javascript - Putting another array as property into another array failed -


tried play spread of es6, didn't quite right

const arr1 = [{   gap: 10 }, {   gap: 20 }, {   gap: 30 }] const arr2 = [{   english: null }, {   france: null }]

how can produce new array, arr2's property become apart of arr1?

from jsfiddle:

    //expected new_arr /*[{   gap: 10,   english: null,   france: null }, {   gap: 20,   english: null,   france: null }, {   gap: 30,   english: null,   france: null }]*/

failed attempt https://jsfiddle.net/swu94gd5/

you want

const arr1 = [{    gap: 10  }, {    gap: 20  }, {    gap: 30  }]  const arr2 = [{    english: null  }, {    france: null  }]    const new_arr = arr1.map(obj => object.assign({}, obj, ...arr2));    console.log(new_arr);

note:

i had

const new_arr = arr1.map(obj => object.assign(obj, ...arr2));

but changing arr1[0].gap change new_arr[0].gap - code in snippet fixes that

re comment can explain ur definition of object assign in ur head?

i don't have definition in head

i use definition in documentation

the object.assign() method used copy values of enumerable own properties 1 or more source objects target object. return target object.

object.assign(target, ...sources)

mdn source


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