Salesforce Classic: Assign a record to yourself

Let's consider a use case where you want to assign a record (in this case, Workorder) to yourself. To implement this scenario, click on New Button or Link button. Enter the details as below:

and provide the below script:

{!REQUIRESCRIPT("/soap/ajax/49.0/connection.js")}
{!REQUIRESCRIPT("/soap/ajax/49.0/apex.js")}

var __sfdcSessionId = '{!GETSESSIONID()}';
sforce.connection.sessionId = __sfdcSessionId;

var workOrder = new sforce.SObject("WorkOrder");
workOrder.Id = "{!WorkOrder.Id}";
workOrder.OwnerId = sforce.connection.getUserInfo().userId;
result = sforce.connection.update([workOrder]);
 
if (result[0].getBoolean("success")) {
    console.log(result[0].id + " updated");
} else {
    console.log("failed to update " + result[0]);
}
window.location.reload();

Now add this button on the page layout.