It allows more freedom in the creation of objects. JavaScript is a little more forgiving than Java. Many JavaScript commands are what are known as Event Handlers: They can be embedded right into existing HTML commands. It allows for fast creation of web page events. It is much easier and more robust than Java. In my opinion, JavaScript’s main benefit is that it can be understood by the common human. JavaScript is wholly reliant on the browser to understand it and make it come to life. The HTML document calls for the application, it downloads to the user’s cache, and waits to run. The delivery of the applet is done through a download. This includes the background color of the applet of the type of text it displays, etc. If the programmer allows it, oftentimes parameters can be set by the HTML document. Sure, they appear on the page, but the HTML document did little more than call for the application and place it. Java applets run independent of the HTML document that is calling for them (and Java is also what runs many appliances and mobile devices, and does not require a web browser). Sure, you can go back to the original text and alter it, but then you need to compile again. You can alter it after it runs and run it again and again. You write it to an HTML document and it is run through a browser. Nothing can be added to it and nothing can be subtracted without destroying the program. That smaller language is formatted so that it is seen by the computer as a set program with definite beginning and ending points. Basically what happens is after the programmer writes the Java program and checks it for errors, he or she hands the text over to another computer program that changes the text code into a smaller language. Java must be compiled into what is known as a “machine language” before it can be run on the Web. JavaScript is text that is fed into a browser that can interpret it and then it is enacted by the browser–although today’s web apps are starting to blur the line between traditional desktop applications and those which are created using the traditional web technologies: JavaScript, HTML and CSS.Īnother major difference is how the language is presented to the end user (that’s you when you’re surfing). A Java “applet” (so-called because it is a little application) is a fully contained program. Java is a much larger and more complicated language that creates “standalone” applications. The main difference is that Java can stand on its own while JavaScript must (primarily) be placed inside an HTML document to function. Now let’s talk about how Java and JavaScript differ. Moving along… Key Differences Between Java and JavaScript The point is that in these languages, you build objects out of classes of commands to create the whole. Ditto with the body and then the interior. The point is that all the parts that made up the engine were of a certain class of parts. The sum of the objects (parts) make up the whole.Ĭontinuing with the model car example, when you built the engine, you didn’t use any of the parts that would later build the seats (a 350 four-barrel engine with a seat belt sticking out if the piston would look pretty silly). But it is not a fully functioning car until all the pieces are put together. Finally, you build the interior including the seats, steering wheel, and whatnot. It is an engine and everyone can see it’s an engine. Think of it this way: you are building a model car. Object Oriented Programming is a relatively new concept, whereas the sum of the parts of a program make up the whole. You may be wondering what OOP means by now. It is easier for the average weekend warrior to understand. However, JavaScript contains a much smaller and simpler set of commands than does Java. Many of their programming structures are similar. JavaScript is a (very) distant cousin of Java in that it is also an OOP language. JavaScript is a scripting language that was created by the fine people at Netscape and was originally known as LiveScript. Java is an Object Oriented Programming (OOP) language created by James Gosling of Sun Microsystems. They are both similar and quite different depending on how you look at them. What is the Difference between Java and JavaScript
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |