04 Comparisons

Learnt about how to compare data types & what's the best practice of the comparison.

01_Basics/04_comparisons.js

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+// 4. Comparisons
+
+// (i) Comparisons with same Data Types,
+// console.log(2 > 1); // Output : true
+// console.log(2 >= 1); // Output : true
+// console.log(2 < 1); // Output : false
+// console.log(2 == 1); // Output : false
+// console.log(2 != 1); // Output : true
+
+/* Note : Whenever we compare value then we should keep in mind that both value should
+have same Data Types. */
+
+// ----------------------------------------------------------------------------------------------
+
+// (ii) Comparisons on different data types,
+// console.log("2" > 1); // Output : true
+// console.log("02" > 1); // Output : true
+
+/* Note : These comparisons some times do not give predictible outcomes, that's why we should
+compare same Data Types values. */
+
+// console.log(null > 0); // Output : false, (0 > 0)
+// console.log(null == 0); // Output : false
+// console.log(null >= 0); // Output : true (0 >= 0)
+
+/* Note : Comparisons (<,>,<=,>=) and Equality check (==) works diffrently,
+Comparisons convert null into a number, treating it as 0. */
+
+// console.log(undefined == 0);
+// console.log(undefined < 0);
+// console.log(undefined > 0);
+// In all the cases it will give false.
+
+/* **************************************Strict Check********************************************
+
+(===) Triple Equal : Checks values as well as their Data Types. */
+
+console.log("2" === 1); // Output : false
+
+
+