Magento – Label in Catalog view for Special Price (Magento 2)

In your template file, try to replace module name description with descriptioncontent.

app/design/frontend/{Name}/{theme}/Magento_Catalog/templates/product/js.phtml

<script>
// <![CDATA[
    require([
        'jquery',
        'descriptioncontent'
    ], function ($) {
        $(function () { // to ensure that code evaluates on page load
            alert('Check js.phtml');
            $('.product-info-main').ContentManagement();
        });
    });
// ]]>
</script>

You can use alternative way for overriding template. Use below code. It will work.

app/code/MyVendor/MyModule/etc/di.xml

<type name="\Magento\Catalog\Pricing\Render\FinalPriceBox">
        <plugin name="MyVendor_MyModule_change_template" type="MyVendor\MyModule\Plugin\FinalPricePlugin" />
</type>

MyVendor\MyModule\Plugin\FinalPricePlugin.php

<?php
namespace MyVendor\MyModule\Plugin;

class FinalPricePlugin
{
    public function beforeSetTemplate(\Magento\Catalog\Pricing\Render\FinalPriceBox $subject, $template)
    {
        $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
        $enable=$objectManager->create('MyVendor\MyModule\Helper\Data')->chkIsModuleEnable();
        if ($enable) {
            if ($template == 'Magento_Catalog::product/price/final_price.phtml') {
                return ['MyVendor_MyModule::product/price/final_price.phtml'];
            } 
            else
            {
                return [$template];
            }
        } else {
            return[$template];
        }
    }
}

Hope it will work for you.