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I've created rerenderer function to hide the field after component is loaded but it still doesn't work as expected.

Note: I've not added slds-hide or slds-show class in component. Just trying to hide using js when component is loaded.

rerender : function(component, helper) {

    this.superAfterRender();
    if(component.get("v.Value") === 'No'){
        $A.util.addClass(component.find("FieldToHide"),"slds-hide");
    }       
}
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I dont know your exact use case but here are few things that you can do, first use the below event 'render'

<aura:handler name="render" value="{!this}" action="{!c.onRender}"/>

There seems to be something wrong in this line below we do a component.find of an aura id and then do v.value not sure if this line is returning anything.

//if(component.find("FieldTovalidate").get("v.value") === 'No')     
if(component.get("v.Value") === 'No'){

you can put a try catch around this and log an error in browser console to see if this is erroring out

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  • Thanks @RedDevil. I tried but it's not going to catch block. I've followed solution posted here (The same use case): salesforce.stackexchange.com/questions/158237/…
    – anonymous
    Commented Apr 24, 2019 at 13:49
  • You need to use component.find of an aura id in render event helper function and then check the no condition. added it to my answer above.
    – RedDevil
    Commented Apr 24, 2019 at 13:53

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