Uncaught ReferenceError: require is not defined

Question

每次链接

var marked = require('marked');
marked.setOptions({
    renderer: new marked.Renderer(),
    gfm: true,
    tables: true,
    breaks: true,
    pedantic: true,
    sanitize: true,
    smartLists: true,
    smartypants: true
});

都是这个问题Uncaught ReferenceError: require is not defined 到底怎么办啊。网上搜的很少。

Answer 1

欠定义了。建议逐一检查

Answer 2

不好意思 我看了一脸懵比  

Answer 3

应该是要引入require.js吧