I'm looking for an elegant way to do the following:
I have a JS object:
var sObject = {};
sObject[Col1] = "Value1";
sObject[Col2] = "Value2";
sObject[Col2] = "Value3";
I also have an array
var arrayCols=[];
arrayCols.push("Col2");
What I am trying to do is remove all the key/values from sObject where Key != arrayCols key
Once the needful is done, my sObject should only contain Col2:Value2 as Col2 is the only key in the arrayCols
I'm trying something along the lines of:
var sObject = {};
sObject['Col1'] = "Value1";
sObject['Col2'] = "Value2";
sObject['Col2'] = "Value3";
var arrayCols = [];
arrayCols.push("Col2");
let newObject = {};
for (const [key, value] of Object.entries(sObject)) {
if (key in arrayCols) {
newObject[key] = value;
}
}
console.log(newObject);You can use Object.fromEntries and map:
var obj = { Col1: "Value1", Col2: "Value2", Col3: "Value3" };
var cols = ["Col2"];
var result = Object.fromEntries(cols.map(col => [col, obj[col]]));
console.log(result);E. g. using reduce:
var sObject = {};
sObject.Col1 = "Value1";
sObject.Col2 = "Value2";
sObject.Col2 = "Value3";
var arrayCols = [];
arrayCols.push("Col2");
sObject = arrayCols.reduce((a, k) => (a[k] = sObject[k], a), {})
console.log(sObject)