将新键添加到数组对象javascript

Question

const images =[
  { uri: 'images1' }, 
  { uri: 'images2' }, 
  { uri: 'images3' }, 
  { uri: 'image4' }, 

]

and I want to add key to each object as

const newimages =[
  { source: { uri: 'images1' } },
  { source: { uri: 'images2' } },
  { source: { uri: 'images3' } },
  { source: { uri: 'images4' } }
]

Please help me as I am new to this programming field.

Answer 1

Use .map to transform one array into another based on its elements:

 const images =[ { uri: 'images1' }, { uri: 'images2' }, { uri: 'images3' }, { uri: 'image4' }, { uri: 'images5' }, ]; const newImages = images.map(({ uri }) => ({ source: { uri } })); console.log(newImages); 

Answer 2

您要使用地图：

const newimages = images.map((i) => ({ source: i }))

Answer 3

Welcome to JavaScript!
Maybe you could try using a for loop like this:

var images =[
  { uri: 'images1' }, 
  { uri: 'images2' }, 
  { uri: 'images3' }, 
  { uri: 'image4' }, 

];

var newImages = [];

for (i = 0; i < images.length; i++){
  newImages.push({
    source: images[i]
  })
}

console.log(newImages)