convert array to object in javascript
// This function counts instances of elements in an array
// the return object has the array elements as keys
// and number of occurrences as it's value
const arrToInstanceCountObj = arr => arr.reduce((obj, e) => {
obj[e] = (obj[e] || 0) + 1;
return obj;
}, {});
arrToInstanceCountObj(['h', 'e', 'l', 'l', 'o', 'w', 'o', 'r', 'l', 'd'])
/*
{
h: 1,
e: 1,
l: 3,
o: 2,
w: 1,
r: 1,
d: 1,
}
*/const convertArrayToObject = (array, key) =>
array.reduce(
(obj, item) => ({
...obj,
[item[key]]: item
}),
{}
);
function arrayToObject(arr) {
var obj = {};
for (var i = 0; i < arr.length; ++i){
obj[i] = arr[i];
}
return obj;
}
var colors=["red","blue","green"];
var colorsObj=arrayToObject(colors);//{0: "red", 1: "blue", 2: "green"}const names = ['Alex', 'Bob', 'Johny', 'Atta'];
// convert array to th object
const obj = Object.assign({}, names);
// print object
console.log(obj);
// {0: "Alex", 1: "Bob", 2: "Johny", 3: "Atta"}
const array = [ [ 'cardType', 'iDEBIT' ],
[ 'txnAmount', '17.64' ],
[ 'txnId', '20181' ],
[ 'txnType', 'Purchase' ],
[ 'txnDate', '2015/08/13 21:50:04' ],
[ 'respCode', '0' ],
[ 'isoCode', '0' ],
[ 'authCode', '' ],
[ 'acquirerInvoice', '0' ],
[ 'message', '' ],
[ 'isComplete', 'true' ],
[ 'isTimeout', 'false' ] ];
const obj = Object.fromEntries(array);
console.log(obj);