Map the key value of one object to the corresponding attribute in another object array according to the key of the object

problem description 

var obj ={
  apple: 1,
  banana:2,
  li:30
};
var arr = [
  {id:"1",text:"",key:"apple", value:""},
  {id:"2",text:"", key:"li",value:""},
  {id:"3",text:"", key:"banana", value:""}
];

// :
var newArr = [
  {id:"1",text:"",key:"apple", value:"1"},
  {id:"2",text:"", key:"li",value:"2"},
  {id:"3",text:"", key:"banana", value:"30"}
];

how is it implemented?

Javascript
Jul.13,2022

isn't the pear 30. 

var obj ={
  apple: 1,
  banana:2,
  li:30
}
var arr = [
  {id:'1',text:'',key:'apple', value:''},
  {id:'2',text:'', key:'li',value:''},
  {id:'3',text:'', key:'banana', value:''}
]

const newArr = arr.map(o => {
  o.value = obj[o.key]
  return o
})

console.log(newArr)

clipboard.png

if it helps you, please upvote or adopt 

var newArr = arr.map(item=>{
    let newObj = JSON.parse(JSON.stringify(item))
    let value = obj[ newObj[key] ]
    newObj.value = value ? value : ''
    return newObj
})

var data = arr.map (function (item) {

) 
item.value = obj[item.key];
return item

});

Previous: Weex- v cannot download @ weex-cli/core

Next: In the springcloud micro-service project, the zuul routing static resource has been timed out, how to configure it?

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
© 2021 CodesHelper
Advertising Contact us About us
Menu