formatting - Why does HTML require that multiple spaces show up as a single space in the browser?

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formatting - Why does HTML require that multiple spaces show up as a single space in the browser?

posted Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

formatting - Why does HTML require that multiple spaces show up as a single space in the browser?

I have long recognized that any set of whitespace in an HTML file will only be displayed as a single space. For instance, this:

<p>Hello.        Hello. Hello. Hello.                       Hello.</p>

displays as:

Hello. Hello. Hello. Hello. Hello.

This is perfectly fine, as if you need multiple spaces of pre-formatted text you can just use the <pre> tag. But what is the reason? More precisely, why is this in the specification for HTML?

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深蓝 · Answer 1 · 2021-10-16T22:10:23+0000

Spaces are compacted in HTML because there's a distinction between how HTML is formatted and how it should be rendered. Consider a page like this:

<html>
    <body>
        <a href="mylink">A link</a>
    </body>
</html>

If the HTML was indented using spaces for example, the link would be preceded by several spaces.

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formatting - Why does HTML require that multiple spaces show up as a single space in the browser?

formatting - Why does HTML require that multiple spaces show up as a single space in the browser?

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