Let's talk about the difference between jquery and mvvm

jQuery and MVVM are two different technologies in front-end development. jQuery is a JavaScript library, and MVVM is an architectural pattern. While they both help build interactive and dynamic web applications, they have many differences.

1. Purpose

The purpose of jQuery is to more conveniently use JavaScript to operate the DOM and handle events. By adding some simplified APIs, encapsulating some common operations, and solving browser compatibility issues, jQuery makes front-end development easier.

The purpose of MVVM is to decouple view (View) and data (Model), making development easier to maintain. MVVM separates data from views and interacts with them through ViewModel. Data changes are automatically reflected in the views.

2. Application scenarios

jQuery is mainly used for DOM operations, event processing, Ajax requests, etc. It is suitable for simple applications with a single page, such as building personal blogs, corporate official websites, etc.

MVVM is suitable for large web applications because it provides better modularity and maintainability. For example, when you need to change a module, you only need to adjust the ViewModel of the module without having to operate the view and data layers.

3. Programming style

jQuery mainly adopts the imperative programming style, that is, tasks can be completed through multiple API methods. For example, select an element with a selector and then use the .css() function to style it.

MVVM adopts a declarative/functional programming style, that is, defining functions through declarative statements. For example, by defining a binding expression, then parsing the value of the expression in the ViewModel, and then reflecting the value to the View.

4. Data flow

In jQuery, data flow is mainly one-way. When the user manipulates a DOM element, jQuery reads data from the DOM and then changes the corresponding element using the jQuery API.

In MVVM, data flow is bidirectional. When the user changes data in the ViewModel, the data is transformed and updated into the view, and vice versa.

To sum up, both jQuery and MVVM have their unique uses. jQuery is mainly suitable for those small, simple applications, while MVVM is suitable for those large, maintainable, modular web applications. At the same time, the programming styles and data flows of jQuery and MVVM are also very different, which also affects the use of these two technologies. Therefore, developers should choose the appropriate technology based on actual needs.

The above is the detailed content of Let's talk about the difference between jquery and mvvm. For more information, please follow other related articles on the PHP Chinese website!