How to convert an array of key-value tuples into an object
As baao notes, since 2019 you can use Object.fromEntries(arr) (docs) to do exactly this on all modern browsers:
var arr = [['cardType', 'iDEBIT'],
['txnAmount', '17.64'],
['txnId', '20181']];
console.log(Object.fromEntries(arr));If that’s not available, my previous solution was to map to an array of key-value objects and combine the objects by spreading into Object.assign:
Object.assign(...arr.map(([key, val]) => ({[key]: val})))
Update June 2020
ECMAScript 2021 brings Object.fromEntries which does exactly the requirement:
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);https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/fromEntries
This will do it:
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' ] ];
var obj = {};
array.forEach(function(data){
obj[data[0]] = data[1]
});
console.log(obj);