What functions can javascript achieve?

JavaScript (JS for short) is a widely used scripting language that is often used for front-end interaction and dynamic effects on web pages. It can achieve many functions, including but not limited to the following:

1. Web page interaction

The most common use of JavaScript is to achieve various interactive effects in web pages, such as Swipes, clicks, pop-ups, etc. Using JS you can easily change elements on a web page in response to user actions.

2. Form Validation

When users fill in data in the form, JS can verify the data to ensure that the input format is correct. For example, JS can ask the user to enter an email address format. Adding validation prevents users from accidentally entering incorrect data.

3. AJAX request

AJAX technology allows the web page to update part of the content without refreshing. This technology usually requires JavaScript support. Through AJAX, web pages can respond to user operations faster and display data more accurately.

4. Animation

JS can also realize animation effects on web pages, such as dynamic images, scrolling effects, etc. You can use JS to change the position, size, color and other attributes of elements. These special effects can make web pages more lively and interesting.

5. Cookie operation

Using JS, web pages can call cookies to record user data, such as username and password. This way, the user does not have to enter this data again the next time they visit the web page.

6. Browser Control

JS can control the behavior of the browser, such as allowing new windows to open, disabling right-click menus, etc. This allows websites to have greater control over user behavior while providing a better user experience.

7. Interactive Games

JS can make the elements of the web page move in a dynamic way to achieve interactive game effects. Using JS, you can control elements in the game interface and count players' scores and achievements.

In short, JavaScript is a powerful scripting language that can be used to achieve various web page effects and functions. It is indispensable when the website requires more interactivity and dynamic display. Therefore, JavaScript has become one of the indispensable tools in website development.

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