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In this tutorial, we will learn how to develop a zero knowledge identification DApp based on Ethereum, how to develop a zero knowledge circuit of circle, how to generate and verify a solid zero knowledge smart contract, and how to generate zero knowledge evidence under the chain using Javascript, and provide a complete source code download at t ...

As we all know, in vue, if you want to define a global variable method is very simple, you can directly mount attributes or methods on the prototype of vue. However, with typescript added Vue.prototype $XXX = XXX is not a good way to mount. No matter where you are, you can't access the content. It's not on the Vue prototype either. Then what s ...

1, Type alias TypeScript provides a convenient syntax for setting aliases for type annotations. You can use type SomeName = someValidTypeAnnotation to create aliases, such as: type Pet = 'cat' | 'dog'; let pet: Pet; pet = 'cat'; // Ok pet = 'dog'; // Ok pet = 'zebra'; // Compiler error   2, Basic knowledge In order to better underst ...

Jest and enzyme front end unit testing tools What is Jest? Jest is a delightful JavaScript testing framework that focuses on simplicity. It is suitable for projects using Babel, TypeScript, Node, React, Angular, Vue, etc! Characteristic Zero configuration snapshot Isolated Great api Introduction Use yarn to install jet: yarn add --dev jest ...

1. Editing Excel Online At this stage, the background management system needs to realize the function of online excel editing in many times. The main advantages are as follows: 1. Browse and edit excel files online (cross-platform, zero-dependence, always inconvenient to install Microsoft office) (2) File management, rights control (data sec ...

SOLID Principles Single Responsibility Principle (SRP): Components (functions, classes, modules) must focus on a single task Open/Close Principle (OCP): Consider scalability when designing, but modify the original code at least when extending Richter Replacement Principle (LSP): Any class in a pr ...

1. Implement the Vue component of TypeScript. Take Types component as an example to rewrite JS writing <template> <div> <ul class="types"> <li :class="type === '-' && 'selected'" @click="selectType('-')">expenditure</li> <li :class="type === '+' && 'selected'" @cl ...

Original address: Using typescript to transform koa development framework Strong TypeScript development experience and maintenance projects have obvious advantages over JavaScript, so it is necessary to transform the commonly used scaffolds. Next, we start to transform the node back-end scaffold based on the koa framework: The construction of ...

Preface The content of TypeScript fragrance series will be referenced Chinese Documents However, the examples in this paper will not duplicate those in the document, and will be studied in some places.In addition, the results of some of the examples in this article are compiled into JavaScript without ...

The implementation of Vue data response system based on ES6 agent model 1. Tool preparation The required environment is as follows: Node environment (babel) TypeScript Knowledge reserve needed: Introduction to ES6 standard 2. way of thinking 2.1 overall structure The overall structure of the ...