font-size :small 的默认 px, pt 是多少？

Question

font-size:small 的默认 px、pt 是多少？

.navigation li a{
font-weight:400;
font-family: "Segoe UI",Segoe,Tahoma,Arial,Verdana,sans-serif;
text-decoration:none;
**font-size:small;**
}

Answer 1

Jquery 回答 - px-13px pt-9.75

alert('px :-' +$('p').css('font-size'))
alert('pt :-' +parseInt($('p').css('font-size'))*3/4)

p{
    font-size:small;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<p>Text</p>

Answer 2

这取决于用户代理。

摘自本书：Pro Css techniques

The keywords provide relative font sizes to one another based on a scaling factor of the user agent. This scaling factor is somewhat of a moving target, as different user agents may provide different scaling factors. Even the CSS specification changed its recommendation between versions 1 and 2. (CSS 1 specified a scaling factor of 1.5 going up and .66 going down, but changed to a more vague “between 1.0 and 1.2” in the CSS 2 specification.)

Because of this, the exact pixel sizes of rendered type vary from browser to browser when size is specified using absolute-size keywords. If we assume a default (medium) em square size of 16 pixels (like most desktop browsers give us out of the box), we end up with the following translations to pixel sizes for scaling factors of 1.5 and 1.2:

font-size :small 的默认 px, pt 是多少？

What is the default px, pt for font-size :small?

html

css

fonts

font-size