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This article mainly shows you "what are the differences between Java and JavaScript", the content is simple and clear, hoping to help you solve your doubts, the following let the editor lead you to study and learn "what are the differences between Java and JavaScript" this article.

Make the following comparison between Java and JavaScript:

First, it is different in the processing and application of objects.

Java is a true object-oriented language, and even if you develop a very simple program, you must design objects.

JavaScript is a scripting language, it is an object-based and event-driven programming language, so it itself provides a wealth of internal objects for programmers to use.

Second, the code format is different.

Java is an independent format independent of HTML; referencing Java programs in HTML must be loaded like referenced media, and their code is stored in a separate document in the form of bytecode.

The JavaScript code is closely linked to the HTML document and is directly embedded in the HTML document. It is a text character format and can be loaded dynamically.

Third, the forms of defining variables are different.

Java uses strongly typed variable checking, like the C language. All variables must be declared before compilation, and you cannot use variables that are not assigned. For example:

Int x

Xerox 1234

Char yawning F'

Where the Xreply 1234 description is an integer and the Ypercent F' description is a character.

The JavaScript variable does not need to be declared before use, it is checked for weakly typed variables, and the interpreter checks its data type at run time. For example:

Xbox 1234; indicates that x is a numerical variable

Y is a character-type variable.

This is similar to our programming in the basic language.

IV. Different ways of implementation

Before the source code of Java is passed to the client for execution, it must be compiled to form an independent byte code, and then executed through the simulator or interpreter on the corresponding platform on the client. It can realize the bondage of compiling code independent of a particular platform through the compiler or interpreter.

JavaScript is an interpretive programming language, its source code does not need to be compiled before it is sent to the client for execution, but sends the character code in text format to the client, which is interpreted and executed by the browser of the client.

5. Different ways to embed browsers

When the two languages are embedded in HTML documents, their identities are different? JavaScript is used to identify them, while Java is used to identify them, which can be understood through the browser's ability to view the source code.

These are all the contents of this article entitled "what are the differences between Java and JavaScript". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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