perf: cache chars length in GetYoDigits

This improves performance in particular for older browsers.

diff --git a/js/foundation.core.utils.js b/js/foundation.core.utils.js
index 4c6893eb2f360aeb8e6ed663afad81ec18c6c6e1..f9d04b3922769a9a2017ef29b16898d3eca52d0d 100644 (file)
--- a/js/foundation.core.utils.js
+++ b/js/foundation.core.utils.js
@@ -22,8 +22,9 @@ function rtl() {
 function GetYoDigits(length = 6, namespace){
   let str = '';
   const chars = '0123456789abcdefghijklmnopqrstuvwxyz';
+  const charsLength = chars.length;
   for (let i = 0; i < length; i++) {
-    str += chars[Math.floor(Math.random() * chars.length)];
+    str += chars[Math.floor(Math.random() * charsLength)];
   }
   return namespace ? `${str}-${namespace}` : str;
 }