I'm working on a toggle switch for a lightning:input password field that will allow users to view the password they've entered.

<lightning:input type="password" aura:id="passwordInput" name="password" label="password" />

<button type="button" id="btnPreviewToggle" onclick="{!c.togglePassword}">show</button>

In regular JavaScript I can do this by changing the type of the input from "password" to "text". However, in my Controller, the same kind of logic doesn't work:

togglePassword : function(component, event, helper) {
    var pwdInput = component.find("passwordInput");

    if (pwdInput.type === "password") {
        pwdInput.type = "text";
    } else {
        pwdInput.type = "password";

How can I change the type value of lightning:input?


Seems like you cannot use type here to toggle this. While trying to do so, I encountered an error which said as it is not extensible as below:

Cannot add property type, object is not extensible

A way to do this could be as below (you may need to modify it per your need, this was just a quick test). Define a boolean variable and another text type input and toggle between those on click of the button. Something as below:


<aura:attribute name="showDiv" type="Boolean" default="false" />

<aura:if isTrue="{!v.showDiv == false}">
    <lightning:input type="password" aura:id="passwordInput" name="password" label="password" />
<aura:if isTrue="{!v.showDiv == true}">
    <lightning:input type="text" aura:id="passwordText" name="passwordTxt" label="passwordTxt" />

<lightning:button variant="base" label="Show Password" title="Show Password" onclick="{! c.togglePassword }"/>

JS Controller:

togglePassword : function(component, event, helper) {
    var bool = component.get("v.showDiv");
    var val = component.find("passwordInput").get("v.value");
    if(bool) {
        component.set("v.showDiv", false);
    } else {
        component.set("v.showDiv", true);
        component.find("passwordText").set("v.value", val);
  • This looks great, thank you! How would you then change the toggle back, i.e., after showing the password, back to hiding it?
    – Matt Smith
    Aug 23 '18 at 0:36
  • I haven’t really tried it out completely but having a reverse implementation to do the same should help. You show say another button altogether and then on click of that show the hidden components back, something similar to this.
    – Jayant Das
    Aug 23 '18 at 0:45

How about something like:

<aura:attribute name="inputType" type="String" default="password"/>
<!-- <aura:attribute name="inputType" type="String" default="text"/> -->
<lightning:input type="{!v.inputType}" aura:id="passwordInput" name="passwordInput" label="{!v.inputType}" value="myPassw0rd"/>

and you toggle the value of inputType attribute from your toggle method?

  • 1
    Seems you cannot toggle the type attribute.
    – Jayant Das
    Aug 17 '18 at 17:35

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