How to redirect your site collection from one site collection to another

If you would like to redirect your site collection from https://abc.sharepoint.com to https://xyz.sharepoint.com

1. Go to A site collection

2. Edit Page

3. Insert > Web Part

4. Under Media and Content > click on Script Editor > Add

5. Select Script Editor Web Part > click on Web Part Tab > Web Part Properties

6. In web part > click on Edit Snippet

7. Paste the below script

<script '"text/javascript"'>//<![CDATA[alert("This site has been moved to New site. Please check it out . You will be redirected within 5 second.");//]]></script> 

<meta http-equiv="refresh" content="5;url=https://xyz.sharepoint.com">