4G slowed down in the middle of the nightThe slow 4G network speed in the middle of the night could be due to a variety of factors. On the one hand, even in the middle of the night, there may still be more users using the 4G network in some areas. When the traffic pressure on the 4G network is high, the network speed will slow down. On the other hand, the signal problem of the base station in the area might also affect the network speed. In addition, if you were using the " Speed Limit " package and the traffic limit was used, the network speed would also slow down. It is recommended to avoid high-load operations such as large downloads and online videos when the network speed is slow. You can try to contact mobile customer service for further investigation and resolution.
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Instead, the transition animation slowed downIf the transition animation is slow, it may be related to the following factors in the front end development:
** 1. About the transition of the CSSs **
1. ** Unoptimized transition attribute settings **
- If the transition attribute is set for transition effects (such as displacement, rotation, etc.), but the transition time, delay time, or transition function (such as ease, linear, etc.) are not set properly, the animation may be slowed down. For example, if the transition time was set too long, the animation would look slow. For example, if you set the transition time of an element to 5 seconds, the animation speed would be significantly slower than if you set it to 0.5 seconds.
- When setting up a transition for multiple attributes at the same time, if the transition parameters of each attribute were not adjusted specifically, the overall animation effect might not be good. For example, if you set up a transition for the width, height, and clarity of the elements at the same time, and the width and height changes are large, and the transition time is long, it may make the animation seem slow.
2. ** Element layout and performance impact **
- If the layout of an element changes complicatedly during the transition, such as an element changing from absolute positioning to relative positioning, or the size of the parent element changes during the transition, this may affect the performance of the transition and cause the animation to slow down. This was because a change in the layout might cause the browser to rearrange, and rearranging would consume more performance.
- When the elements that are being transitioned contain a large number of sub-elements or are deeply embedded, the browser needs to deal with more element relationships when calculating the transition effect, which may also cause the animation speed to decrease.
** 2. Javelin animation (if involved)**
1. ** Problem with the timer **
- If you use setTimeOut or setDuration to control the animation frame update, because they are not specifically designed for animation, they may not be able to accurately update the animation frame according to the browser's refresh rate, resulting in the animation not smooth and looking slow. For example, in a complex javelin animation, using setTimeOut to update the position of the elements, and the time interval set is not reasonable (such as the time interval is too long), will cause the animation to be stuck and slow down.
2. ** Complicated logical calculations **
- In a javelin animation, if every frame of the animation required a lot of logical calculations, such as complex mathematical operations or frequent query of the attributes of the DOM elements, it would take up a lot of computing resources, causing the animation frame update speed to slow down, making the entire animation look slow.
** 3. Device-related aspects (if it is on a specific device)**
1. ** Device Performance **
- If the device's processor performance was low and there was insufficient memory, it might be difficult to process the animation effect, causing the transition animation to slow down. For example, when running complex animation effects on some older mobile devices or low-end computers, the animation would show obvious delays and slowness because the hardware of the device could not quickly process the changes in the image.
2. ** System settings **
- On some devices, the system settings might affect the speed of the animation. For example, if you turned on the "reduce dynamic effects" on an iOS device, the animation would use the fade-out effect instead of some more complicated zooming or slideshows. This would change the way the animation was presented, and it might look slower or simpler. On Android devices, similar system-level animation settings (such as animation zooming ratio, etc.) would also affect the speed of transition animation.
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