perf: 修改名称

apps/templates/_mfa_login_field.html

@@ -78,17 +78,15 @@
             $(ele).attr('name', '').attr('required', false)
         })
 
-        const currentMFAInput = $('#mfa-' + name + ' .input-style')
-        currentMFAInput.attr('name', 'code').attr('required', true)
+        const currentMFAInputRef = $('#mfa-' + name + ' .input-style')
+        currentMFAInputRef.attr('name', 'code').attr('required', true)
 
         // 登录页时，不应该默认focus
-        if ($('input[name="username"]').length == 0) {
-            currentMFAInput.focus()
+        const usernameRef = $('input[name="username"]')
+        if (!usernameRef || usernameRef.length === 0) {
+            currentMFAInputRef.focus()
         }
-        $('#mfa-' + name + ' .input-style')
-            .attr('name', 'code')
-            .attr('required', true)
-            .focus()
+        currentMFAInputRef.attr('name', 'code').attr('required', true)
     }
 
     function sendChallengeCode(currentBtn) {