问题
Is it better to use html template (and then html import) to create web components or to use template string? What are pros and cons of these methods?
回答1:
Using html template files is better for reuse: the same file can be used in different web components. Also they are better displayed in most IDEs as they are recognized as full HTML code.
Using template strings is faster (inline). They don't rely on HTML Imports which is not adopted by every browser vendors. Also you can use template literals to insert directly value of JavaScript variables in the DOM.
Actually there's no much diffrences because there's a workaround for every differences list above (i.e. you can reuse template strings if you save them as text file, or you can load html templates withour HTML imports).
来源：https://stackoverflow.com/questions/41637056/template-html-and-template-string-in-web-components