Questions tagged [locker-service]
Locker Service is a set of new security features for Lightning Components.
356
questions
0
votes
0answers
10 views
Lightning Locker Service is not allowing to use Web3.js library in lightning components
I have a requirement to use web3.js library in my lightning component but lightning locker service is not allowing to use that library and i am getting following error:
"Custom Script Eval error in '...
2
votes
0answers
39 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
31 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
25 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
73 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
121 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
74 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 ...
2
votes
0answers
41 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 ...
1
vote
0answers
314 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
84 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
438 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 ...
5
votes
2answers
1k 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
219 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
513 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
266 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
494 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
129 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
247 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
172 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 ...
4
votes
3answers
802 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
0answers
548 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
61 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 ...
1
vote
0answers
172 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
133 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
95 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 }" /&...
1
vote
1answer
1k 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
44 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 ...
2
votes
1answer
328 views
How can you get the caret position when working from an event?
Looking at the Locker documentation they list selectionStart as being a valid attribute, but I can't find a way to access it.
I am trying to write an input masking utility, and everything works fine ...
3
votes
0answers
107 views
Using postMessage across different namespaced components
In Salesforce, postMessage is mainly used for communicating in between Visualforce and Lightning components
Communicating between Lightning Components and Visualforce Pages
Window.postMessage()
...
1
vote
2answers
963 views
access Target Element in Proxy
i have the following line:
var childCmp = cmp.find("lookupCmp");
My Lightning component API Version is 44.0
lookupCmp is a custom lightning component.
When i run this line i get:
childCmp = ...
3
votes
1answer
64 views
Why ECMAscript 6 Object.freeze not working with Locker Service?
We have a library we created using ECMACScript 6 that we transpiled using babel that worked perfectly with a VisualForce page. Migrating this library to work with Locker Service I found that Object....
0
votes
2answers
475 views
Alternative for javascript window method for visualforce pages in lightning
With the lightning readiness report there is mention that javascript window method won't perform as supposed to in Lightning. Salesforce documentation suggest sforce.one navigation methods to replace ...
6
votes
1answer
1k views
Locker service and lightning web components
Is there any documentation yet on how locker service fits in with lightning web components? If yes,
What are the implications of locker service on lightning web components?
What are locker service ...
3
votes
0answers
175 views
Is it possible to disable mobile touch on a Salesforce community
Background
I have a community page which displays a calendar by FullCalendar
The calendar is in a Lightning Component.
Both Salesforce Communities and FullCalendar support mobile devices.
...
0
votes
1answer
53 views
Locker Service and CSS in JS
Without trying this myself I was curious if anyone else was able to get CSS in JS to work within the confines of LockerService. At first glance it looks like styled-components might actually work as ...
1
vote
1answer
170 views
Only 1 of 3 JavaScript files load when using <ltng:require> and afterScriptsLoaded event not firing
Background
I am trying to use the PageDown JavaScript library:
Markdown.Converter.js - (click to view source)
Markdown.Editor.js - (click to view source)
Markdown.Sanitizer.js - (click to view ...
4
votes
2answers
612 views
Stripe integration for Salesforce in lightning components
We are trying to implement Stripe integration with Salesforce by using Lightning Components for payments.
Stripe use an API for securely obtain the users card information. This API is for the client,...
1
vote
1answer
108 views
Multi thread in lightning component script
im looking for some method to divide thread in my lightning component JS.
As far as I know is JS running on single thread.
but web.Worker function can be alternative.
i tried to use web.worker .. ...
0
votes
1answer
49 views
loop through components looking for data in it
im building a list that people select only a single item which works in a limited capacity but reloading or re-selecting isnt very user friendly. the basic concept is a controller retrieves selections,...
5
votes
2answers
236 views
accessing a lighning inputField lookup name client side
I am easily able to fetch a lookup ID from a inputField
<lightning:recordEditForm
objectApiName="Case">
<!-- the messages component is for error messages -->
<...
11
votes
3answers
1k views
Lightning support for eval() in Summer 18
I thought that eval() was supported in Lightning in Summer 18. According to the release notes, it is:
The eval() function is now available in Locker Service, even when
Strict CSP is enabled. This ...
2
votes
1answer
384 views
Library import not working
I am trying to import a library into Salesforce Lightning using ltng:require. Problem is, when I try to use some of the objects from the library in my controller, it can't find those objects. I have a ...
1
vote
1answer
124 views
Cannot read property 'Converter' of undefined, when using StackExchange PageDown Library in Lightning Component
BACKGROUND
I am trying to use the PageDown JavaScript library:
Markdown.Converter.js - (click to view source)
Markdown.Editor.js - (click to view source)
Markdown.Sanitizer.js - (click to view ...
0
votes
1answer
67 views
Using princexml and PDFreactor in Lightning component with version 43.0
I want to know if Salesforce allows princexml or PDFreactor js library to work if locker service is enabled. This files are used to convert html to PDF
1
vote
1answer
304 views
jsPDF library does not work in Lightning components 43.0 version
I have stored jsPDF library in static resource and using it in lightning component where version is 43.0. This library does not work if LockerService is enabled.I decreased version to 39.0 and then it ...
1
vote
1answer
145 views
How to show the difference with and without locker service using lightning components?
I created one component before activation of the locker service. After that i created another component after activation of the locker service. But my doubt is how to know, what is the difference ...
1
vote
1answer
74 views
Why different orgs behave differently with supposedly same config for Locker Service
So, reading documentation regarding locker-service I get that the only way of disable it, is downgrading the api version of each component to 39 or less. Also, documentation says that there is no ...
0
votes
0answers
430 views
HTTP Form Post to external website from Lightning Component
I am working with a client to develop a managed package. Here is the requirement in brief:
User clicks a button in a lightning component which is added to Contact detail page.
The button click ...
4
votes
1answer
289 views
Generating a PDF from a Lightning Page with LockerService restrictions
I'm trying to generate a PDF from a Lightning Page using jsPDF.
When I use the addHTML function in jsPDF I get an error (but only if locker service is enabled). The problem is in the use of ...
1
vote
0answers
233 views
Lightning Component CSP - Meta tag http-equiv for TinyMCE
I have a lightning sub component within a larger component that uses TinyMCE js library locally to provide advanced editing capabilities. The component works when I disable LockerService, by setting ...
