MAGETWO-33932: Add ability to initialize modules by selector

- Remove unnecessary logic

Author: Denys Rul

lib/web/mage/apply/main.js

@@ -9,7 +9,8 @@ define([
 ], function (_, $, processScripts) {
     'use strict';
 
-    var dataAttr = 'data-mage-init';
+    var dataAttr = 'data-mage-init',
+        nodeSelector = '[' + dataAttr + ']';
 
     /**
      * Initializes components assigned to a specfied element via data-* attribute.
@@ -38,17 +39,11 @@ define([
      * @returns {Array} An array of elements with 'data-mage-init' attribute.
      */
     function getElems() {
-        var body = document.body,
-            elems;
+        var elems;
 
-        elems = body.querySelectorAll('[' + dataAttr + ']');
-        elems = _.toArray(elems);
+        elems = document.querySelectorAll(nodeSelector);
 
-        if (body.hasAttribute(dataAttr)) {
-            elems.unshift(body);
-        }
-
-        return elems;
+        return _.toArray(elems);
     }
 
     /**

lib/web/mage/apply/scripts.js

@@ -48,17 +48,19 @@ define([
      * @param {String} selector - Selector for the elements.
      */
     function processElems(components, selector) {
-        var setFn,
-            elems;
+        var elems,
+            iterator;
 
         if (selector === '*') {
             addVirtual(components);
-        } else {
-            elems = document.querySelectorAll(selector);
-            setFn = setData.bind(null, components);
 
-            _.toArray(elems).forEach(setFn);
+            return;
         }
+
+        elems = document.querySelectorAll(selector);
+        iterator = setData.bind(null, components);
+
+        _.toArray(elems).forEach(iterator);
     }
 
     /**