How to access custom data from a customer session in JS file?

Question

Is there any way to access custom data stored in a customer session from a JS file ( without Ajax call ).

Here is the code for controller:

<?php
namespace Company\Vendor\Controller\Index;
use Magento\Framework\App\Action\Action;
use Magento\Framework\App\Action\Context;
use Magento\Customer\Model\Session;
class Index extends Action
{
 protected $_customerSession;
 public function __construct(
 Context $context,
 Session $customerSession
 ) {
 parent::__construct($context);
 $this->_customerSession = $customerSession;
 }
 public function execute()
 {
 $this->_customerSession->setMyValue('yes');
 }
}

To access the MyValue value, we can use $this->_customerSession->getMyValue();

How can I get the MyValue value in a JS file?

Answer 1

[Not sure it's the correct way or best way] We need to set uncacheable page (will impact the performance). This is because when enabling the full page cache, the customer session will be clear.

• vedu: Thanks for your answer but as you said it will impact the performance :|