Which unit is used for uniapp development?

When developing with uniapp, we need to choose a unit as the layout benchmark. Common units include px, rpx, vw/vh, etc. So in actual development, which unit should we choose to use?

First of all, we need to understand the meaning and characteristics of various units. px is the most common unit, representing pixel value, but the size displayed on different devices will be different, which is not suitable for responsive layout. rpx is a unit unique to WeChat mini programs. It is calculated relative to the screen width and can be adapted to different devices. However, in uniapp, the adaptation effect of rpx may not be ideal because the development environment and applet of uniapp are different. vw/vh is a unit relative to the width and height of the viewport, which can implement responsive layout, but is not supported in some lower version browsers.

Taken together, I recommend using rpx as the layout benchmark in uniapp development. Although there may be some adaptation problems in uniapp, they can be solved well with some tips and tools. For example, you can use the postcss-px-to-viewport plug-in to convert px to vw units to achieve better responsive layout effects.

In addition to unit selection, there are some things to pay attention to. For example, when using rpx, you should follow the design specifications of WeChat applet. It is recommended that the text size should not exceed 28px to avoid problems such as blurring. In addition, during the page design process, priority should be given to the mobile display effect to avoid problems such as layout confusion on the desktop.

In short, choosing a suitable layout unit is an important step in uniapp development, which can help us achieve good responsive layout effects. Although different units have their own advantages and disadvantages, taking everything into consideration, I think rpx is the best choice. Hope this article is helpful to everyone.

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