Bitovi

forEach

Call a function on each property of a DefineMap.

`map.forEach( callback( value, propName ) )`

forEach iterates through the map instance, calling a function for each property value and key.

import {DefineMap} from "can";

const names = [];
const map = new DefineMap({a: "Alice", b: "Bob", e: "Eve"});

map.forEach( (value, propName) => names.push(value) );

console.log( names ); //-> ["Alice", "Bob", "Eve"]

Parameters

callback {function(value, propName)}:
The function to call for each property The value and key of each property will be passed as the first and second arguments, respectively, to the callback.

Returns

{can-define/map/map}:

The map instance for chaining.

Use

If the callback returns false the loop will stop.

import {DefineMap} from "can";

const names = [];
const map = new DefineMap({a: "Alice", b: "Bob", e: "Eve"});

map.forEach( (value, propName) => {
  if (propName === "e") {
    return false;
  }
  names.push(value);
} );

console.log( names ); //-> ["Alice", "Bob"]