Javascript Void

In JavaScript, The void operator is used to evaluate an expression and then return `undefined`.

It is often used to create a self-invoking function that doesn't return any meaningful value.

The syntax of the void operator is:

void expression;

The expression can be any valid JavaScript expression.

Example:

// Using void to make an expression return undefined
var result = void 0; // result is undefined

// Using void to create a self-invoking function
void function () {
    console.log("This is a self-invoking function.");
}();

// Another way to create a self-invoking function using parentheses
(function () {
    console.log("Another self-invoking function.");
})();

the `void` operator is used to explicitly make an expression return `undefined`.

It is often used in situations where we want to ensure that a particular expression doesn't return any meaningful value.

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