Lightning Component:

<aura:component implements="flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId" access="global">
    
    <!--Attributes-->
    <aura:attribute name="accFields" type="Account"/>
    
    <!--Component Start-->
    
    <!--Lightning Force Data to get Account record-->
    <force:recordData aura:id="accRecordData"
                      layoutType="FULL"
                      recordId="{!v.recordId}"
                      targetFields="{!v.accFields}"
                      recordUpdated="{!c.handleRecordUpdate}"/>
    <!--Component End-->
</aura:component>

Lightning JS Controller:

({
    handleRecordUpdate: function(component, event, helper) {
        var accountFields = component.get("v.accFields");
        console.log('Account Name : '+ accountFields.Name);
    }
})