alert without jquery

js/src/dom/data.js

@@ -0,0 +1,51 @@
+/**
+ * --------------------------------------------------------------------------
+ * Bootstrap (v4.0.0-beta): dom/data.js
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * --------------------------------------------------------------------------
+ */
+
+const mapData = (() => {
+  const storeData    = {}
+  return {
+    set(element, key, data) {
+      let id
+      if (element.key === undefined) {
+        element.key = {
+          key,
+          id
+        }
+      }
+
+      storeData[id] = data
+    },
+    get(element, key) {
+      if (element.key === undefined || element.key !== key) {
+        return null
+      }
+      const keyProperties = element.key
+      return storeData[keyProperties.id]
+    },
+    delete(element, key) {
+      if (element.key === undefined || element.key !== key) {
+        return
+      }
+      const keyProperties = element.key
+      delete storeData[keyProperties.id]
+    }
+  }
+})()
+
+const Data = {
+  setData(instance, key, data) {
+    mapData.set(instance, key, data)
+  },
+  getData(instance, key) {
+    mapData.get(instance, key)
+  },
+  removeData(instance, key) {
+    mapData.delete(instance, key)
+  }
+}
+
+export default Data

js/src/dom/eventHandler.js

@@ -1,13 +1,13 @@
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-beta): dom/event.js
+ * Bootstrap (v4.0.0-beta): dom/eventHandler.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
 
-const Event = {
+const EventHandler = {
   on(element, event, handler) {
-    if (typeof event !== 'string') {
+    if (typeof event !== 'string' || typeof element === 'undefined') {
       return
     }
     element.addEventListener(event, handler, false)
@@ -19,12 +19,12 @@ const Event = {
       handler()
       element.removeEventListener(event, complete, false)
     }
-    Event.on(element, event, complete)
+    EventHandler.on(element, event, complete)
   },
 
   trigger(element, event) {
-    if (typeof event !== 'string') {
-      return
+    if (typeof event !== 'string' || typeof element === 'undefined') {
+      return null
     }
 
     const eventToDispatch = new CustomEvent(event, {
@@ -32,7 +32,9 @@ const Event = {
       cancelable: true
     })
     element.dispatchEvent(eventToDispatch)
+
+    return eventToDispatch
   }
 }
 
-export default Event
+export default EventHandler

js/src/dom/selectorEngine.js

@@ -0,0 +1,42 @@
+/**
+ * --------------------------------------------------------------------------
+ * Bootstrap (v4.0.0-beta): dom/selectorEngine.js
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * --------------------------------------------------------------------------
+ */
+
+const SelectorEngine = {
+  matches: Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector,
+
+  find(selector) {
+    if (typeof selector !== 'string') {
+      return null
+    }
+
+    let selectorType = 'querySelectorAll'
+    if (selector.indexOf('#') === 0) {
+      selectorType = 'getElementById'
+      selector = selector.substr(1, selector.length)
+    }
+    return document[selectorType](selector)
+  },
+
+  closest(element, selector) {
+    let ancestor = element
+    if (!document.documentElement.contains(element)) {
+      return null
+    }
+
+    do {
+      if (SelectorEngine.matches.call(ancestor, selector)) {
+        return ancestor
+      }
+
+      ancestor = ancestor.parentElement
+    } while (ancestor !== null)
+
+    return null
+  }
+}
+
+export default SelectorEngine