auraIfAdvanced (salesforce lightning component)

auraIfAdvanced.auradoc

<aura:documentation>
	<aura:description>Documentation</aura:description>
	<aura:example name="ExampleName" ref="exampleComponentName" label="Label">

    <!--
    <c:auraIfAdvanced list="["a","b","c"]" element="b">
         WhateverU_NeedHere
    </c:auraIfAdvanced>
	-->

    </aura:example>
</aura:documentation>

auraIfAdvanced.cmp

<aura:component>
<aura:handler name="init" value="{!this}" access="global" action="{!c.doInit}" />
<aura:attribute name="list" type="Object[]" />
<aura:attribute name="element" type="String" />
<aura:attribute name="condition" type="Boolean" default="false" />

<aura:if isTrue="{!v.condition}">
    {!v.body}
</aura:if>
</aura:component>

auraIfAdvancedController.js

({
    doInit: function(component, event, helper) {
        if (component.get('v.list').indexOf(component.get('v.element')) > -0 )
             component.set('v.condition',true);
    }
})