为了支持更多的LaTeX功能，我更换了Hexo自带的Mathjax组件，使用latex.js。
latex.js
原理和源代码可查看这个GitHub repo：upmath.me
作者：Roman Parpalak
使用效果
The editor converts LaTeX equations in double-dollars:
In this case the LaTeX syntax will be highlighted in the source code. You can even add equation numbers (unfortunately there is no automatic numbering and refs support):
$$ |\vec{A}|=\sqrt{A_x^2 + A_y^2 + A_z^2}. $$It is possible to write Cyrillic symbols in \text command: $$ Q_\text{плавления}>0 $$ .
One can use matrices:
$$ T^{\mu\nu}=\begin{pmatrix} \varepsilon&0&0&0\\ 0&\varepsilon/3&0&0\\ 0&0&\varepsilon/3&0\\ 0&0&0&\varepsilon/3 \end{pmatrix}, $$integrals:
$$ P_\omega={n_\omega\over 2}\hbar\omega\,{1+R\over 1-v^2}\int\limits_{-1}^{1}dx\,(x-v)|x-v|, $$cool tikz-pictures:
$$
\usetikzlibrary{decorations.pathmorphing}
\begin{tikzpicture}[line width=0.2mm,scale=1.0545]\small
\tikzset{>=stealth}
\tikzset{snake it/.style={->,semithick,
decoration={snake,amplitude=.3mm,segment length=2.5mm,post length=0.9mm},decorate}}
\def\h{3}
\def\d{0.2}
\def\ww{1.4}
\def\w{1+\ww}
\def\p{1.5}
\def\r{0.7}
\coordinate[label=below:$A_1$] (A1) at (\ww,\p);
\coordinate[label=above:$B_1$] (B1) at (\ww,\p+\h);
\coordinate[label=below:$A_2$] (A2) at (\w,\p);
\coordinate[label=above:$B_2$] (B2) at (\w,\p+\h);
\coordinate[label=left:$C$] (C1) at (0,0);
\coordinate[label=left:$D$] (D) at (0,\h);
\draw[fill=blue!14](A2)--(B2)-- ++(\d,0)-- ++(0,-\h)--cycle;
\draw[gray,thin](C1)-- +(\w+\d,0);
\draw[dashed,gray,fill=blue!5](A1)-- (B1)-- ++(\d,0)-- ++(0,-\h)-- cycle;
\draw[dashed,line width=0.14mm](A1)--(C1)--(D)--(B1);
\draw[snake it](C1)--(A2) node[pos=0.6,below] {$c\Delta t$};
\draw[->,semithick](\ww,\p+0.44*\h)-- +(\w-\ww,0) node[pos=0.6,above] {$v\Delta t$};
\draw[snake it](D)--(B2);
\draw[thin](\r,0) arc (0:atan2(\p,\w):\r) node[midway,right,yshift=0.06cm] {$\theta$};
\draw[opacity=0](-0.40,-0.14)-- ++(0,5.06);
\end{tikzpicture}$$
plots:
$$ \begin{tikzpicture}[scale=1.0544]\small \begin{axis}[axis line style=gray, samples=120, width=9.0cm,height=6.4cm, xmin=-1.5, xmax=1.5, ymin=0, ymax=1.8, restrict y to domain=-0.2:2, ytick={1}, xtick={-1,1}, axis equal, axis x line=center, axis y line=center, xlabel=$x$,ylabel=$y$] \addplot[red,domain=-2:1,semithick]{exp(x)}; \addplot[black]{x+1}; \addplot[] coordinates {(1,1.5)} node{$y=x+1$}; \addplot[red] coordinates {(-1,0.6)} node{$y=e^x$}; \path (axis cs:0,0) node [anchor=north west,yshift=-0.07cm] {0}; \end{axis} \end{tikzpicture}$$