macao-pos/static/js/sell.js

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JavaScript
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2017-03-26 21:17:07 +02:00
function updateTotal(amount) {
total_el = document.getElementById('total')
total = parseFloat(total_el.innerText)
total += amount
total_el.innerText = total.toFixed(2)
}
function renderBasketItem(uid, name) {
return '<button id="basketitem_' + uid + '"' +
'onclick="delProduct(' + uid + ')">' +
'1 x ' + name +
'</button>'
}
function addProduct(uid) {
// This is the hidden input element inside the form. We'll use this DOM
// element to keep informations about the product, such as the name,
// the price and the value inside the 'data-' tag.
form_el = document.getElementById('prod_' + uid)
basket = document.getElementById('basket')
basket_el = document.getElementById('basketitem_' + uid)
form_el.value = parseInt(form_el.value) + 1
// If there is not a button for the given product inside the basket
// div we'll create it.
if (basket_el === null) {
basket.innerHTML += renderBasketItem(uid, form_el.dataset.name)
} else {
// Otherwise we'll just update it.
console.log(form_el.value)
new_text = form_el.value + ' x ' + form_el.dataset.name
basket_el.innerText = new_text
}
updateTotal(parseFloat(form_el.dataset.price))
}
function delProduct(uid) {
form_el = document.getElementById('prod_' + uid)
basket = document.getElementById('basket')
basket_el = document.getElementById('basketitem_' + uid)
form_el.value = parseInt(form_el.value) - 1
if (form_el.value == 0) {
basket.removeChild(basket_el)
} else {
new_text = form_el.value + ' x ' + form_el.dataset.name
basket_el.innerText = new_text
}
updateTotal(parseFloat(-form_el.dataset.price))
}