CODEWITHSUNDEEP
javascript
karolis2017
karolis2017

Reputation: 2415

how to access object property using forEach loop?

I'm looping through object sliced where I want to extract properties name into theRest variable. With code below I get an error Cannot read property name of undefined

My object sliced gives me an array: [{name: 'Bart'},{name: 'Lisa'},{name: 'Maggie'}]

const theRest = sliced.map((item, i) => {
  item[i].name;
})

Sorry for variables naming if tht's confusing but I hope you get an idea.

Upvotes: 0

Views: 2295

Answers (1)

LMulvey
LMulvey

Reputation: 1670

The reason that you're getting an error is because when you're using .forEach(), item[i] would be looking for an index in an object that isn't an array (sliced is an array, item is the currentValue in the array being processed). If you wanted to use your code, you should change item[i].name to item.name and it should work. I recommend that you use .map() instead to get the results you're looking for.

let arr = [{name: 'Bart'},{name: 'Lisa'},{name: 'Maggie'}];
let theRest = arr.map((item) => item.name);
console.log(...theRest);

Upvotes: 3

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