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1 line chart The data effect displayed when the mouse is placed on the point is used in the code tooltip this parameter, where The default value of show is true, which can be omitted. When we don't want to display the floating prompt effect, change show to false. trigger sets this parameter. The effect i ...

Test Hooks' proficiencyWhy can't Hooks be used in for loops and if statementsReact.memo,React.useCallback,React. The role and comparison of usememoThe value in useState is an object. If you change the value in the object, will the component render? If you use react It's wrapped in memo()What is the (Implementation) principle of Hooks?What is th ...

This is a personal note, not a tutorial. It is recommended to read the original text. Although it is longer, it is still very advantageous to try it two or three times. If you have problems, you can communicate with each other. Original address: https://overreacted.io/zh-hans/a-complete-guide-to-useeffect/ Author profile: https://overreacte ...

1, Bable introduction Is a separate tool, independent of webpack, but can be used with webpack Function: convert es6 or typescript into ordinary js code Scenario: for example, an old browser doesn't know demo Arrow function of es6 in JS Used alone (when not used with webpack): npm install @bable/core @bable/cli@bable/core @bable/cli -D ...

When deploying the external network of the project, data encryption transmission is often required, especially for the projects of enterprises and institutions. In addition, for security or red header files, the national secret algorithm is often required. Because interaction is involved, SM2 asymmetric encryption is used. Back end (Springboot ...

In applet development, it is necessary to obtain the interface request arrayBuffer data, converted to base64 format data for picture display. Wechat applet provides Wx Arraybuffertobase64 method, but unfortunately, this method has been abandoned since the basic library version 2.4.0 and is no longer recommended. Although at present, eve ...

vue.config.js configuration item After the vue-cli3 scaffold is erected, there is no Vue in the project directory config. JS file, which needs to be created manually Create Vue config. js vue. config. JS (equivalent to the previous webpack.config.js) is an optional configuration file. If this file exists in the root directory of the projec ...

Early installation vue cli installation sudo npm install -g @vue/cli function: vue ui The localhost:8000 page opens automatically mysql installation (optional) Download address: https://dev.mysql.com/downloads/mysql/5.6.html , find the appropriate dmg version to downloadClick dmg to install step by stepConfigure environment variables ( ...

1 create project vue create app If the vue cli version is below 3, it needs to be upgraded. create is the usage of 3 npm uninstall -g vue-cli npm install -g @vue/cli npm install -g @vue/cli@4.5.13 Note: to use Vue cli v4 five point one three Vue cli v4 5.13 I installed Vue cli V5 0.1, there is a problem when configur ...

Article catalogue NodeJS environment configuration MAC configuration Installation mode 2:node version management: Linux configurationWindows configuration Development environment initialization Basic environmentBaidu OCR dockingMy example code Docker deploymentLittle knowledgePuppeter syntaxError summaryMy blog NodeJS en ...