if we create one object like
const userDetails={firstname:'karan',lastname:'khimani'}
then expected output like
[["firstname", "karan"], ["lastname", "khimani"]]
How did i convert this?
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3Can you please show us your attempt on solving this?Thum Choon Tat– Thum Choon Tat2019-04-24 09:26:48 +00:00Commented Apr 24, 2019 at 9:26
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2 Answers
Use Object.entries:
const userDetails = { firstname: "karan", lastname: "khimani" };
const arr = Object.entries(userDetails);
console.log(arr);I believe this is an ES7 feature - so if you need to support older browsers, use map with Object.keys:
var userDetails = { firstname: "karan", lastname: "khimani" };
var arr = Object.keys(userDetails).map(function(key) {
return [key, userDetails[key]]
});
console.log(arr);
3 Comments
Karan Khimani
i'm getting
0: ["firstname", "karan"]1: ["lastname", "khimani"] in different keys
Jack Bashford
@KaranKhimani Try pressing
Run code snippet above, it works perfectly. I also believe what you're describing is a browser's console's way of showing the contents of an array.Karan Khimani
exaclty let me try
So what you want to do is create an array, which contains keys and values as arrays.
You should have a look at Object.keys and Object.entries.
Soluce are below, but try to find it yourself first looking at the documentation of the functions I've given you.
const userDetails = {
firstname: 'karan',
lastname: 'khimani'
};
const transformed = Object.keys(userDetails).map(x => [x, userDetails[x]]);
console.log(transformed);Why not always use Object.entries? Because It's not well supported on every browser.
const userDetails = {
firstname: 'karan',
lastname: 'khimani'
};
const transformed = Object.entries(userDetails);
console.log(transformed);
2 Comments
Karan Khimani
Getting console error
Uncaught SyntaxError: Identifier 'userDetails' has already been declared @Grégory NEUT
Orelsanpls
I think that you copy pasted my code and appended it to your existing code. If you do so, the variable
userDetails will be declared two times and that's why you have the error. Removes either your declaration or mine. You should follow a javascript tutorial