An in-depth analysis of the advanced usage of vue2.x

Vue is one of the most popular front-end frameworks currently. Its design concept is elegant, simple and easy to master. This article will introduce the advanced usage of Vue2.x, covering Vue's template syntax, component development, routing and state management, etc.

1. Template syntax

1. Conditional rendering

Conditional rendering in Vue is done through v-if, v-else, v-show and other instructions accomplish. v-if and v-else are used for mutually exclusive situations, and v-show is used to switch between showing and hiding.

2. List rendering

List rendering in Vue is implemented through the v-for directive. You can traverse and render an array into a set of DOM elements, and you can also bind indexes, use object properties, etc.

3. Form binding

Form binding in Vue is very convenient. Two-way data binding can be achieved through the v-model directive. Modifiers can also be used to filter or transform data.

2. Component-based development

Vue’s component-based development is one of its biggest features. By abstracting complex UI elements into components, code reusability and maintainability can be improved.

1. Component registration

The registration of Vue components is implemented through the Vue.component() function. A component must contain options such as template, props, and data, and can also contain options such as computed, methods, and watch.

2. Component communication

In Vue, there are two ways of component communication: parent-child component communication and sibling component communication. Communication between parent and child components can be achieved through props and $emit, while communication between sibling components needs to be achieved through a common parent component or Vue instance.

3. Routing

Vue routing can be implemented through Vue Router. It can help us manage page routing in single-page applications, and provides routing navigation control, routing guard and other functions.

1. Routing configuration

In Vue Router, routing configuration is achieved through the routes option of the Router instance. Each routing object can contain path, component, name and other options.

2. Routing Navigation

Routing navigation and access control are common requirements. Vue Router provides routing hooks such as beforeEach, beforeResolve and afterEach to implement routing access control.

4. State Management

State management is another major feature of Vue. All states in our application can be managed through Vuex, including global state and component-private state.

1. State Storage

In Vuex, state is stored in a Store object. A Store object contains all the state in our application and some methods for changing the state.

2. State change

State change is achieved by submitting a mutation, and the submission of mutation needs to be triggered by commit. The state can be modified synchronously through mutation, and asynchronous state changes can be achieved using action.

The above is the advanced usage of Vue2.x. Through in-depth study and application of these technologies, we can better use the Vue framework to develop efficient, elegant, and easy-to-maintain applications.

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