Hi Ratnesh,

We can add content in 2 ways.

<b id="ext-gen26">Chatter files
You can upload a file and store it privately until you're ready to share it. Share the file with coworkers and groups to collaborate and get feedback. Attach files to posts in a Chatter feed on the Home tab, Chatter tab, a profile, a record, or a group. Users with access…

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Hi Aditya,

Try this code. Hope it helps!

@isTest
public class SampleTest
{
	public static testMethod void LoginFail()
	{
		Sample  tp=new Sample ();
		tp.loginPage();
	}
	public static testMethod void loginPass()
	{
		Account acc = new Account();
		acc.Name ='mecrin';
		acc.sic = '12345';
		insert acc;
		
		Sample  tp=new Sample…

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Hi Shweta,

By creating Apex Controller, we can integrate Youtube search engine in VF page.

Try using the code mentioned in the below link.

https://developer.salesforce.com/forums/?id=906F0000000AVJGIA4

I hope this helps!

Hi Pooja,

By using <aura:if> we can display content conditionally.

simple example that shows an error message when an error occurs.

<aura:if isTrue="{!v.isError}">
    <div>{!v.errorMessage}</div>
</aura:if>

Hi Pooja,

lightning:spinner displays an animated spinner image to indicate that a request is loading.

Here is the explanation and example code for creating loading spinner in Lightning component.

https://www.sfdcpoint.com/salesforce/loading-spinner-in-lightning-component/

Hope this helps!