Java and javascript look so similar, so are they the same thing? Let me reveal the answer now!
JavaScript is an embedded script file that is directly inserted into a web page and has a browser to interpret and execute.
The java language is different, it must run on the JAVA virtual machine. And it needs to be compiled in advance.
The syntax rules of JAVA are much stricter than JavaScript and have much more powerful functions.
First of all, these two guys have no blood relationship. Java was launched by Sun in May 1995, and JavaScript was designed and implemented by Netscape in 1995. Since Netscape cooperated with Sun, Netscape executives hoped that it would look like Java, so they were named JavaScript.
Secondly, the essence of these two guys is different. Java is an object-oriented programming language that can write cross-platform application software. Even when developing simple programs, objects must be designed; JavaScript is a literal scripting language that itself provides a very rich internal objects for designers to use.
And their execution methods are also different. Java is a language between interpreted and compiled languages. Before being passed to the client for execution, the source code of java must be compiled and through the interpreter on the corresponding platform, it can achieve the constraints of compiling code independently of a specific platform. JavaScript is an interpretive programming language. Its source code does not need to be compiled before being sent to the client for execution. Instead, it sends character code in text format to the client for interpretation and execution.
Secondly, the uses of the two are also different. Java is widely used in personal PCs, data centers, game consoles, scientific supercomputers, mobile phones and the Internet, etc., while Javascript uses: 1. Embed dynamic text on HTML pages; 2. Respond to browser events; 3. Read and write HTML elements; 4. Verify data before the data is submitted to the server; 5. Detect the visitor's browser information; 6. Control cookies, including creation and modification, etc.
The above is the difference between JavaScript and Java introduced by the editor. I hope it will be helpful to you. If you have any questions, please leave me a message and the editor will reply to you in time. Thank you very much for your support to Wulin.com website!