JSFiddle - React, Tailwind, and code Playground

JavaScript

isISO = "2018-08-01T18:30:00.000Z"


    if(new Date(isISO) !== "Invalid Date" && !isNaN(new Date(isISO)) ) {
    if(isISO==new Date(isISO).toISOString()){
    console.log("Valid date");
    } else {
        console.log("Invalid date");
        }
        
    }
    else {
        console.log("Invalid date");
    }