Ŝalenzo

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实验性的数学公式支持 / 在网页上渲染数学公式的另类解决方案

为了免去MathJax丑陋又缓慢的“正在渲染数学”提示，切实提升页面加载速度，同时调整公式的字体以免MathJax默认的TeX字体与页面的其余部分格格不入，仅使用MathJax将LaTeX公式转换到MathML。虽然MathML标准已经有好些年头了，但是浏览器支持仍旧一塌糊涂，不少屑东西明确表示拒绝支持。我想，借助现今更为先进的CSS排版功能，能否不用JavaScript测量文本尺寸就渲染出漂亮——至少是不难看——的数学公式呢？

$\displaystyle \left\{\frac{1}{2}\binom{n}{k},2\times(-1)\right\}$

这可是纯CSS实现的可伸缩大括号哦！这些字符是各种正文字体通用的，因为用CSS也画不出更具特色的符号了。

MathJax的文档写得真是烂爆了……

支持下列标签：

[ ] <math>
[ ] <merror>
[ ] <mfrac>
[ ] <mi>
[ ] <mmultiscripts>
[ ] <mn>
[ ] <mo>
[ ] <mover>
[ ] <mpadded>
[ ] <mphantom>
[ ] <mprescripts>
[ ] <mroot>
[ ] <mrow>
[ ] <ms>
[ ] <mspace>
[ ] <msqrt>
[ ] <mstyle>
[ ] <msub>
[ ] <msubsup>
[ ] <msup>
[ ] <mtable>
[ ] <mtd>
[ ] <mtext>
[ ] <mtr>
[ ] <munder>
[ ] <munderover>
[ ] <none>

绝对不会支持下列玩意：

dir="rtl"
<annotation>
<annotation-xml>
<maction>
<semantics>

$1+1=2\iiiint\dfrac{1}{4}\in\mathbb{R},\Re$ is true. $\undef=1 \dd x$ .

This mathematical formula with a big summation and the number pi [ \sum_{n=1}^{+\infty}\frac{1}{n^2}=\frac{\pi^2}{6} ] is easy to prove.

This mathematical formula with a big summation and the number pi ( \sum_{n=1}^{+\infty}\frac{1}{n^2}=\frac{\pi^2}{6} ) is easy to prove.

$A\mathrm{A}\mathfrak{A}\mathbb{A}$
$\sum_A{\displaystyle\sum\nolimits_A}\sum_{\textstyle A}$
Fill the blank: $\sqrt{2\fbox{}-1}=3$
[\begin{vmatrix} x & \binom{5}{3} \ \sqrt{7+2} & y \ \end{vmatrix}]
$y=x^2\text{ if }x\ge1\text{ and }2\text{ otherwise.}$
$\cos, c, \mathrm{c}$
$1+2\mathord{+}3\qquad+4+\hspace{3em}5$
$\sum_5{\textstyle\sum}_6}{\sum_5\sum\limits_7$
$\left.\frac{\rule[-50px]{10px}{100px}}{\rule[-25px]{10px}{25px}}\right\uparrow\uparrow$ (no asymmetric delimiters in TeX)
$1\quad\frac{2\vrule width 0pt height 0pt depth 1em}{3\vrule width 0pt height 2em depth 0pt}$
$s=\mathtt{"hello\ world"}$
$\left(\frac{1+\frac{2}{3}}{4}\right)^5$
$0+\dfrac{1}{2}-\frac{1}{2}+\frac{1}{234}-\binom{123}{4}$
$\sqrt[3]{\sqrt{\frac{1}{2}+4}}+0$
$*_A\scriptstyle\mathop*\limits_B\mathop*\limits_C*_D$
$\frac{\frac{1}}{3}$
$1\colorbox{lightblue}{\frac{23456}{78}}9+1\colorbox{lightblue}{\frac{23456}{78}}9$
$\frac{x+y+z}{x\phantom{ {}+y}+z}$
$\underset{2}{1}+\overset{4}{3}+\overset{7}{\underset{6}{5}}+\underset{9}{\widehat{8}}+\overset{13}{\underbrace{11}}$
${}_6\prescript{999}{8}{1}_2^3{}^5$
[\frac{A}{2}=\begin{pmatrix} 1 & 2 & 3 \ 4 & 5 & 6 \ 7 & 8 & 9 \ \end{pmatrix}]
[\left{\frac{1}{2}\right}]
[\begin{bmatrix} 12 & 34 & 56 \ 7 & 8 & 9 \ \end{bmatrix}^{\alpha}]
$\exp\mathbf{A}\in\mathfrak{gl}_n(\mathbb{R})$
$\sqrt{\sum_{n=1}^{+\infty}\frac{10}{n^4}=\frac{\pi^2}{3}}$ VS $\displaystyle\sum_{n=1}^{+\infty}\frac{10}{n^4}=\frac{\pi^2}{3}$
$\sqrt{x^2}\neq x^2$
$A^{A^A}+\sqrt[A]{A}+\dfrac{A+\frac{A}{A}}{A}$

\mathbf{Ab}^\mathsf{T}

⋇