Description

Custom HTML Element

Custom HTML Element¹ is introduced in HTML5, which allows user to create their own custom html element like

<my-custom-tag> </my-custom-tag>

Use Case

it will be useful with the Typst html output feature (especially with html.elem), one can use it as a placeholder and do more post-processing in further process. for example, the

#html.elem("my-custom-tag")

will produce <my-custom-tag> mentioned above. and one can use 3-rd party tools to replace it with html contents.²

However, currently, it is blocked by the naming check, the character "-" is not valid in a tag name error will be reported if you try to do this.