在前端开发中，我们经常会遇到需要在网页中展示数学公式的需求。而 mathjax 是一个相对流行的解决方案。不过，使用 mathjax 需要在网页中引入复杂的 JavaScript 脚本，这对网站性能有一定的影响。
为了方便在网页中展示数学公式，并提高网站性能，可以使用 gulp-mathjax-page 这个 npm 包。本文将详细介绍如何使用这个包。
安装 gulp-mathjax-page
要使用 gulp-mathjax-page，首先需要在项目中安装它。可以使用 npm 进行安装。
npm install gulp-mathjax-page -D
使用 gulp-mathjax-page
安装完成后，就可以在 gulpfile.js 中使用 gulp-mathjax-page 了。
首先，引入 gulp 和 gulp-mathjax-page。
const gulp = require('gulp');
const mjpage = require('gulp-mathjax-page');接下来，在 gulpfile.js 中添加任务。
gulp.task('mathjax', function() {
return gulp.src('src/**/*.html')
.pipe(mjpage())
.pipe(gulp.dest('dist'));
});这里创建了一个名为 mathjax 的任务，把 src 目录下的所有 html 文件都传入给 mjpage，处理后再输出到 dist 目录。
运行命令：
gulp mathjax
就可以在输出目录中看到添加了数学公式的 html 文件了。
深入理解 gulp-mathjax-page
gulp-mathjax-page 能将使用 mathjax 语法的数学公式转换为 SVG 格式，这样可以在不引入 mathjax 脚本的情况下展示数学公式。
在处理 html 文件时，gulp-mathjax-page 会寻找用 mathjax 语法写的公式，并用 mathjax 进行渲染，最终将渲染好的 SVG 图片嵌入到 html 文件中。
默认情况下，gulp-mathjax-page 会将所有公式都渲染为 SVG 图片。可以通过配置项进行限制，例如只对符合某些数学语法规则的公式进行渲染。
示例代码
为了方便学习和使用 gulp-mathjax-page，这里提供一个示例代码。以下是一个使用 mathjax 语法写的 html 文件。
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-------在这个 html 文件中，有两个数值公式和一个矩阵公式。使用 gulp-mathjax-page 处理这个 html 文件，会将这三个公式转换为 SVG 图片，并插入到 html 文件中。最终的 html 文件如下所示。
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