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i am getting undefined when i try to pass attribute value (from button which opens a modal) to Java script function.

Component:

<aura:component>
.....
 <button type="button" data-id="test" onclick="{!c.DetailPage}" class="btn btn-warning btn-lg pull-right" data-toggle="modal" data-target="#myModal">Click</button>
....

</aura:component>

JS Controller:

 DetailPage : function(component, event, helper) {
// tried multilple scenarios..all returning "undefined"
        alert($(this).attr('data-id'));
        alert($(this).attr("data-id"));
        alert($(this).data('id'));
        alert($(this).data("id"));
        alert($(this).data().id);
    },

After retrieving this value i need to set this value to my drop down list..

<aura:attribute name="options" type="String[]"/>

<button type="button" data-id="{!v.options}"    ...../>
..
<ui:inputSelect aura:id="ProductPlatform" class="form-control" label="Product Platform" change="{!c.onSelectChange}" required="true"> 
    <aura:iteration items="{!v.pltfrmGrpOptions}" var="level" indexVar="index">
        <aura:if isTrue="{!index ==0}">
        <ui:inputSelectOption value="true" label="{!level}" text="{!level}"/>
        <aura:set attribute="else">
        <ui:inputSelectOption label="{!level}" text="{!level}" />
        </aura:set>
        </aura:if>
    </aura:iteration>
</ui:inputSelect>
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1 Answer 1

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you can get current button attributes from event object using following way

event.target.getAttribute("data-id")
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  • Question Edited. This helps. But i need to set this data-id value to my drop down list. on the first attempts alert(event.target.getAttribute("data-id")) returns null, on second it gives correct value.
    – Anchal Jindal
    Nov 26, 2015 at 9:49
  • i can use component.set() to set the value ...Coming to (event.target.getAttribute("data-id") but it returns null on first click.. Second click it gives value... but do not set the Drop down.
    – Anchal Jindal
    Nov 27, 2015 at 6:09

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