Apply suggestions from code review

Co-authored-by: Athan <kgryte@gmail.com>
Signed-off-by: Athan <kgryte@gmail.com>

Author: kgryte

lib/node_modules/@stdlib/plot/base/view/lib/browser/app/editor/on_change.js

@@ -27,6 +27,7 @@ var isJSON = require( '@stdlib/assert/is-json' );
 var isString = require( '@stdlib/assert/is-string' ).isPrimitive;
 var trim = require( '@stdlib/string/base/trim' );
 var Number = require( '@stdlib/number/ctor' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var join = require( '@stdlib/array/base/join' );
 var log = require( './../log.js' );
 var config = require( './../config.js' );
@@ -120,7 +121,7 @@ function onChange( event ) {
 			n = Number( tmp );
 			if ( tmp === '' ) {
 				val = void 0;
-			} else if ( !isNaN( n ) ) {
+			} else if ( !isnan( n ) ) {
 				val = n;
 			} else if ( tmp.indexOf( ',' ) !== -1 ) {
 				tmp = tmp.split( /\s*,\s*/ );