Web front-end development is equivalent to the front-end, you can visualize the things on the browser belong to the front-end. Corresponding positions are front-end development engineers, senior front-end development engineers, website refactoring engineers, front-end architects and so on, you need a solid foundation in JavaScript language, with good specification of the development habits; familiar with the commonly used design patterns, proficient in the use of Vue, Angular technology stack development; be able to skillfully use angular, vue, echarts, jquery, react and other frameworks for traditional development; to be familiar with MVVM, MVC development model; familiar with front-end engineering, automation technology, can be configured according to the needs of the Gulp file and change the Webpack configuration file; skilled in the use of git version management tools.

2. java is a back-end language, similar to php, the main thing to do is to build the database, as well as the data placed into the web page, java is a more complex programming language, is currently widely used in web development, Android development and big data development field, and the Java language is not only a common tool for the application level programmers, R & D level Programmers will also use Java to complete the project development, so learning Java will also have more employment opportunities.