What's the difference between JavaScript and Java?

 What is Javascript?

It's a scripting language that runs in a browser, and Javascript can do almost anything on a Web page:

HTML can be manipulated, providing a tool to change HTML at runtime. Events can be attached and executed, in line with the idea of event-oriented programming. The data verification function verifies the validity of the form of data when submitting the form. The operation of the client's browser: forward, backward, refresh, jump, open a new window, print, etc. Cookies can be created and used.

What is Java?

Java is a programming language introduced by Sun. It is an interpreted language with syntax rules similar to C++. Java is also a cross-platform programming language. The program written in Java language is called "Applet" (small application program). After compiling it into class files by the compiler, it is stored in the WWW page and marked on the HTML file accordingly. As long as the client software of Java is installed, the client can run the "Applet" directly on the network. Java is well suited to enterprise networks and Internet environments and is now one of the most popular and influential programming languages on the Internet. Java has many remarkable advantages, such as simplicity, object-oriented, distributed, interpretability, reliability, security, structural neutrality, portability, high performance, multithreading, and dynamism. Java dispenses with C++ features that do more harm than good and many that are rarely used. Java can run on any microprocessor, and programs developed in Java can be transmitted over the network and run on any client.

Different data types

Java has eight data types: byte, short, int, long, float, double, char, and Boolean, while JavaScript has three data types: number, String, and Boolean.

In addition, there are differences in Java and Javascript variables.

They are positioned differently

Unlike Java, which is a completely object-oriented programming language that requires you to design objects before you can write in Java, JavaScript is an object-oriented scripting language that provides developers with built-in objects, making it easier and less time-consuming.

Link in different ways

Unlike Java, which USES static linking, where object references must be made at compile time and the compiler needs to implement strong type checking, JavaScript USES dynamic linking, where object references can be checked at run time.

Different USES

The most essential difference between them is their usage. At present, Java is widely used in PC terminal, mobile terminal, Internet, data center, and so on, while JavaScript is mainly used to embed text into HTML pages, read and write HTML elements, control cookies, and so on.

Java and JavaScript have different strengths and different specialties. The Java arena is programming, while JavaScript's heart is in Web pages, where it can do almost anything.




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