Why do today’s websites use responsive layout?

Why do current websites use responsive layout?

With the popularity of mobile devices and the rapid development of the Internet, the way people access websites has also changed. In the past, people mainly accessed websites through desktop computers, but now more and more people use mobile devices such as mobile phones and tablets to browse the web. The screen sizes and resolutions of these mobile devices vary, which brings new challenges to website design.

The traditional website design method is a fixed layout, which fixes the width of the web page to a specific size to adapt to the desktop computer screen. This kind of design will cause two problems when browsing on mobile devices: first, the page content is too large and needs to be reduced or scrolled horizontally to display it completely; second, the page layout is confusing, with text, pictures and other elements stacked together or displayed in misplaced positions. This unfriendly user experience will lead to the loss of visitors and reduce the conversion rate of the website.

The emergence of responsive layout effectively solves these problems. Responsive layout refers to dynamically adjusting the layout and size of elements of a web page according to the screen size and resolution of the user's device so that it can be displayed in the best way on different devices.

Below we use specific code examples to explain why current websites should adopt responsive layout.

First, we use the meta tag at the head of the HTML document to set the size of the viewport to ensure the adaptive layout of the web page. The code is as follows:

<meta name="viewport" content="width=device-width,initial-scale=1.0">

Next, we can use CSS3 media query to apply different styles according to the screen width of different devices. For example, when the screen width is less than or equal to 480px, we set the width of the image to 100% to fit the screen size. The code is as follows:

@media (max-width: 480px) {
    img {
        width: 100%;
    }
}

In addition, we can also use CSS flexible layout (flexbox) to achieve flexible web page layout. For example, we can use flexbox to automatically adjust the navigation bar menu items to one or more lines to adapt to different screen widths. The code is as follows:

.navbar {
    display: flex;
    flex-wrap: wrap;
}

Finally, we can also use JavaScript to enhance the interactive effects and animation effects of the web page. For example, on mobile devices, we can use gesture recognition libraries to support gesture operations such as sliding and zooming. The code is as follows:

var myElement = document.getElementById('myElement');
var mc = new Hammer(myElement);

mc.on("swipeleft", function() {
    // 向左滑动的操作
});

mc.on("pinchin", function() {
    // 缩小的操作
});

Through the above code examples, we can see the advantages and application methods of responsive layout. It enables web pages to present a good user experience on different devices and improves the accessibility and usability of the website. Therefore, today’s websites generally adopt responsive layout to adapt to the needs of different devices to meet the diverse access methods of users.

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