How can i get the aura:id dynamically from event attribute, the below example i was trying to get the aura:id to get the value, else you can think as aura:id might be some field APIname so i can pass this field name and value to controller to store the value dynamically.

code component:

<aura:component controller = "LC_AutoSave" implements="force:appHostable" >
        <ui:inputtext  value = ""  aura:id ="testtext"  blur = "{!c.autoSave}"/>
        <ui:inputtext value = "" aura:id ="testtext1"  blur = "{!c.autoSave}"/>
        <ui:inputtext value = "" aura:id ="testtext2"  blur = "{!c.autoSave}"/>



    autoSave : function(component, event, helper) {
        var a = event.getSource();

1 Answer 1


I'm pretty sure you just call component.getLocalId()

So it'd be:

var a = event.getSource();
var id = a.getLocalId();

To find the local ID for a component in JavaScript, use cmp.getLocalId().

Source here:

  • It works to me ,Thanks, also please suggest how could i find these methods information, i searched aura framework documentation didn't find it.
    – Raj_SFDC
    Sep 13, 2016 at 19:58
  • That's a tricky one. Sometimes you just need to know what to search for. That will come with experience. I'll update the question with the link. Sep 13, 2016 at 20:04
  • This is great however, i notice that it works for me as a static value, eg: id="tehidval" however, if i use it like id="{!v.attribute}" becuase this is dynamic generated by an action, then it will display {!v.attribute}, I am wondering if this is possible?
    – manza
    Oct 30, 2018 at 20:16
  • hmm, it should work dynamically - because this is how you specify a unique id for the component - ie id="{!GlobalId + 'some_val'}" ... so replacing that with an attribute I would have thought would work. Oct 30, 2018 at 21:06

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