基于字典键值对动态生成JSON的JavaScript实现疑问

It looks like you're almost there! The main issue with your current code is that you're creating a new empty item object every iteration of the forEach loop, but you're not accumulating those key-value pairs into a single final object. Here's how to fix it:

• Initialize your target object first: Create the empty highlighted_color object outside the loop so it persists across iterations.
• Populate the object in the loop: Instead of making a new item each time, assign each key-value pair directly to your target object.

Here's the corrected code:

// Start with an empty object to build on
var highlighted_color = {};

// Iterate over each entry in your data object
Object.entries(data).forEach(([key, value]) => {
  // Add each key-color pair to the target object
  highlighted_color[key] = value;
});

// Now highlighted_color matches your desired structure!
console.log(highlighted_color);

Shorter Alternatives (If Applicable) #

If your data object already contains exactly the keys and values you need (no extra properties to exclude), you can use these concise methods instead of a loop:

• Object spread syntax:

  var highlighted_color = {...data};
  

• Object.assign:

  var highlighted_color = Object.assign({}, data);
  

A quick note: I renamed values to value in the loop since each entry gives a single color value—it makes the code a bit more readable and accurate!

内容的提问来源于stack exchange，提问作者Alan John J