I am new in programming and learning web development, when I was doing practice of Boolean data type in javascript I got a problem with this:
Code:
"
console.log(1<2<3);
console.log(3>2>1);
"
Output:
true
false
I know the answer for the first one is true, but for second one why it printed false.
>Solution :
The difference between console.log(1 < 2 < 3); and console.log(3 > 2 > 1); lies in how JavaScript handles the comparison operators.
Let’s break down each expression:
console.log(1 < 2 < 3);
In this case, the expression is evaluated from left to right.
1 < 2 is true, so it becomes true < 3.
JavaScript converts true to 1 in a numeric context, so it becomes 1 < 3.
The final result is true.
console.log(3 > 2 > 1);
Similar to the first example, this expression is also evaluated from left to right.
3 > 2 is true, so it becomes true > 1.
JavaScript converts true to 1 in a numeric context, so it becomes 1 > 1.
The final result is false.
The reason for the difference in behavior is that the < and > operators are left-associative in JavaScript, meaning they are evaluated from left to right. So, in the second example, it first evaluates 3 > 2, which is true, and then compares true > 1, which is false.
console.log((1 < 2) < 3); // true
console.log(3 > (2 > 1)); // true
Try this