Front-end students have great benefits, the most comprehensive interview questions, and the most comprehensive front-end

Front-end students have great benefits, the most comprehensive interview questions, and the most comprehensive front-end

I have sorted out some interview questions about the front-end industry, and I NEED AV .......

HTML & CSS

(Q2) the better is the 3rd method, which is used by many websites.

(Q1) box-sizing: content-box | border-box | inherit;
(Q2) content-box: content boxes that apply the width and height to the elements respectively. Draw the padding and border of the element beyond the width and height (default effect of the element ). Border-box: Any padding and border specified by the element will be drawn within the configured width and height. The width and height of the content can be obtained by subtracting the border and the padding from the configured width and height.

JavaScript

Undefined, Null, Boolean, Number, String

Data encapsulation objects: Object, Array, Boolean, Number, and String
Other Objects: Function, Arguments, Math, Date, RegExp, and Error

Avoid using eval, Which is unsafe and extremely performance-consuming (2 times, resolved to js statements at a time, and executed at a time ).
You can use eval, var obj = eval ('+ str +') to convert a JSON string to a JSON object ')').

Null:
(1) As a function parameter, it indicates that the function parameter is not an object.
(2) serves as the end point of the object prototype chain.

Others