What native JavaScript can do

JavaScript is a programming language that runs on web pages. It can bring rich dynamic effects and interactivity to websites. Today, we will discuss what JavaScript can do natively.

1. Operation HTML and CSS

JavaScript can operate HTML and CSS through the DOM (Document Object Model). You can change the element's style, content, attributes, etc. Through JavaScript, we can make certain elements change during user interaction, such as changing color, size, position, transparency, etc., adding or removing elements, and modifying the class of elements.

2. Processing form data

JavaScript can also help us process form data. We can use form events in JavaScript to verify the validity of user input and ensure that the user's input meets specific requirements. At the same time, JavaScript can also override native HTML form validation. Additionally, you can use JavaScript's Ajax technology to submit and process form data asynchronously without having to reload the page.

3. Creating and handling cookies

Through JavaScript, we can also use cookies to store user data. A cookie is a small text file that is stored on the user's computer. They are widely used to remember a user's preferences, such as their username, password, language settings, and more. JavaScript can easily read and create cookies and send them to the server.

4. Create animation effects

On top of HTML and CSS, JavaScript can create richer animation effects. You can use functions such as setTimeout(), setInterval() and requestAnimationFrame() in JavaScript to control the speed and time of animation, while using ## of CSS3 #transform, transition and other attributes to create various types of animation effects.

Making AJAX Requests

JavaScript can also communicate with the web server through AJAX technology without refreshing the entire page. AJAX allows the browser to send HTTP requests to get or send data and then use JavaScript to process the response. This means we can change parts of the page without reloading the entire page.

Operation Browser

JavaScript’s control over the browser is not limited to fine control of web page content. JavaScript can also resize the browser, reposition it, and even open new windows or browser tabs. In addition, JavaScript can also detect user mouse events, such as clicks, slides, hovers, etc., to respond to user actions.

Implementing data storage

JavaScript can also use the HTML5 Web Storage API to implement local storage. Local storage allows websites to store data in the browser for later use. This means that we can store some data in localStorage or sessionStorage without sending it to the web server.

In short, through JavaScript, we can create richer, interactive and engaging websites. With these things JavaScript can do natively, you can modernize your website, attract more users, and achieve better engagement with your users (and potential customers).

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