Salesforce4U

1. First import  ShowToastEvent   import  {  ShowToastEvent  }  from   'lightning/platformShowToastEvent' ; 2. Add below method. showSuccess(){         this.dispatchEvent(new ShowToastEvent({           title: 'Success',           message: 'Lead has been Cloned',           variant: 'success',         }));     } 3. Call this.showSuccess(); where we want to show success message. 4. Error message showError(msg){         const evt = new ShowToastEvent({             title: 'Eligibility Error',          ...