英语学习笔记2019-11-29

英语学习笔记2019-11-29

Now we're living in a network-based information era and the Internet is closely related to our study, work and life.

When you're so busy with your work that you have no time to make a meal, you may call for a takeout via some apps such as Meituan app.

LBS: Location-Based Service

Planned Economy --> Market Economy

Certainty                        Uncertainty

Question: What's the most essential characteristic of the current information era?

This era is filled with uncertainties.

There are many possibilities in the real world.

Random phenomenon: 随机现象

Math: Probability Theory

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Web Development -- Web Developer

Static Website ~ Dynamic Website

Website -- Web Pages (The first page of a website is called the Homepage.)

Front End - 前端

1. HTML (HyperText Markup Language) -- Content / Structure
2. CSS (Cascading Style Sheet) -- Style / Appearance
3. JavaScript -- Behavior

Back End - 后端

1. PHP (Think PHP, Laravel )
2. Java EE (SSM, Spring Boot)
3. Python Web (Django, Flask....)
4. ASP.NET

Database -- DBMS (Database Management System)

1. SQL Database: MySQL, Oracle, SQL Server 2018, DB2
2. NoSQL Database: MongoDB, Cassandera, CouchDB...

W3Schools.com

 

Task 1. Set the color of the <p> element to red.

Method One: using <font> tag

Method Two: using the inline style

Method Three: using the inner style

Method Four: using the outer style

Task2. Add a button, and change the color of the <p> element to blue when you click the button.

 

Now let's take a look at something about PHP.

 

Click [Run Example] button and see the result:

Task1. Show the current time of the server side in the format of yyyy-mm-dd hh:mm:ss.

The time is not the time in our time zone, please modify the code to set the time zone of China.

Task 2. Print the result like the following graph.