My lightning component (V40/SU17) errors out when accessed via MS Edge with LockerService enabled. Is there a different method of accessing the window.location?


<aura:component implements="forceCommunity:availableForAllPageTypes" access="global" >
    <aura:attribute name="url" type="String" />
    <aura:handler name="init" value="{!this}" action="{!c.doInit}" />


    doInit : function(component, event, helper) {
        component.set("v.url", window.location.href);


<aura:application >
    <c:WindowLocation />

Here's the error when viewed in MS Edge

enter image description here

This page has an error. You might just need to refresh it. Action failed: c:WindowLocation$controller$doInit [WeakMap.prototype.set: 'key' is not an object] Failing descriptor: {c:WindowLocation$controller$doInit}

  • I am facing the same problem. When I load jquery2.2.4 in to lightning component and try to open a component page, I got this error from the jquery library, since in the library they are using windows.location. Do you have a work around for this problem?
    – bluecat
    Jul 24 '17 at 21:54

Just verified that this is the behavior we see too. It appears to be a bug in MS Edge. See related discussion and link to MS Edge bug. https://github.com/emberjs/ember.js/issues/15249 https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/12112572/

  • I'll remove my answer, since it's incorrect. Thanks for the info!
    – sfdcfox
    Jun 1 '17 at 20:24
  • 1
    What did you think it was originally, @sfdcfox?
    – Jan Julian
    Jun 2 '17 at 20:05
  • @jmrjulian I thought it was a bug with LS. This answer says it's a browser bug, which makes sense.
    – sfdcfox
    Jun 2 '17 at 21:33
  • Does anybody know any temporary workaround or any alternative way for this?
    – Sarang
    Sep 7 '17 at 12:32
  • ^ bump. Could it be an issue with how redirects are implemented such that a workaround is linking to a URL in a different way? Sep 11 '17 at 17:16

Instead of using window.location.href , you can just define an attribute in your component

    <aura:component implements="forceCommunity:availableForAllPageTypes" access="global" > <aura:attribute name="url" type="String" /> <aura:handler name="init" value="{!this}" action="{!c.doInit}" /> <p>{!v.url}</p>
<aura:attribute name ="url" type="String"/>


And also add an attribute to push URL variable from your lightning app and set in your component.

    <aura:application >
<aura:attribute name ="url" type="String"/>
 <c:WindowLocation  url="{!v.url}/>

*I've used this approach to get URL parameters and instead of splitting URL from getting it using location.href. while in your case you can try to get URL using $A.get('$Resource.SLDSv2') *


If you use window.location or location.href or anything to do with the window location object, there is a good chance Lightning will throw this error back at you - [WeakMap.prototype.set: 'key' is not an object].

If you wish to fetch the URL, use document.URL.

If you wish to set the URL (redirect), use document.location = https://your-url.com.

These 2 solutions for getting and fetching the URL should work in all browsers, so you do not need to do any browser / feature detection and write separate code for separate browsers.


Use "window.document.URL" instead of "window.location". That was the only way I could solve a similar problem.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.