JavaScript Fetch API-将文本另存为对象? [英] JavaScript Fetch API - save text as object?

问题描述

我目前正在使用JavaScript中的访存API.我有一个要从sample.txt中读取的文本文件.我想从文本文件中抓取不同的行并将其保存在数组中，以便可以使用它.我一直在寻找如何将其另存为对象，但我想我一直在将代码用于JSON而不是文本.请提出任何建议吗?

I am currently working with the fetch API in JavaScript. I have a text file I'd like to read from called sample.txt. I would like to grab the different lines out of the text file and save it in an array so I can work with it. I've been searching for how to save it as an object, but I think I've been using the code for JSON and not for text. Please give any suggestions?

sample.txt

sample.txt

apple
banana
orange
grape

index.js

let fruitArray; //initialized new array

fetch('sample.txt') // fetch text file
.then((resp) => resp.text())
.then(data.split(/\r?\n/) = fruitArray)) //tried to assign each separate line as an element of fruitArray

预期产量

fruitArray = ['apple', 'banana', 'orange', 'grape'];

推荐答案

let fruitArray;不会创建新的数组-为此，您实际上必须声明一个类似于[]的数组.但是最好只在响应返回后才声明该数组，然后在需要时将其传递.

let fruitArray; doesn't create a new array - you have to actually declare an array like [] for that. But it would be better to declare the array only once the response comes back, and then pass it around if needed.

.then接受 function 作为参数，而不是普通代码块. .then回调的第一个参数是前一个诺言的解析结果-这是完整的字符串.

.then accepts a function as a parameter, not a plain code block. The first parameter of the .then callback is the result of the resolution of the previous promise - which here is the full string.

分配(=)时，左侧必须是变量(或属性).

When assigning (=), the left hand side needs to be a variable (or a property).

fetch('sample.txt') // fetch text file
  .then((resp) => resp.text())
  .then(data => {
    const fruitsArray = data.split(/\r?\n/);
  }) 

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