// lastIndexOf(): Takes takes a substring and if the substring exists in a string it returns the last position of the substring if it does not exist it returns -1

let string = 'I love JavaScript. If you do not love JavaScript what else can you love.'

console.log(string.lastIndexOf('love')) // 67

console.log(string.lastIndexOf('you')) // 63

console.log(string.lastIndexOf('JavaScript')) // 38