What is the main function of javascript

Main functions: 1. Embed dynamic text in HTML pages; 2. Read and write HTML elements; 3. Respond to browser events; 4. Verify data before it is submitted to the server; 5. Detect visitors Browser information; 6. Control cookies, including creation and modification; 7. Server-side programming based on node.js technology, etc.

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

Students who study programming are no stranger to JavaScript. JavaScript is a very important content in front-end technology. For example, page effect switching, animation effects, page games, etc. In fact, we can already build various styles of pages through HTML and CSS technology, but to achieve the truly dynamic effect of the page, you also need to use JavaScript technology.

Encyclopedia definition JavaScript is a literal scripting language, a dynamically typed, weakly typed, prototype-based language with built-in support for types. Although JavaScript uses the name Java, there is actually no relationship between JavaScript and Java.

What is the main function of JavaScript?

As mentioned above, JavaScript can achieve page effect switching, animation effects, page games and other effects. JavaScript, however, takes on more responsibility. Especially with the rise of Ajax technology, the user experience of the website has been greatly improved. For example, when people enter a few words in Baidu's search box, the web page will intelligently sense what the user is going to search for next, and a drop-down menu will appear. The realization of this effect is inseparable from JavaScript. In addition, the use of JavaScript is not limited to browsers. The emergence of Node.js allows developers to write JavaScript code on the server side, making JavaScript more widely used.

Main functions and functions

• Embed dynamic text in HTML pages

• Read and write HTML elements

• Respond to browser events

• Validate data before it is submitted to the server

• Detect visitor's browser information

• Control cookies, including creation and modification.

• Server-side programming based on node.js technology.

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