Bitovi

forEach

Call a function for each element of a DefineList.

`list.forEach(callback[, thisArg])`

Loops through the values of the list, calling callback for each value until the list ends or false is returned.

import {DefineList} from "can";

const list = new DefineList([1, 2, 3]);

list.forEach((element, index, list) => {
    list.set(index, element * element);
});

console.log(list.get()); //-> [1, 4, 9]

Parameters

callback {function(item, index, list)}:
A function to call with each element of the DefineList. The three parameters that callback gets passed are:
- item - the element at index.
- index - the current element of the list.
- list - the DefineList the elements are coming from.
If the callback returns false the looping stops.
thisArg {Object}:
The object to use as this inside the callback.

Returns

{can-define/list/list}:

The list instance.

Use

If false is returned by the callback the forEach loop would exit.

import {DefineList} from "can";

const list = new DefineList([1, 2, 3, 4, 5]);

list.forEach((element, index, list) => {
    if (index === 2) {
      return false;
    }
    list.set(index, `index: ${index}`);
});

console.log(list.get()); //-> ["index: 0", "index: 1", 3, 4, 5]