Js匿名异步函数

回答下Stack Overflow的问题吧, 参考: https://developer.mozilla.org/en-US/docs/Glossary/IIFE

two way, we just can short a little :)

1. simple way

!async function () {
	console.log("e",'yibu');
}();

or

(async  () => {
	console.log("e",'yibu');
})();

//maybe this is better then above
;(async function () {
	console.log("e",'yibu');
}());

//this is allmost same
;[ async function () {
	console.log("e",'yibu');
}()];

1. use [then] this is not absolute “anonymous”

var x=async  () => 100;
x().then(
    e=>console.log({e})
);

匿名函数有这些写法:

!function(){}();  // => true
~function(){}(); // => -1
+function(){}(); // => NaN
-function(){}();  // => NaN


~(function(){})();
void function(){}();
true && function(){ /* code */ }();
15.0, function(){ /* code */ }();

new function(){ /* code */ }
new function(){ /* code */ }() //If no parameters, the last () is not required

//据说这个赢了
;(function(){}());