从 JSON 文件中的 src 动态创建导入语句，用于 webpack 构建

Question

I have an example JSON file like the following:

menu.json

{
  "0":{
      "img":"./101 cup noodles.png"
  },
  "1":{
      "img":"./102 cup noodles with beef.png"
  },
  "2":{
      "img":"./103 cup noodles with egg.png"
  },
  "3":{
      "img":"./104 cup noodles with shrimp.png"
  }
}

Is there any way to dynamically create import statements for each of the image links inside the JSON file for webpack to build?

I would like to avoid having to write an individual import for each image at the top of my javascript file especially if there are hundreds of items. Eg:

menu.js

import img0 from './101 cup noodles.png'
import img1 from './102 cup noodles with beef.png'
import img2 from './103 cup noodles with egg.png'
import img3 from './104 cup noodles with shrimp.png'

I have tried dynamically making the import statements with named fields and a for loop but learned that import statements need to be top level so unfortunately the following did not work:

menu.js

import data from './menu.json'

for (let i = 0; i < Object.keys(data).length; i++) {
    import ['img' + Object.keys(data)[i]] from data[i]['img'];
}

At the moment I am using the loop above to console log all of my import statements and just copy+pasting them into the top of my code but that seems extremely inelegant and I am wondering if there is a better way.

Answer 1

In this post you have a collection of strategies that may help you. I would consider, to put all images in the same folder and write the path once for all.

Answer 2

You can get the properties of the object with Object.keys , then map through the array and construct the string.

 const obj = { "0":{ "img":"./101 cup noodles.png" }, "1":{ "img":"./102 cup noodles with beef.png" }, "2":{ "img":"./103 cup noodles with egg.png" }, "3":{ "img":"./104 cup noodles with shrimp.png" } } const res = Object.keys(obj).map(e => `import ${Object.keys(obj[e])[0] + e} from '${obj[e].img}'`).join('\n') console.log(res)