logical AND operand

logical and operand

left to right

if all are true-> it shows right most

if which one is false -> which one is false that one will write

5 && true && '123' -> all are true values -> from left to right -> give right value 123

In JavaScript, the logical AND operator (&&) evaluates expressions from left to right and returns the value of the first falsy operand or the value of the last operand if all operands are truthy.

In the expression 5 && true && '123', all three operands are truthy values. The number 5 is considered truthy, the boolean value true is truthy, and the non-empty string '123' is also truthy.

Therefore, when evaluating this expression, JavaScript will return the last truthy operand, which is '123'.

So the result of the expression 5 && true && '123' is '123'.

Regarding your second question, "y" seems to be unrelated to the expression provided. If you meant to ask about the value of variable "y" in the context of this expression, it would depend on how the variable "y" is defined and used in your code.

treu && false && true -> false

true && 123 && 'Hello' -> hello

0 && 'Hello' && true-> 0

null && 'Hello' && 42 -> null

'OpenAI' && true && 10 && 'GPT-3' -> GPT-3

Certainly! Here are a few more examples of logical AND (&&) expressions in JavaScript:

Example 1:

arduino
true && false && true

In this case, the second operand is false, which is a falsy value. Therefore, the expression will return false, as the first falsy operand encountered is false.

Example 2:

arduino
true && 123 && 'Hello'

All three operands in this expression are truthy values. The expression will return the last truthy operand, which is the string 'Hello'.

Example 3:

arduino
0 && 'Hello' && true

In this case, the first operand is 0, which is a falsy value. Since a falsy value is encountered as the first operand, the expression will return 0 without evaluating the subsequent operands.

Example 4:

csharp
null && 'Hello' && 42

The first operand is null, which is a falsy value. Similar to the previous example, the expression will return null without evaluating the remaining operands.

Example 5:

arduino
'OpenAI' && true && 10 && 'GPT-3'

All four operands are truthy values. The expression will return the last truthy operand, which is the string 'GPT-3'.

In each of these examples, the logical AND operator (&&) behaves in a similar way, evaluating operands from left to right and returning the first falsy operand or the value of the last operand if all operands are truthy.