<aura:component controller="NavigationController" access="GLOBAL">
<ltng:require scripts="{!$Resource.Jquery224}" afterScriptsLoaded="{!c.scriptsLoaded}" /> ==> Tried latest version and also the old versions. but no luck
<!-- NavigateAndFocusDetails -->
<aura:handler name="init" value="{!this}" action="{!c.onCompLoad}"/>
<aura:attribute name="Contacts" type="Object[]"/>
    <div class="divCls">
            <aura:iteration items="{!v.Contacts}" var="con">
                <div id="{!con.Id}" tabindex='1' >
                    <span>{!con.FirstName}&nbsp;{!con.LastName}</span><br/>
                    <span>{!con.Account.Name }</span><br/>
                </div>
            </aura:iteration>
    </div>

({
    onCompLoad : function(component, event, helper) {
        //get all contacts from apex.
    },

    scriptsLoaded : function(comp,eve,help){
        var divId ='#0036F00002mvuebQAA';
        $(divId).addClass("highlight");
        alert($(divId).length);     ==> On f5, this comes as 0 and when cntrl+f5, the value returns 1.
    }
})