Questions tagged [locker-service]
Locker Service is a set of new security features for Lightning Components.
394
questions
1
vote
1
answer
67
views
Using External Custom Web Component in LWC
I wanted to know if it's possible to integrate an external standard web component in LWC. Like suppose I have mycomponent.min.js which exposes my-custom-component. And I want to use it in html as <...
- 11
0
votes
1
answer
46
views
What is the LWS distorted behavior of Document.prototype.execCommand?
According to Salesforce's documentation, the distorted behavior of Document.prototype.execCommand is described as:
When an HTML document has been switched to designMode, its document object exposes ...
- 4,897
3
votes
1
answer
261
views
In uncompiled code, async await syntax is not supported by Lightning Web Security
Looking at how the new Lightning Web Security (LWS) will affect our Lightning components. I ran the ESLint rules and one recurring error I keep seeing is:
In uncompiled code, async await syntax is ...
- 4,897
0
votes
0
answers
95
views
LWC with external js lib not loading when use LWS security checkbox is checked
We have DHTMLX Gantt library loaded in a LWC and deployed to multiple orgs, and we are facing this issue where if we uncheck the "use LWC Lightning Web Security for Lightning web components and ...
- 13
0
votes
1
answer
180
views
LWC Error: createClient is not defined when using Supabase JavaScript library
I am trying to use the Supabase JavaScript library in an LWC
Documentation
initializing supabase
Supabase JavaScript library:
supabase-js@2
Their example from the documentation:
import { ...
- 9,027
0
votes
1
answer
123
views
Passing array to lightning-modal is being flattened
I am trying pass in a simple array to a base lightning-modal component.
import MyModal from 'c/myModal'; //This is extending LightningModal from 'lightning/modal'
options = ['a','b','c'];
async ...
- 2,366
1
vote
1
answer
211
views
2023 - Lightning Web Components and Angular
We have a 2GP that has a Lightning Component (Aura/Canvas) that displays our content inside of iframes. Our platform makes heavy use of Angular 15 and many Angular components like Angular Materials, ...
- 511
2
votes
1
answer
647
views
Is there a decent WYSIWG HTML editor that will run inside an LWC?
We have some requirements pushing us towards a better HTML editor than the default rich text field editor.
The first one I found Googling is from Froala but a few years ago it didn't work inside an ...
- 134k
0
votes
2
answers
221
views
Unable to access DOM elements in Lightning Component
I have a lightning component that displays a modal when a button is clicked. Based on the ID stored in the dataset of the clicked element when the modal is loaded the action should look for a div that ...
- 1
2
votes
1
answer
379
views
Is it possible to disable Locker Service for LWC
I'm developing lwc and I'm using api version 56.0 and would like to use indexedDB for offline cashing.
It looks like it's currently not supported.
Is it possible to disable locker service for specific ...
0
votes
1
answer
169
views
Locker Service SecureWindow returning undefined nodes in Selection API
I'm building an LWC with a dependency on the Selection API.
Nodes referenced in Selection or Ranges (i.e. window.getSelection()) behave as expected except where a node in the range or selection is a ...
2
votes
0
answers
156
views
Salesforce Lightning Locker Service / Aura Component Range Inconsistencies
In my Salesforce Lightning Locker Service / Aura Component application there seems to be 2 representations for range objects:
Type 1.
prints to console as Proxy {}
does not implement range....
- 81
1
vote
1
answer
160
views
Salesforce Lightning Component Range Object compatibility issues
I'm experiencing Lightning Web Components Range proxy behavior that is not expected, on API 55.
Creating a new Javascript Range object in a Locker Component:
// <div class="container" lwc:...
- 81
0
votes
0
answers
333
views
Any way to embed Google Charts in LWC or any charts to present percentage in addition to absolute value?
I would like to present a chart in my LWC with both absolute value and percentage.
This can be easily achieved if data is exported to Google Docs and then Google Chart is created from the data.
There ...
- 15.8k
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0
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247
views
Unable to load DHTMLX Spreadsheet JS into LWC
Background
I am trying to use DHTMLX Spreadsheet in an LWC
I've added the JS and CSS as Static Resources:
DHTMLX_Spreadsheet_JS
DHTMLX_Spreadsheet_CSS
And I have enabled Use Lightning Web Security ...
- 9,027
3
votes
1
answer
3k
views
How do I import and use js static resources in LWC?
I'm trying to use a static resource in a Lightning Web Component. The component is embedded in a Sites (formerly known as Communities) Page, in case that matters
The relevant code in the static ...
- 297
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votes
1
answer
910
views
Unable to load Editor.js into LWC
I am trying to use Editor.js within an LWC
Editor.JS source file.
I've added the 3rd party library as a Static Resource
And the LWC JS file is:
import { LightningElement } from "lwc";
import ...
- 9,027
2
votes
1
answer
465
views
Salesforce Community: Send event from window to LWC
I'm working on the LWC that sends an event to Google Tag Manager via window.dataLayer.push().
I have the Lightning Locker service enabled, so I cannot access the window property fully.
I can push to ...
- 143
1
vote
0
answers
732
views
jspdf not opening generated PDF(datauristring) in new tab in aura component
I am trying to generate pdf and open it in a new tab using an aura component. Doing this with API version 50 gives me an error (due to locker service probably)
Uncaught SecureWindow.open supports http:...
- 315
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votes
0
answers
190
views
LWC SecureWindow's window.scrollX and window.scrollY returning 0 regardless of scroll amount?
I'm noticing that window.scrollX and window.scrollY are returning 0 from the Locker Service's SecureWindow wrapper regardless of how far the window is scrolled in either direction.
Not only does it ...
- 21
6
votes
0
answers
860
views
How to disable lightning locker service by default in community
I have an lwc component to display charts using chartjs library in the community.
The component was working perfectly in internal salesforce but the chartjs library failed to load in the community.
By ...
- 3,559
5
votes
2
answers
2k
views
LWC - Iterating over arrays passed into the component by a parent is ridiculously slow
Imagine we have a parent component where we create an array like so:
@track stuff = [];
connectedCallback() {
let newArray = [];
for (let s = 0; s < 10000; s++) {
newArray....
- 1,870
6
votes
1
answer
587
views
How do I use Privileged Script in Summer 21?
Salesforce mentions a new feature, Privileged Script, as part of Summer 21:
With Privileged Script, third-party JavaScript libraries can access
components in LWR sites. An LWR site encapsulates all ...
- 2,112
3
votes
1
answer
2k
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 ...
- 1,359
0
votes
1
answer
1k
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:...
- 13
0
votes
0
answers
104
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 ...
- 181
0
votes
1
answer
214
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 ...
- 95
1
vote
0
answers
3k
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/...
- 71
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votes
0
answers
222
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 ...
- 6,329
2
votes
1
answer
1k
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, ...
- 41
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votes
0
answers
51
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....
5
votes
1
answer
1k
views
Is it possible to use the Intersection Observer JavaScript API 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 ...
- 3,092
1
vote
1
answer
739
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
...
- 133
-1
votes
1
answer
291
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
1
answer
246
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 ...
- 1,439
1
vote
0
answers
2k
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,...
- 305
0
votes
0
answers
36
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 ...
- 4,204
0
votes
1
answer
173
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
1
answer
36
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 ...
- 438
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vote
0
answers
1k
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">
...
- 8,301
5
votes
1
answer
3k
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 ...
- 9,027
3
votes
1
answer
1k
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:...
- 3,782
4
votes
1
answer
5k
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 ...
- 91
2
votes
0
answers
106
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/...
- 682
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0
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338
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://...
- 5,828
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0
answers
1k
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
1
answer
2k
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 ...
- 355
0
votes
1
answer
708
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 ...
- 741
3
votes
1
answer
56
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 ...
- 438
2
votes
1
answer
5k
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 ...
- 4,773