如何修改数组并转换为JSON？ES6实现结果异常排查

Hey there, let's sort out this JSON formatting problem you're facing. First, let's break down what's wrong with your current result:

{"Quotes:true","Flight Logs:true","Currency Records:true","FTD:true","Maintenance Tracker:true"}

This isn't valid JSON because:

• Object keys must be wrapped in double quotes (e.g., "Quotes" instead of Quotes)
• The key-value pairs are formatted as strings separated by commas, instead of proper key: value entries inside the object.

Correct ES6 Implementation #

Assuming your original array looks like this (a list of the keys you want):

const originalArray = ["Quotes", "Flight Logs", "Currency Records", "FTD", "Maintenance Tracker"];

Here are two clean ES6 ways to convert it to valid JSON:

Method 1: Use Object.fromEntries()

This is the most concise approach for modern JavaScript environments:

// Convert array to an object where each key maps to true
const resultObj = Object.fromEntries(originalArray.map(item => [item, true]));
// Convert the object to valid JSON
const validJSON = JSON.stringify(resultObj, null, 2);

console.log(validJSON);

Method 2: Use Array.reduce()

If you need more control (or support slightly older environments), reduce works great too:

const resultObj = originalArray.reduce((acc, item) => {
  acc[item] = true;
  return acc;
}, {});

const validJSON = JSON.stringify(resultObj, null, 2);

console.log(validJSON);

What You'll Get #

Both methods will output this valid, properly formatted JSON:

{
  "Quotes": true,
  "Flight Logs": true,
  "Currency Records": true,
  "FTD": true,
  "Maintenance Tracker": true
}

Why Your Original Approach Failed #

It looks like you might have tried manually concatenating strings to build the JSON, which is error-prone. Always use JSON.stringify() on a properly structured JavaScript object—this ensures the output follows JSON syntax rules automatically.

内容的提问来源于stack exchange，提问作者Lee