updated regex rules for checking valid url

src/helper.js

@@ -36,12 +36,10 @@ const helper = {
         }, delay);
     },
     isURL(url) {
-        const pattern = new RegExp('^(https?:\\/\\/)?' + // protocol
+        let regex = '^(?:(?:https?|ftp)://)(?:\\S+(?::\\S*)?@|\\d{1,3}(?:\.\\d{1,3}){3}|(?:(?:[a-z\\d\\u{00a1}-\\u{ffff}'
-            '((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|' + // domain name
+            + ']+-?)*[a-z\\d\\u{00a1}-\\u{ffff}]+)(?:\.(?:[a-z\\d\\u{00a1}-\\u{ffff}]+-?)*[a-z\\d\\u{00a1}-\\u{ffff}]+)*(?:\.'
-            '((\\d{1,3}\\.){3}\\d{1,3}))' + // OR ip (v4) address
+            + '[a-z\\u{00a1}-\\u{ffff}]{2,6}))(?::\\d+)?(?:[^\\s]*)?$';
-            '(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*' + // port and path
+        const pattern = new RegExp(regex, 'iu');
-            '(\\?[;&a-z\\d%_.~+=-]*)?' + // query string
-            '(\\#[-a-z\\d_]*)?$', 'i'); // fragment locator
         return pattern.test(url);
     },
     isMagnetURI(url) {