How Does JavaScript's Logical AND (&&) Operator Work in Assignments?

JavaScript Logical AND (&&) Operator in Assignment

In JavaScript, the && operator (logical AND) within an assignment evaluates the left operand and assigns the right operand only if the left operand is true.

Assignment with Non-Falsy Left Operand:

When the left operand is not null, undefined, false, NaN, an empty string, or 0, the && operator assigns the right operand to the variable.

var oneOrTheOther = true && "some string";
// Result: "some string" is assigned to oneOrTheOther

Assignment with Falsy Left Operand:

When the left operand is any of the falsy values mentioned above, the && operator propagates the falsy value to the variable.

var oneOrTheOther = false && "some string";
// Result: false is assigned to oneOrTheOther

In summary:

• The && operator assigns the right operand to the variable if the left operand is truthy.
• The && operator assigns the left operand to the variable if the left operand is false (by itself) or falsy (coercions to false).

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