forked from M3-Academy/practice-time-shopping-list
82 lines
2.3 KiB
JavaScript
82 lines
2.3 KiB
JavaScript
document.addEventListener('DOMContentLoaded', function() {
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// manipulando o form
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const list = []
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const form = document.querySelector('.shopping-form')
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const itemInput = document.querySelector('.shopping-form-item-input')
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// constantes para os buttons
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const quantityInput = document.querySelector('.shopping-form-quantity-input')
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const incrementButton = document.querySelector('.shopping-form-increment-button')
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const decrementButton = document.querySelector('.shopping-form-decrement-button')
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const items = document.querySelector('.shopping-items')
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incrementButton.addEventListener("click", incrementQuantity)
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decrementButton.addEventListener("click", decrementQuantity)
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form.addEventListener('submit', addItemToList )
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function incrementQuantity() {
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const currentValue = Number(quantityInput.value) // valor que está dentro do input
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const newValue = currentValue + 1
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quantityInput.value = newValue
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}
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function decrementQuantity() {
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const currentValue = Number(quantityInput.value) // valor que está dentro do input
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const newValue = currentValue - 1
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if(newValue > 0) {
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quantityInput.value = newValue
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}
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}
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function addItemToList(event) {
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event.preventDefault() // evita eviar os dados quando se clica no button submit
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const itemName = event.target["item-name"].value // pegando o item que tem dentro do campo
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const itemQuantity = event.target["item-quantity"].value
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if(itemName !== "") {
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const item = {
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name: itemName,
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quantity: itemQuantity,
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};
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}
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list.push(item)
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renderListItems();
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resertInputs()
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// console.log(itemName, itemQuantity)
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// console.log(item)
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}
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// criando uma função redenrizando os itens da lista
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function renderListItems() {
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let itemsStructure = "";
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list.forEach(function(item) {
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itemsStructure += `
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<li class="shopping-item">
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<span>${item.name}</span>
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<span>${item.quantity}</span>
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</li>
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`;
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})
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items.innerHTML = itemsStructure
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}
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function resertInputs() {
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itemInput.value = "";
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quantityInput.value = 1;
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}
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})
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