void

const output = void 1;
console.log(output);
// Expected output: undefined

void console.log("expression evaluated");
// Expected output: "expression evaluated"

void (function iife() {
  console.log("iife is executed");
})();
// Expected output: "iife is executed"

void function test() {
  console.log("test function executed");
};
try {
  test();
} catch (e) {
  console.log("test function is not defined");
  // Expected output: "test function is not defined"
}

void expression;

void 2 == "2"; // undefined == '2', false
void (2 == "2"); // void true, undefined

void (function iife() {
  var bar = function () {};
  var baz = function () {};
  var foo = function () {
    bar();
    baz();
  };
  var biz = function () {};

  foo();
  biz();
})();

<a href="javascript:void(0);">   </a>
<a href="javascript:void(document.body.style.backgroundColor='green');">
    
</a>

button.onclick = () => void doSomething();