part ：
* vue Declaration cycle for
* Why use it vue??
* vue How to achieve bidirectional data binding （ Data driven framework , be based on mvvm pattern ）
* Talk about your understanding of state machines vuex Understanding of
* Describe vue-router How does it work ?
* How do components communicate （ Between parent and child components , Between brother components ）
* computed and watch The difference between ? What kind of scene ?
* How do you understand slot （slot） Of ?
* Custom instruction （directive）?
* Routing mode （hash and history The difference between ）?
* axios And jquery The difference between ?
* less Precompiled language and css The difference between ? Why use it less
* v-if And v-show What's the difference? ?
* key?
* State machine vuex?
es6 part ：
* Promise
* es6 What are the new features ?
* The difference between arrow function and ordinary function ?
* Solving asynchronous problems （ Encapsulation function ,generator function , Asynchronous function async）
html5 Api and jquery part ：
* canvas canvas
The interviewer asked ： Is there anything you want to ask me ?
1. Is our company an outsourcing company ? 2. What are the requirements for promotion ? 3. What technology stack does our company use ? 4. If you are lucky enough to enter our company , What else do I need to prepare ?
Technology