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Bitovi

backup

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Save the values of the properties of an Map.

map.backup()

backup backs up the current state of the properties of an Observe and marks the Observe as clean. If any of the properties change value, the original values can be restored with [can.Define.map.backup.prototype.restore restore].

Returns

{can-define}:

The map, for chaining.

Example

import DefineMap from "can-define/map/map";
import defineBackup from "can-define-backup";

const recipe = new DefineMap( "Recipe", {
    title: "Pancake Mix",
    yields: "3 batches",
    ingredients: [ {
        ingredient: "flour",
        quantity: "6 cups"
    }, {
        ingredient: "baking soda",
        quantity: "1 1/2 teaspoons"
    }, {
        ingredient: "baking powder",
        quantity: "3 teaspoons"
    }, {
        ingredient: "salt",
        quantity: "1 tablespoon"
    }, {
        ingredient: "sugar",
        quantity: "2 tablespoons"
    } ]
} );
defineBackup(recipe);

recipe.backup();

recipe.title = "Flapjack Mix";
recipe.title;     // "Flapjack Mix"

recipe.restore();
recipe.title;     // "Pancake Mix"

CanJS is part of DoneJS. Created and maintained by the core DoneJS team and Bitovi. Currently 4.3.0.

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