JSFiddle - React, Tailwind, and code Playground
HTML
<select id="size" class="attribute_price">
<option value="small">Small</option>
<option value="large">Large</option>
</select>
<select id="color" class="attribute_price">
<option value="red">Red</option>
<option value="green">Green</option>
<option value="black">Black</option>
</select>
<select id="pattern" class="attribute_price">
<option value="solids">Solids</option>
<option value="checked">Checked</option>
<option value="dots">Dots</option>
</select>
<input type="hidden" id="small_red_solids" class="hidden_attribute_value">
<input type="hidden" id="small_black_dots" class="hidden_attribute_value">
<input type="hidden" id="large_green_checked" class="hidden_attribute_value">
JavaScript
// on page load
$( document ).ready(function() {
renderOptions();
});
$("select.attribute_price").on("change", function () {
renderOptions();
});
function renderOptions() {
// create an array of all of the possible values that it can be
// allowed_attribute_values = ['small_red', 'large_blue']
var allowed_attribute_values = [];
var all_attributes = document.getElementsByClassName("hidden_attribute_value");
for (var i = 0; i < all_attributes.length; i++) {
allowed_attribute_values.push(all_attributes[i].id);
}
function getAllPossibleValues(current_level, all_attributes) {
var depth_index = all_attributes.length;
var selected_combination = '';
for (var i = 0; i < depth_index; i++) {
if (i <= current_level) {
selected_combination += all_attributes[i].value;
if (i != all_attributes.length - 1) {
selected_combination += '_';
}
}
}
// hide all lower options
for (var i = current_level + 1; i < depth_index; i++) {
var selectedIdOptions = all_attributes[i].options;
all_attributes[i].value = null
for (var j = 0; j < selectedIdOptions.length; j++) {
// hide all lower options
selectedIdOptions[j].hidden = true;
var el = allowed_attribute_values.find(a => a.includes(selected_combination + selectedIdOptions[j].value));
if (el) {
selectedIdOptions[j].hidden = false;
}
}
}
}
if (event) {
var id = event.target.id;
} else {
var id = document.getElementsByClassName("attribute_price")[0].id;
}
var other_attributes = document.getElementsByClassName("attribute_price");
for (var i = 0; i < other_attributes.length; i++) {
if (other_attributes[i].id == id) {
allPossibleValues = getAllPossibleValues(i, other_attributes);
// we dont want to go deeper as of now
break;
}
...