fix: js perf tests

modules/js/perf/perf_helpfunc.js and target tests, e.g. perf_gaussianBlur.js contained "const isNodeJs", leading to re-definition when using associated *.html files.

modules/js/perf/perf_64bits.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if (isNodeJs) {
   var Benchmark = require('benchmark');

modules/js/perf/perf_helpfunc.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if(isNodeJs) {
   var Base = require("./base");

modules/js/perf/perf_imgproc/perf_blur.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if　(isNodeJs)　{
   var Benchmark = require('benchmark');

modules/js/perf/perf_imgproc/perf_cvtcolor.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if (isNodeJs) {
   var Benchmark = require('benchmark');

modules/js/perf/perf_imgproc/perf_dilate.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if　(isNodeJs)　{
   var Benchmark = require('benchmark');

modules/js/perf/perf_imgproc/perf_erode.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if　(isNodeJs)　{
   var Benchmark = require('benchmark');

modules/js/perf/perf_imgproc/perf_filter2D.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if　(isNodeJs)　{
   var Benchmark = require('benchmark');

modules/js/perf/perf_imgproc/perf_gaussianBlur.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if　(isNodeJs)　{
   var Benchmark = require('benchmark');

modules/js/perf/perf_imgproc/perf_medianBlur.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if　(isNodeJs)　{
   var Benchmark = require('benchmark');

modules/js/perf/perf_imgproc/perf_pyrDown.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if　(isNodeJs)　{
   var Benchmark = require('benchmark');

modules/js/perf/perf_imgproc/perf_remap.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if　(isNodeJs)　{
   var Benchmark = require('benchmark');

modules/js/perf/perf_imgproc/perf_resize.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if　(isNodeJs)　{
   var Benchmark = require('benchmark');

modules/js/perf/perf_imgproc/perf_scharr.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if　(isNodeJs)　{
   var Benchmark = require('benchmark');

modules/js/perf/perf_imgproc/perf_sobel.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if　(isNodeJs)　{
   var Benchmark = require('benchmark');

modules/js/perf/perf_imgproc/perf_threshold.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if　(isNodeJs)　{
   var Benchmark = require('benchmark');

modules/js/perf/perf_imgproc/perf_warpAffine.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if　(isNodeJs)　{
   var Benchmark = require('benchmark');

modules/js/perf/perf_imgproc/perf_warpPerspective.js

@@ -1,4 +1,4 @@
-const isNodeJs = (typeof window) === 'undefined'? true : false;
+var isNodeJs = (typeof window) === 'undefined'? true : false;
 
 if　(isNodeJs)　{
   var Benchmark = require('benchmark');