diff options
Diffstat (limited to 'static/js')
-rw-r--r-- | static/js/cookbook.js | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/static/js/cookbook.js b/static/js/cookbook.js new file mode 100644 index 0000000..fc2177c --- /dev/null +++ b/static/js/cookbook.js @@ -0,0 +1,34 @@ +"use strict"; + +// Kindly copied from MartijnBraam's fathub sources +// https://sr.ht/~martijnbraam/fathub.org/ + +var serve_fraction = 1.0; + +function update_ingredient_list() { + var ingredients = document.querySelectorAll('td[data-amount]'); + for (var i = 0; i < ingredients.length; i++) { + var ingredient = ingredients[i]; + ingredient.innerText = ingredient.dataset.amount * serve_fraction; + } +} + +function adjust_serves() { + serve_fraction = this.value / this.dataset.original; + update_ingredient_list(); +} + +function add_dynamic_controls() { + var serves = document.querySelector("td[data-serves]"); + var spinner = document.createElement('INPUT'); + spinner.type = 'number'; + spinner.dataset.original = serves.dataset.serves; + spinner.value = serves.dataset.serves; + spinner.addEventListener('change', adjust_serves); + serves.innerHTML = ''; + serves.appendChild(spinner); +} + +document.addEventListener("DOMContentLoaded", function () { + add_dynamic_controls(); +}); |