This post explains how to display a spinner while data is being loaded in background as shown below
In order to achieve this salesforce already provided
is-loading attribute which shows loader when it is set to true but it has an UI glitch where users cant see it properly or users can see only 10% of the loader.
If you set the height of the
600px then the spinner appears either before or after
data-table depending on your position.
If you're encountering the same behavior this post is for you.
My Idea behind this post was doing things in
asynchronous way. I see many developers just throwing spinners on the page which is blocking entire page where it leaves user to wait & watch.
This post helps you to load
lightning-datatable without blocking screen or loading asynchronously which means spinner shows just for data-table
Here is the code of HTML which shows
data-table + spinner,
<lightning-datatable />is used to show data in tabular format
<lightning-spinner />is used to show spinner
- Keys items in below code are,
_tableHeightwhich is responsible for setting height of the table which we're doing dynamically using
class="slds-spinner_inline spinner-padding"which helps you getting spinner in center + without any container
In this file we will load data to
casesSpinner to show/hide spinner as follows,
casesSpinner = truewhich shows spinner at the time of page load
- Once you're ready with your
data-tabledata after assigning it then make
casesSpinner = false
- One more key item would be once
CasesSpinneris set to false then set the height of the
this._tableHeight = 'height: 500px;'I set height as
500pxbut you can set as per your need. If not height is set entire page is shown with
Not many changes here but we set the
spinner padding just to show spinner after
data-table header as shown
Try yourself & comment below with your results