HTML5 cross-platform development

Research on the development of cross-platform mobile APP based on HTML5

With the continuous development of mobile network development technology, smart phones are getting faster and faster, with more and more functions, and a large number of APP applications have emerged. However, at present, mobile network development is still dominated by native APP development, and the same application needs to develop different native APP applications for different smartphone systems. For example, if you want to play the currently popular defending radish game on a traditional desktop computer, you need to download and install the PC version of the game installation package; if you want to play it on the iPhone, you need to download and install the iPhone version of the game APP installation package; If you want to play on an Android phone, you need to download and install the Android version of the game APP installation package. This requires game developers to develop corresponding clients for different platforms, which not only increases the difficulty of development, but also increases the maintenance cost. Therefore, timely research on HTML5-based cross-platform mobile APP development has certain practical significance.

1. The concept of HTML5 and cross-platform

The so-called HTML5 refers to the fifth-generation HTML standard, referred to as H5, and can also be understood as the fifth version of the HTML standard. In a broad sense, H5 generally includes HTML, CSS3, and JAVAScript. Most browsers currently support HTML5.

The so-called cross-platform refers to writing code once, which can run on multiple system platforms, without having to develop corresponding clients according to different platforms, and can be developed and maintained under multiple platforms. At present, many languages have achieved cross-platform , such as JAVA, Delhi, Python and HTML5, etc.

2. Advantages of using HTML5 to develop platform-expanding mobile APP

(1) Cross-platform: In the native APP development mode, developers need to develop corresponding APP clients for different system platforms. For example, iOS platform needs to use OC or Swift to develop iOS APP client, and Android system platform needs Use JAVA or Kotlin to develop Android APP client. However, HTML5 has the advantages of cross-platform, can get rid of the restrictions of the system platform, and has better cross-platform characteristics.

(2) Semantic features: HTML5 has the advantage of clear semantics. It endows mobile APP with better meaning and structure, making the code clearer and easier to maintain and read by maintainers or other developers.

(3) Local storage: HTML5 has storage advantages. It usually stores cached data locally, which is better than cookies and has faster performance. It can store user information and cached data locally without third-party plug-ins, even if you exit It can also be saved locally, and the state of the last runtime can be loaded when the user uses it again.

(4) Open data exchange: HTML5 can easily exchange data with other APP applications. For example, when a user views a certain product on an HTML5-based shopping APP, the browsing data will be cached on the mobile phone. If the shopping APP allows If other apps view this part of the cached data, other apps can easily obtain and use the data. For example, other news apps can obtain open data in this way and deliver targeted advertisements.

(5) Strong multimedia functions: HTML5 can support more media without third-party plug-ins. It not only has good video and audio support, but also has good 3D support, making the cross-brand mobile APP based on HTML5 The interface is more colorful.

(6) High security: Compared with Flash and Cookie, HTML5 has higher security, and adopts sandbox mechanism, filtering measures and security policies to improve security, thus ensuring the security of cross-platform mobile APP based on HTML5. safety.

(7) Rich API HTML5 has added a large number of APIs, which are convenient for developers to implement more complex functions by simply calling them, reducing the difficulty of development and improving development efficiency.

3. The development strategy of cross-platform mobile APP based on HTML5

3.1 Selection of cross-platform mobile APP development scope

Not all mobile apps are suitable for developing with HTML5. The main points are as follows: ① The performance of native apps is undoubtedly the fastest. Under the same functional conditions, the running speed of cross-platform mobile apps based on HTML5 is definitely not as good as that of native apps. Fast, so mobile apps with high speed requirements are not suitable for development with HTML5. ②Although the mobile APP developed by HTML5 has the advantages of cross-platform and data exchange advantages of local storage and development, important data is easily leaked to other mobile APPs, which may easily lead to important data being stolen by malicious mobile APPs. Stand-alone mobile apps are not suitable for development with HTML5. ③ HTML5-based cross-platform mobile APP development is suitable for application scenarios with servers, that is, important data is stored on the Web server, and the cross-platform mobile APP client developed with HTML5 only queries and receives data, and only caches unimportant data to the server. Local, open data exchange with other APPs. At present, most mobile applications are such applications, so using HTML5 to develop cross-platform mobile APP has great potential.

3.2 Selection of cross-platform mobile APP development tools

There are many tools for developing cross-platform mobile APPs using HTML5, such as PhoneGap, WeX5 and Hbuilder, etc. The details are as follows: ①Phone-Gap appeared first, and it can quickly realize cross-platform mobile APPs using HTML5, and has very strong cross-platform advantages. Compliments Apple, Android, WinPhone, BlackBerry and other platforms, but the performance is slightly worse, and debugging is more difficult. ②WeX5 is an excellent domestic mobile APP development tool, which is developed based on PhoneGap. It can also use HTML5 to quickly develop cross-platform mobile APP, but its performance experience is not good, the number of users is small, there are unstable factors, and the lack of third-party SDK support. ③Hbuilder is a mobile APP development tool launched by Digital Paradise in China. It is mainly written in JAVA, and some programming languages such as C and Ruby are used. It has complete and detailed syntax prompts and rapid development templates, which can greatly improve the development efficiency of cross-platform mobile APPs.

3.3 Selection of cross-platform mobile APP technology framework

The technical framework of cross-platform mobile APP development based on HTML5 mainly includes the following two:

(1) A hybrid architecture based on Web technology. This architecture is based on native Web containers, and the Web applications written in HTML5 are packaged on native Web containers, thus forming a hybrid architecture based on Web technologies. This framework can make full use of the original Web code, and has the advantages of reducing development difficulty and maintenance cost.

(2) Native-based hybrid architecture, which is based on native technology, mobile APP functions are mainly realized through native technology, and only the interface is implemented using HTML5. This architecture can give full play to the performance of native technology and has performance advantages, but it is relatively difficult to implement.

3.4 Prospects of Cross-platform Mobile APP Development

To sum up, there are great advantages in using HTML5 to develop platform-expanding mobile apps. It can improve the efficiency of cross-platform development and reduce the cost of development in business. Technically, HTML5 has changed the pattern of mobile Internet in just a few years. It greatly reduces the scope of application of native APP.

Summarize

This article conducts research on the development of HTML5-based cross-platform mobile APP, introduces the concept of HTML5 and cross-platform, expounds the advantages of using HTML5 to develop platform-expanding mobile APP, and puts forward the development strategy of HTML5-based cross-platform mobile APP. After a long period of development practice, it is found that using this strategy can effectively use HTML5 to realize cross-platform mobile APP development, which not only reduces the difficulty of development, but also greatly reduces maintenance costs, which has a certain reference value.

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