在网页中写入数学公式_html/css_WEB-ITnose
今天跟大家分享在网页中使用数学公式。
像这样的公式大家怎么写出来呢？
甚至还有更复杂的：
以前有一种很常见的做法，就是利用数学公式生成器生成一张图片，然后将图片嵌在网页里。
就是先用这个数学公式生成器生成公式的图片，然后在将该img的style属性改成 style="padding:0px;border: none;margin:0px;vertical-align: bottom;" 插入到网页中就可以了。
这种方法可以利用阮一峰的数学公式生成器。具体做法去他的博客看，我就不搬运了：阮一峰数学生成器博客（点击我）。
但是，有时候我们不想在网页中嵌入图片，就是不用图片这种方法怎么去实现呢？答案是利用Mahtjax这个插件。首先上官网：Mathjax官网，然后是github的资料：GitHub，最后还有一个英文文档：文档
这些都是我查找的资料，我说一下简单的使用方法。
第一步先是引入：你可以通过引入CDN，也可以下载js引入，个人推荐CDN引入。
<script type="text/javascript" src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script><br /><br />上述的configure支持了TeX和MathLL语法，如果需要支持AsciiMath语法，将configure改为“?config=TeX-AMS=MML_HTMLorMML”<br /><br />第二步：有3种使用方法：<br />①：TeX and LaTeX格式方式<br />默认运算符是$$...$$和\[... \]为显示数学，\（...\）用于在线数学。请特别注意，在$...$在线分隔符不使用默认值。这是因为，美元符号出现常常在非数学设置，这可能会导致一些文本被视为意外数学。例如，对于单元分隔符，“...的费用是为第一个$2.50和$2.00每增加一...”将导致短语“2.50的第一个，和”被视为数学因为它属于美元符号之间。注意HTML的标签与TeX语法可能有冲突，“小于号/大于号/ampersands&”需要前后空格，比如：$$a < b$$；<br />为了防止出错，加上一段js代码，例子如下：
<!DOCTYPE html><html><head><title>MathJax TeX Test Page</title><script type="text/x-mathjax-config"> MathJax.Hub.Config({tex2jax: {inlineMath: [['$','$'], ['\\(','\\)']]}});</script><script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script></head><body>When $a \ne 0$, there are two solutions to \(ax^2 + bx + c = 0\) and they are$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$</body></html>②：第二种方法：添加MathML中等标签的形式
<!DOCTYPE html><html><head><title>MathJax MathML Test Page</title><script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script></head><body><p>When<math xmlns="http://www.w3.org/1998/Math/MathML"> <mi>a</mi><mo>≠</mo><mn>0</mn></math>,there are two solutions to<math xmlns="http://www.w3.org/1998/Math/MathML"> <mi>a</mi><msup><mi>x</mi><mn>2</mn></msup> <mo>+</mo> <mi>b</mi><mi>x</mi> <mo>+</mo> <mi>c</mi> <mo>=</mo> <mn>0</mn></math>and they are<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> <mi>x</mi> <mo>=</mo> <mrow> <mfrac> <mrow> <mo>−</mo> <mi>b</mi> <mo>±</mo> <msqrt> <msup><mi>b</mi><mn>2</mn></msup> <mo>−</mo> <mn>4</mn><mi>a</mi><mi>c</mi> </msqrt> </mrow> <mrow> <mn>2</mn><mi>a</mi> </mrow> </mfrac> </mrow> <mtext>.</mtext></math></p></body></html>
③第三种：AsciiMath输入。以``为符号。
<!DOCTYPE html><html><head><title>MathJax AsciiMath Test Page</title><script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=AM_HTMLorMML-full"></script></head><body><p>When `a != 0`, there are two solutions to `ax^2 + bx + c = 0` andthey are</p><p style="text-align:center"> `x = (-b +- sqrt(b^2-4ac))/(2a) .`</p></body></html>
运行结果都是这样子的
DONE
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