How to loop through an object array and output the array with a specific object property javascript

Question

var obo = [{
 "parcelId": "009",
 "userid": "tomi",
 "location": "kwara"
 },
 {
 "parcelId": "009",
 "userid": "tomi",
 "location": "kwara"
 },
 {
 "parcelId": "009",
 "userid": "tomi",
 "location": "kwara"
 },
 {
 "parcelId": "009",
 "userid": "tomi",
 "location": "kwara"
 }, {
 "parcelId": "009",
 "userid": "tomi",
 "location": "kwara"
 }, {
 "parcelId": "009",
 "userid": "tomi",
 "location": "kwara"
 }
]

I want to loop through and return the array. i have tried splice its not working

var obo = [{
 "userid": "tomi",
 "location": "kwara"
 },
 {
 "userid": "tomi",
 "location": "kwara"
 },
 {
 "userid": "tomi",
 "location": "kwara"
 }
]

Am trying to populate the array so as not to have parcelid in it

• squeekyDave: What is your specific property, which property in the array are you looking for?

Answer 1

You can use .map() with some object destructuring:

var data = [
 {"parcelId": "009", "userid": "tomi", "location": "kwara"},
 {"parcelId": "009", "userid": "tomi", "location": "kwara"},
 {"parcelId": "009", "userid": "tomi", "location": "kwara"}
];
var result = data.map(({userid, location, ...rest}) => ({userid, location}));
console.log(result);

.as-console-wrapper { max-height: 100% !important; top: 0; }

References:

• Array.prototype.map()
• Object Destructuring

Answer 2

You need to use .map()

obo = obo.map(function(item){
 return {
 userid: item.userid,
 location: item.location
 };
});

var obo = [
 {
 "parcelId": "009",
 "userid": "tomi",
 "location": "kwara"
 },
 {
 "parcelId": "009",
 "userid": "tomi",
 "location": "kwara"
 },
 {
 "parcelId": "009",
 "userid": "tomi",
 "location": "kwara"
 }
];
obo = obo.map(function(item){
 return {
 userid: item.userid,
 location: item.location
 };
});
console.log(obo);

• charlietfl: Since delete mutates original can do it in any loop. No real need to create new array using map() if using mutation approach

Answer 3

How about that with Array.prototype.map()?

var obo = [{
 "parcelId": "009",
 "userid": "tomi",
 "location": "kwara"
 },
 {
 "parcelId": "009",
 "userid": "tomi",
 "location": "kwara"
 },
 {
 "parcelId": "009",
 "userid": "tomi",
 "location": "kwara"
 }
]
var expected = [];
obo.map((elm, ind) => {
 expected.push({
 "userid": elm.userid,
 "location": elm.location
 })
})
console.log(expected)

Answer 4

You can try something like this

obo = obo.map(el => {
 let obj = {
 userid: el.userid,
 location: el.location
 };
 return obj;
});

or for a one liner, you can do this

obo = obo.map(({userid,location})=>({userid,location})));