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uniapp has no span

May 22, 2023 am 09:32 AM

In recent years, with the rapid development of mobile Internet, various frameworks and tools have emerged in endlessly. Among them, the UniApp framework is a cross-platform development framework that has attracted much attention. It is based on Vue.js and can develop applications for multiple platforms at the same time, including iOS, Android, H5, etc. However, during the development process using UniApp, some developers may find a small problem: UniApp does not have span?

In traditional Web development, we often use span tags. span is a block element similar to div, but it does not wrap automatically and can be nested inside other tags to separate and position it. It is widely used in page layout, style design, character control, etc.

However, during the development of UniApp, we found that span was not supported. This makes some developers find it very inconvenient, because in some scenarios, such as text style control, the span tag can play a very critical role.

So, why doesn’t UniApp span? Does this mean we need to give up using this label? In fact, the reason why UniApp does not have span is not because it "resists" this tag, but because UniApp needs to restrict the use of some native tags in order to ensure multi-terminal compatibility and stability as much as possible.

Considering the particularity of UniApp development, it needs to maintain consistent display effects and interaction logic across multiple platforms. Therefore, all tags and attributes in HTML are not supported in UniApp, because these tags and attributes may be implemented differently on different platforms, which will cause compatibility issues. In other words, UniApp has made some tag and attribute restrictions in order to avoid cross-platform compatibility issues.

Although span tags are not supported in UniApp, we can use alternatives to solve this problem. One common approach is to use text tags. The text tag is used to present text content. It does not support nested tags, but you can use the style attribute to control the style of the text. Therefore, we can use the style attribute in the text tag to implement functions similar to the span tag:

<text style="font-size: 14px; color: #333;">这里是一段文字</text>

In addition, UniApp also supports rich-text tags. Rich-text tags can nest span tags to achieve complex text style control. However, it should be noted that the performance of rich-text tags may be worse than text tags, so it is not recommended to be used in large areas.

To sum up, UniApp does not conflict with the span tag, but makes some restrictions to ensure multi-terminal compatibility and stability. In UniApp development, we can use text tags, rich-text tags and other alternatives to solve this problem. Therefore, when developers use UniApp to develop, they should think about issues from the perspective of multi-platform consistency and stability, and make reasonable use of the tags and attributes provided by UniApp.

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