what is referential equality in javascirpt code example

Example 1: javascript equality

18 === 18 // true
18 === 19 // false
`18` == 18 // true
`18` === 18 // false

// == : loose equality operator (date type IS NOT relevant)
// === : strict equality operator (date type IS relevant)

// Note: the same applies for not equal
`18` != 18 // false
`18` !== 18 // true

Example 2: js ===

5 =='5' // true: ignores type
5 === '5' // false: includes type