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This tag is for questions related to JavaScript, CSS, or Markup when used in the Lightning Web Component (LWC) programming model, or for questions of interoperability between LWC and the original Aura-based lightning components.

0
votes
1answer
I have a @wire function which calls an apex method which should return some list of contacts. However I get the following error on page load: Uncaught (in promise) TypeError: Cannot read property 'ke …
asked May 25 '20 by Luke Bray
0
votes
1answer
Sorry for the bad title, I am not sure the right way to ask this as I am fairly new to LWC and JS. I have a component which looks like below: <template> <lightning-card> <div> …
asked May 21 '20 by Luke Bray
2
votes
2answers
Let's say I have a really basic script as a static resource in my org: helloWorld.js function helloWorld() { alert("Hello World!"); } and I import it to my component as per below: myComponent.js …
asked Aug 23 '20 by Luke Bray
0
votes
1answer
I have lightning playground where I have an array and for each item in the array a simple component with a remove button displays. When you click the remove button the component should no longer displ …
asked Jun 23 '20 by Luke Bray
0
votes
1answer
Sorry I wasn't sure how to phrase the title of this question. I have a parent component which populates an array cartItems populated with objects. For each object in the cartItems array a new cartRowI …
asked Aug 21 '20 by Luke Bray
3
votes
1answer
I am trying to build a cart where I add products to it and can then remove them. However on remove I receive the error ['set' on proxy: trap returned falsish for property '0']. In my component Parent …
asked Aug 18 '20 by Luke Bray
3
votes
1answer
I am using @wire and getListUi to get a list view of accounts. I have a lightning-datatable where, for now, I just want to display the name of each account. Relevant part of the template: <templat …
asked May 22 '20 by Luke Bray
0
votes
1answer
I have a lookup field called Requested_By__c which looks up to User. It is on a custom object called Sample__c. In my LWC (sampleHelpInfo) I am using @wire to get the sample record and the ID of the u …
asked Nov 17 '20 by Luke Bray
0
votes
I ended up just creating a formula field on my Sample object rather than using the LWC controller to look to the user.
answered Nov 18 '20 by Luke Bray
1
vote
You can use a tool like this which will tell you if your CSS is compatible with each browser and the reason why it is not.
answered Aug 24 '20 by Luke Bray