JavaScript Map entries()
- Previous Page delete()
- Next Page get()
- Go to the Previous Level JavaScript Map Reference Handbook
Definition and usage
entries()
The method returns an iterator object that contains [key, value] pairs in the Map.
entries()
The method does not change the original Map.
instance
// Create a Map const fruits = new Map([ ["apples", 500], ["bananas", 300], ["oranges", 200] ]); // List all entries let text = ""; for (const x of fruits.entries()) { text += x; }
Syntax
map.entries()
Parameter
None.
Return value
Type | Description |
---|---|
Iterator | An iterable object that contains [key, value] pairs in the Map. |
Browser support
map.entries()
Is a feature of ECMAScript6 (ES6).
Starting from June 2017, all modern browsers support ES6 (JavaScript 2015):
Chrome | Edge | Firefox | Safari | Opera |
---|---|---|---|---|
Chrome 51 | Edge 15 | Firefox 54 | Safari 10 | Opera 38 |
May 2016 | April 2017 | June 2017 | September 2016 | June 2016 |
map.entries()
Not Supported in Internet Explorer.
- Previous Page delete()
- Next Page get()
- Go to the Previous Level JavaScript Map Reference Handbook