compare strings js

1const s1 = 'learn';
2const s2 = 'today';
3
4console.log(s1 === 'learn');  // true
5console.log(s1 === s2);       // false

1console.log(NaN===NaN);//false

1console.log("10" == "10"); //True
2console.log(parseInt(10) == 10); // True Best practice