Why can't vscode draw pictures?

Why can’t vscode draw pictures?

Drawing UML diagrams is based on markdown.

Recommended learning: vscode tutorial

Prepare the environment

First, install npm and cnpm [globally].

Because I have already installed it when I installed vue. Omitted here

1 Install the Markdown Preview Enhanced plug-in through vscode.

This plug-in provides the preview function of md files.

Right-click the content of the md file and select it.

2 Install puppeteer

puppeteer provides functions such as exporting pdf and html. Right-click to preview the image>> Chrome(Puppeteer)>> PNG to generate the image

sudo cnpm install -g puppeteer

Flowchart demo

Flowchart

```flow
st=>start: 流程开始
e=>end: 流程结束
 
op1=>operation: 选手准备
op2=>operation: 开始循环
op3=>operation: 执行循环语句
op4=>operation: 循环结束 
 
cond1=>condition: 准备好了么
cond2=>condition: 判断循环条件
 
 
st->op1->cond1
cond1(yes, right)->op2(right)->cond2
cond1(no)->op1
cond2(yes)->op3->cond2
cond2(no)->op4->e

Relationship diagram demo

Relationship diagram

```mermaid
graph LR
 
client1-->|read / write|SVN((SVN server))
client2-->|read only|SVN
client3-->|read / write|SVN
client4-->|read only|SVN
client5(...)-->SVN
SVN---|store the data|sharedrive

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