decentralized-internet
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An NPM library of programs to create decentralized web and distributed computing projects
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="EcomCart.html">EcomCart</a><ul class='methods'><li data-type='method'><a href="EcomCart.html#addItem">addItem</a></li><li data-type='method'><a href="EcomCart.html#addProduct">addProduct</a></li><li data-type='method'><a href="EcomCart.html#clear">clear</a></li><li data-type='method'><a href="EcomCart.html#increaseItemQnt">increaseItemQnt</a></li><li data-type='method'><a href="EcomCart.html#removeItem">removeItem</a></li><li data-type='method'><a href="EcomCart.html#reset">reset</a></li><li data-type='method'><a href="EcomCart.html#save">save</a></li></ul></li></ul><h3>Modules</h3><ul><li><a href="module-@ecomplus_shopping-cart.html">@ecomplus/shopping-cart</a></li></ul><h3>Events</h3><ul><li><a href="EcomCart.html#event:addItem">addItem</a></li><li><a href="EcomCart.html#event:change">change</a></li><li><a href="EcomCart.html#event:clear">clear</a></li><li><a href="EcomCart.html#event:increaseItemQnt">increaseItemQnt</a></li><li><a href="EcomCart.html#event:removeItem">removeItem</a></li><li><a href="EcomCart.html#event:reset">reset</a></li><li><a href="EcomCart.html#event:save">save</a></li></ul><h3>Global</h3><ul><li><a href="global.html#ecomCart">ecomCart</a></li></ul>
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<h1 class="page-title">methods/increase-item-qnt.js</h1>
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<pre class="prettyprint source linenums"><code>import fixItemQuantity from './../lib/fix-item-quantity'
import fixSubtotal from './../lib/fix-subtotal'
export default ({ data, save }, emitter, [itemId, quantity = 1, canSave = true]) => {
const item = data.items.find(({ _id }) => _id === itemId)
if (!item) {
return null
}
item.quantity += quantity
fixItemQuantity(item)
fixSubtotal(data)
/**
* @event EcomCart#increaseItemQnt
* @type {object}
* @property {object} data - Shopping cart data
* @property {object} item - Cart item changed
* @example ecomCart.on('increaseItemQnt', ({ data, item }) => { console.log(data, item) })
*/
emitter.emit('increaseItemQnt', { data, item })
if (canSave) {
save(false)
}
return item
}
/**
* @method
* @name EcomCart#increaseItemQnt
* @description Increase quantity of specific item by ID and save cart.
*
* @param {string} itemId - The unique object ID of item
* @param {integer} [quantity=1] - Quantity to increase (can be negative)
* @param {boolean} [canSave=true] - Save cart data
*
* @returns {object|null} Returns the updated item object or null
* when item not found.
*
* @example
ecomCart.increaseItemQnt('12300000000000000000000f', 3)
*/
</code></pre>
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