how to import libraries from cdn in reactjs?

Question

I have tried:

import \'maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css\';

but it produces error. How can i import a cdn in my

Answer 1

I think we can write some function like this

const fetchJsFromCDN = (src, externals = []) => {
  new Promise((resolve, reject) => {
    const script = document.createElement('script')
    script.setAttribute('src', src)
    script.addEventListener('load', () => {
      resolve(externals.map(key => {
        const ext = window[key]
        typeof ext === 'undefined' && console.warn(`No external named '${key}' in window`)
        return ext
      }))
    })
    script.addEventListener('error', reject)
    document.body.appendChild(script)
  })
}

fetchJsFromCDN('//cdn.jsdelivr.net/npm/eruda', ['eruda']).then(([eruda]) => eruda.init())

without function like require, CDN source may inject object to window so we can get it by given name

CSS files could be easier to import with this way