Added vanilla JS component system

resources/assets/js/components/index.js

@@ -0,0 +1,21 @@
+
+let componentMapping = {
+    'dropdown': require('./dropdown'),
+};
+
+window.components = {};
+
+let componentNames = Object.keys(componentMapping);
+
+for (let i = 0, len = componentNames.length; i < len; i++) {
+    let name = componentNames[i];
+    let elems = document.querySelectorAll(`[${name}]`);
+    if (elems.length === 0) continue;
+
+    let component = componentMapping[name];
+    if (typeof window.components[name] === "undefined") window.components[name] = [];
+    for (let j = 0, jLen = elems.length; j < jLen; j++) {
+         let instance = new component(elems[j]);
+         window.components[name].push(instance);
+    }
+}