Rename private attribute _element to _el

Change-Id: I9c7a31bd6844636737ffa6456562b997f5e370a3
diff --git a/dev/js/src/match/treearc.js b/dev/js/src/match/treearc.js
index 117936c..a90fbed 100644
--- a/dev/js/src/match/treearc.js
+++ b/dev/js/src/match/treearc.js
@@ -441,8 +441,8 @@
      * Get the svg element

      */

     element : function () {

-      if (this._element !== undefined)

-        return this._element;

+      if (this._el !== undefined)

+        return this._el;

 

       // Create svg

       const svg = this._c("svg");

@@ -468,8 +468,8 @@
       arrow.setAttribute("d", "M 0,-5 0,5 10,0 Z");

       marker.appendChild(arrow);

 

-      this._element = svg;

-      return this._element;

+      this._el = svg;

+      return this._el;

     },

 

 

@@ -643,12 +643,12 @@
      *   This is identical to treehierarchy

      */

     center : function () {

-      if (this._element === undefined)

+      if (this._el === undefined)

        return;

 

-      const treeDiv = this._element.parentNode;

+      const treeDiv = this._el.parentNode;

 

-      const cWidth = parseFloat(window.getComputedStyle(this._element).width);

+      const cWidth = parseFloat(window.getComputedStyle(this._el).width);

       const treeWidth = parseFloat(window.getComputedStyle(treeDiv).width);

       // Reposition:

       if (cWidth > treeWidth) {

@@ -661,7 +661,7 @@
     // Show the element

     show : function () {

       const t = this;

-      const svg = this._element;

+      const svg = this._el;

       const height = this.maxArc;

 

       // Delete old group