Questions tagged [locker-service]
Locker Service is a set of new security features for Lightning Components.
378
questions
2
votes
1answer
37 views
LWC optional chaining “array?.length' in expression causes output of ”[object Object]"
Context: In my LWC, I have an array that may not be defined, and I want to check its length. So I use the optional chaining arr?.length to not error if the array is undefined. I also want to default ...
0
votes
1answer
36 views
How to access browser's “window” object in Aura component
I have third party JS file that I have imported in Salesforce as Static Resource
Structure of static resource:
myuploadzip.zip
----myuploadzip.JS
I have imported the same in Aura Application as below:...
0
votes
0answers
22 views
How do I use react-beautiful-dnd with a lightning web component?
I want to use the react-beautiful-dnd library in a lightning web component.
This worked in the past with aura but it does not work with lightning web components. Why would this be? Is this prevented ...
0
votes
1answer
37 views
Close custom multipicklist dropdown on click of another multipicklist
I have to build an app page with several filters that can be choosen from multiple picklists. There isn't a stantard Lightning Web Components that let me choose multiple options from a picklist ...
0
votes
0answers
18 views
Issue integrating Recurly with Salesforce using Aura/Lightning Framewrok
I'm building a payment screen using Lightning Components. For this I need to use the Recurly.JS Framework to invoke a few functions that will allow the org to integrate Salesforce with Recurly.
I have ...
0
votes
0answers
66 views
LWC JS loadScript
I am trying to load this JS script: http://cdn.tagcommander.com/3468/tc_ENGIE_iframe.js
So I downloaded it as static resource and use loadScript in LWC:
import { loadScript } from "lightning/...
0
votes
0answers
45 views
What is lwc doing to custom ES6 Proxies?
The Problem:
I am experiencing broken behavior when I pass Proxies as Event details or as public properties.
Requirement: they need to wrap a {nested: {value: "Foo"}}. I experienced this ...
2
votes
1answer
173 views
Stripe with Salesforce (using LWC)
Is it possible to integrate to Stripe using a Salesforce LWC? I am having an issue trying to submit a valid test card to Stripe. Is LockerService blocking this somehow?
I have the below LWC code, ...
0
votes
0answers
39 views
Event.target doesn't work under Locker service
controller.js
selectedValue: function(component, event, helper) {
let componentDiv = event.target;
let searchString = document.createRange();
}
component:
<aura:iteration items="{!v....
1
vote
1answer
147 views
Is it possible to using Intersection Observer javascript in LWC?
I'm trying to do some UX updates to a component and I'd like to use the Intersection Observer functionality (https://developer.mozilla.org/en-US/docs/Web/API/Intersection_Observer_API) to show/hide a ...
0
votes
1answer
90 views
Integration of tinyMce with LWC is not working
I am trying to use tinyMce Rich text editor in an application based on LWC instead of lightning-input-rich-text.
I uploaded tinymce.min.js file in static resources and is using that
in my component
...
0
votes
1answer
60 views
Lightning Locker is blocking HTMLScriptElement
I'm trying to inject a script into the lightning page by adding the JS Script into the pagebut i'm not able to see any Error or script in the page
from Locker Compatibility HTMLScriptElement element ...
1
vote
1answer
37 views
Load scripts in lightning web component with out strict mode
I'm trying to load a library into a lightning web component. The library itself has comments in it that say it shouldn't run in strict mode which I think is what's causing my issue since I can get the ...
1
vote
0answers
251 views
Failing this.template.querySelector
I have a component and am trying to retrieve an element from the template using querySelector, as follows:
const elt = this.template.querySelector('.thunder-ng');
But instead of returning the element,...
0
votes
0answers
21 views
Global marker for UI test automation in aura
What is a good way to set a "marker" for a UI test automation? Right now my application has quite a bit of background server calls that I want to wait to complete.
I am considering adding ...
0
votes
1answer
53 views
Dynamically alter CSS depending on Salesforce standard split view mode being expanded or collapsed
When I am trying to view a record detail page in split view mode I have to alter CSS on my custom component depending on whether the Split view section is expanded or collapsed. In order to accomplish ...
0
votes
0answers
34 views
Lightning button stopped working - Uncaught TypeError - aura_prod.js - TypeError: 'getOwnPropertyDescriptor' on proxy
I am getting below js error -
TypeError: 'getOwnPropertyDescriptor' on proxy: trap returned descriptor for property 'length' that is incompatible with the existing property in the proxy target
I have ...
0
votes
0answers
187 views
Closing a jquery dialog from a LWC (contained inside the dialog box) and reload the standard record page
I have a requirement where on a classic Salesforce Account page I have to show a custom button. On User click I have to show a popup where user does some interaction and from the popup itself when the ...
0
votes
1answer
30 views
WheelEvent constructor does not work in LockerService
When trying to create a WheelEvent using its constructor, I was unable to do so, despite the WheelEvent being clearly marked as supported in the Locker Api Viewer.
The issue is reproducible easily by ...
1
vote
0answers
359 views
Failed to execute 'add' on 'HTMLSelectElement': The provided value is not of type '(HTMLOptionElement or HTMLOptGroupElement)'
There is library written in vanilla js for datatable Vanilla-Datatables, I am trying to use that library to create datatables.
HTML:
<template>
<div class="container-fluid">
...
0
votes
0answers
44 views
How do I use Salesforce Locker console to evaluate a library? [duplicate]
There is a requirement of using an external Javascript library for excel file generation(xlsx). I was planning to use Sheetjs or exceljs to achieve the same, but wanted to know how to evaluate the ...
4
votes
0answers
595 views
Google Analytics Event Tracking in Community using LWC
I'd like to use Google Analytics Event Tracking inside a Community in LWC
We have Google Analytics configured in Builder > Settings > Advanced > Google Analytics
The documentation says to ...
1
vote
1answer
3k views
JavaScript Error: Uncaught (in promise) undefined - when using FullCalendar 4.4.0 in LWC component
I am trying to use FullCalendar 4.4.0 Timeline View inside a LWC component.
html
<template>
<section class="slds-card slds-p-around_medium">
<div class="calendar" lwc:dom="...
2
votes
1answer
374 views
LWC: Second async child function call fails
I would like to call an async function on a child component from its parent. This works the first time I call the function, but the second time, I get a "Sorry to interrupt" error with this:...
3
votes
1answer
1k views
Animate custom refresh lightning-button-icon LWC
I want animate a lightning-button-icon as the standard Salesforce refresh button in
LWC. I've already seen a related question but the answer was not conclusive, at this point I don't know if it's ...
2
votes
0answers
59 views
Are URLs for Salesforce files brittle?
I'm using Salesforce Files with enhanced letterheads with a URL like the following:
<img alt="Company_letterhead_header" src="https://my-domain--c.na191.content.force.com/file-asset-public/...
1
vote
0answers
130 views
How to add Custom HTML in Lightning Component Dropdown Menu? [closed]
I'm trying to create a dropdown menu with specialized internal options.
SLDS Menu - https://lightningdesignsystem.com/components/menus/
Respective Lightning Component for this is - https://...
1
vote
0answers
459 views
Can access elements with template.querySelectorAll() in Local Dev Server, but not with Locker Service running
I have written a custom LWC with some nested accordians. I have a function that expands all similarly named child accordion sections in the each of the parent accordion sections. I was able to get it ...
0
votes
1answer
529 views
How to access the contents of a SecureNodeList in Lightning Components
I am currently trying to access a SecureNodeList, but I keep running into errors. Before I go into depth more, I will explain what I am trying to do first, before I end up with an X-Y Problem.
My aim ...
0
votes
1answer
288 views
Locker Service Blocking Access to Third-Party Object
I'm running into a scenario where I can't tell if Locker is preventing accessing an API call from a third-party script that's been whitelisted.
I'm using Qualtrics survey tool to poll users on our ...
3
votes
1answer
51 views
LockerService Range.commonAncestor readonly field returns a function instead of a Node (or SecureElement)
I've found a strange behavior with LockerService and I do not understand the current behavior.
I want to use Range.commonAncestorContainer but when I try to use this getter, I get a function instead ...
2
votes
1answer
1k views
LWC: Using lwc:dom=“manual” to reach and interact with a certain DOM element
I am trying to find a way to interact with the built-in chat widget. I need to simulate a click on it.
I understand that the Locker Service is there to prevent any interaction outside of the DOM of ...
0
votes
0answers
217 views
Script in ltng:require Blocked by Locker Service
I added a JavaScript file to a Static Resource and I'm using ltng:require to reference it in a Lightning component.
<ltng:require scripts="{!$Resource.MyCommunity + '/js/myscript.js'}" ...
1
vote
1answer
1k views
Handsontable 3rd party library not working in LWC
Handsontable is a neat looking spreadsheet plugin for Javascript. I can't get even the quick start to display in an LWC component. It seems to initialize but the data never shows up. As far as I ...
11
votes
3answers
5k views
Modern JavaScript Frameworks (Angular Js, React JS ) within LWC
As documented on the below link,
https://developer.salesforce.com/docs/component-library/documentation/lwc/lwc.get_started_supported_javascript
Lightning Web Components Javascript support includes :...
0
votes
1answer
561 views
Is it possible to call an intranet or local server using a lightning component?
For example, if a local server outputs a JSON with sensitive information, and I can access it through my local network, can I access this data using a lightning component?
3
votes
1answer
2k views
Is it possible to disable Locker Service for Lightning Web Components? (I mean LWC and not Aura Components!)
Is it possible to disable Locker Service for Lightning Web Components? For Aura Components it goes like this:
https://developer.salesforce.com/docs/atlas.en-us.lightning.meta/lightning/...
3
votes
0answers
677 views
AuraError: Error at new Aura.externalLibraries
Background
I am using this approach Call REST API from Lightning Components without Named Credentials to call the Salesforce REST API from a Lightning component.
It works when I call this URL:
/...
0
votes
1answer
951 views
jQuery/DataTable methods in Lightning Web Component - (…).DataTable is not a function
I'm trying to write a Lightning Web Component which uses jquery and datatable static resources and getting an annoying error message without any idea how to solve it.
My html code is:
<div class="...
0
votes
1answer
232 views
Lightning data locker restricting Javascript for CSS/HTML
I am trying to retrieve JavaScript Static resource in Community lightning component to override the numbering from Unescaped html. But the data locker service is blocking the script.
Am trying to ...
1
vote
1answer
600 views
LockerService seems to be blocking adding new properties to JS objects in LWC [duplicate]
I am facing issue with LWC, probably connected to the LockerService's Proxy objects.
My code
I am getting the list of custom objects defined in one of my Apex classes by calling Apex method from LWC ...
0
votes
2answers
630 views
Locker Service and 3rd party library, how to pass Security review?
Is it a way to use 3rd party library/framework like Vue/Angular and bypass security review by Salesforce. Because only option to use those kind of library seems possible with version 39.0 which is ...
5
votes
5answers
2k views
FullCalendar V4 is not working in lightning component
I am trying to show calendar view using fullcalender.io v4 in lightning component.
Initially the fullcalender loads without any issue but when I hover over the calender UI, I'm getting the below ...
2
votes
1answer
896 views
jsPDF and Salesforce Lightning Web Component
I'm trying to create a Salesforce Lightning Web Component to create a custom Quote PDF using jsPDF. I mastered to use the external chart.js library with uploading it as a static resource, but when I ...
1
vote
1answer
107 views
Iframe allow tag not supported in lightning component?
I tried adding the allow="microphone" tag in iframe that I added in salesforce lightning component, but when I load the page it throws a Uncaught AuraFriendlyError. Is it not supported, also if not is ...
2
votes
0answers
241 views
LockerService Error while using Range.setStart
Why does LockerService Error while using Range.setStart?
Getting the error "Failed to execute 'setStart' on 'Range': parameter 1 is not of type 'Node'.
This is when using popper.js dependency in a ...
1
vote
0answers
162 views
SVG API incomplete in LWC/Locker
I want to create a custom component that wraps the yFiles for HTML graph drawing component in an LWC component, but it seems some of the SVG API is not implemented or rather hidden behind the locker ...
0
votes
1answer
213 views
Uncaught SecureElement.innerHTML cannot be used with BODY elements! when using dhtmlxGantt in Lightning Component
I am trying to use dhtmlxGantt inside a Lightning Component.
CMP
<aura:component implements="flexipage:availableForAllPageTypes">
<ltng:require styles="{!$Resource.dhtmlxgantt_css }" /&...
2
votes
1answer
4k views
Blocked by CORS policy: No 'Access-Control-Allow-Origin' header on the requested resource
I am trying to use a Google Charting library inside a Lightning Aura Component.
Component
<aura:component implements="flexipage:availableForAllPageTypes">
<ltng:require scripts="{!$...
1
vote
1answer
126 views
invoking .click() function in lightning component
Client needs demand that we don't use the default SLDS style for the file uploads.
Basically, have a specific icon we have to use for uploads which isn't the SF one.
In prior releases, we were able ...
