JSFiddle - React, Tailwind, and code Playground
JavaScript
var string = 'Peggy Sue - Teacher'
var new1 = string.indexOf('-') !== -1 ? string.split('-')[0].trim() : string
var new2 = string.indexOf('-') !== -1 ? string.split('-')[1].trim() : string
console.log(new1);
console.log(new2);