Vue development: Optimizing the stuck problem of gesture scaling on the mobile terminal

How to solve the stuck problem of mobile gesture zoom page in Vue development

In recent years, the popularity of mobile applications has made gesture operations an important way of user interaction. In Vue development, implementing the gesture zoom function on the mobile terminal often encounters the problem of page lag. This article will explore how to solve this problem and provide some optimization strategies.

1. Understand the principle of gesture scaling

Before solving the problem, we first need to understand the principle of gesture scaling. Gesture zooming is implemented by listening to touch events. When the user slides the screen with two fingers, the page will zoom according to the sliding of the fingers. In Vue development, you can use third-party libraries such as "hammer.js" to implement the gesture zoom function.

2. Reduce redrawing and reflowing

Page stuck problems are often caused by frequent redrawing and reflowing operations. In order to reduce these operations, we can adopt the following strategies:

• Use CSS animation: Use CSS animation to achieve the zoom effect of the page instead of manipulating DOM elements through JavaScript. CSS animations can take advantage of the browser's hardware acceleration and have higher performance.
• Avoid frequent DOM operations: Minimize operations on DOM elements, especially during gesture zooming. You can avoid frequent querying of DOM elements by caching them.
• Use virtual DOM technology: The virtual DOM technology used by Vue can minimize DOM operations and improve performance. During the gesture scaling process, you can use Vue's watch attribute to monitor changes in DOM elements instead of directly manipulating the DOM.

3. Using throttling functions

Throttling functions are a common optimization strategy that can control the execution frequency of callback functions. During gesture zooming, the user's finger may slide the screen quickly, causing the callback function to be triggered frequently. In order to reduce the number of executions of the callback function, we can use the throttling function to limit the execution frequency of the callback function. In Vue development, you can use the throttle function in the Lodash library to achieve throttling.

4. Using requestAnimationFrame

requestAnimationFrame is a method provided by the browser to optimize animation performance. During the gesture zooming process, you can use requestAnimationFrame to control the refresh frequency of the animation to avoid page freezes. In Vue development, requestAnimationFrame can be used in the animation's update function to update the DOM.

5. Use hardware acceleration

Mobile devices usually have hardware acceleration capabilities that can improve the rendering performance of the page. When using CSS animation or JavaScript animation, you can set the CSS property "-webkit-transform: translate3d(0, 0, 0);" to enable hardware acceleration.

Summary:

In Vue development, page freeze is a common problem when implementing the mobile gesture zoom function. By optimizing redraw and reflow operations, using throttling functions, using requestAnimationFrame and hardware acceleration, the rendering performance of the page can be improved and the page lag problem can be solved. At the same time, the rational use of third-party libraries such as hammer.js and Lodash can also simplify the development process and improve development efficiency. Hope this article helps you!

The above is the detailed content of Vue development: Optimizing the stuck problem of gesture scaling on the mobile terminal. For more information, please follow other related articles on the PHP Chinese website!