Support passing Element into loading container property

docs/components/loading.md

@@ -10,6 +10,11 @@ API:
    parameters:
    description: function to close loading.
    default: null
+ - name: container
+   type: HTMLElement, String
+   parameters: null
+   description: Container that will be loading, pass a HTMLElement or query selector
+   default: null
  - name: color
    type: String
    parameters: RGB, HEX, primary, danger, success, dark, warning
@@ -325,7 +330,7 @@ For the examples, the request or the delay is simulated with `setTimeout`.
 ```html
 <template lang="html">
   <div class="centerx">
-    <vs-button id="button-with-loading" class="vs-con-loading__container" @click="openLoadingContained" vs-type="relief" vs-color="primary">Button with Loading</vs-button>
+    <vs-button ref="loadableButton" id="button-with-loading" class="vs-con-loading__container" @click="openLoadingContained" vs-type="relief" vs-color="primary">Button with Loading</vs-button>
     <vs-button @click="openLoadingInDiv" vs-type="relief" vs-color="primary">Div with Loading</vs-button>
     <div class="fill-row">
       <div id="div-with-loading" class="vs-con-loading__container">Load Me!</div>
@@ -346,11 +351,11 @@ export default {
       this.$vs.loading({
         background: this.backgroundLoading,
         color: this.colorLoading,
-        container: '#button-with-loading',
+        container: this.refs.loadableButton,
         scale: 0.45
       })
       setTimeout( ()=> {
-        this.$vs.loading.close('#button-with-loading > .con-vs-loading')
+        this.$vs.loading.close(this.refs.loadableButton)
       }, 3000);
     },
     openLoadingInDiv(){

src/functions/vsLoading/index.js

@@ -16,20 +16,29 @@ export default {
       instance.$data.text = parameters.text
       instance.$data.clickEffect = parameters.clickEffect
       if(parameters.container) {
-        containerx = document.querySelector(parameters.container)
+        containerx = parameters.container instanceof Element ? parameters.container : document.querySelector(parameters.container)
       }
     }
     instance.vm = instance.$mount();
     containerx.insertBefore(instance.vm.$el, containerx.firstChild)
   },
   close(elx){
-    let el = elx || 'body > .con-vs-loading'
-    let loadings = document.querySelectorAll(el)
-    loadings.forEach((loading)=>{
-      loading.classList.add('beforeRemove')
-      setTimeout(()=>{
-        loading.remove()
-      },300)
-    })
+    let loadings
+
+    if (elx instanceof Element) {
+      // Mimicking the behavior of doing `elx.querySelectorAll('> .con-vs-loading')` but `>` is not well supported.
+      // We are doing this because we can only add the respective classes to .con-vs-loading
+      loadings = Array.from(elx.children).filter(el => el.classList.contains('.con-vs-loading'))
+    } else {
+      loadings = document.querySelectorAll(elx || 'body > .con-vs-loading')
+    }
+
+    loadings
+      .forEach((loading)=>{
+        loading.classList.add('beforeRemove')
+        setTimeout(()=>{
+          loading.remove()
+        },300)
+      })
   }
 }