使用JavaScript ES6箭頭函數的即時函數

Question

有誰知道如何使用ES6箭頭語法編寫即時函數？

這裏做的ES3/5路：

(function() { 
    //... 
}()); 

我試過以下，但在最後一行得到unexpected token錯誤。

(() => { 
    //... 
}()); 

你可以在這裏測試：http://www.es6fiddle.net/hsb8bgu4/

Answer 1

從Arrow functions examples，

(() => "foobar")() // returns "foobar" 

所以，函數調用操作外應。

(() => { 
    //... 
})(); 

樣品：http://www.es6fiddle.net/hsb8s1sj/

Answer 2

這裏是我的演示代碼！

永遠記住，function_name + () === function_caller

/* ES5 */ 
 

 
// normal function 
 

 
function abc(){ 
 
    console.log(`Hello, ES5's function!`); 
 
} 
 
abc(); 
 

 
var abc = function xyz(){ 
 
    console.log(`Hello, ES5's function!`); 
 
}; 
 
abc(); 
 

 
// named function 
 

 
var abc = function xyz(){ 
 
    console.log(`Hello, ES5's function!`); 
 
}(); 
 

 

 
// anonymous function 
 
// 1 
 
(function(){ 
 
    console.log(`Hello, ES5's IIFE!`); 
 
})(); 
 

 
// 2 
 
(function(){ 
 
    console.log(`Hello, ES5's IIFE!`); 
 
}()); 
 

 
// 3 
 

 
var abc = function(){ 
 
    console.log(`Hello, ES5's function!`); 
 
}(); 
 

 

 
/* ES6 */ 
 

 
// named arrow function 
 
const xyz =() => { 
 
    console.log(`Hello, ES6's Arrow Function!`); 
 
}; 
 
xyz(); 
 

 

 
const xyz = (() => { 
 
    console.log(`Hello, ES6's Arrow Function!`); 
 
})(); 
 

 

 
// Uncaught SyntaxError: Unexpected token (
 

 
/* 
 
const xyz = (() => { 
 
    console.log(`Hello, ES6's Arrow Function!`); 
 
}()); 
 
*/ 
 

 
// anonymous arrow function 
 
(() => { 
 
    console.log(`Hello, ES6's Arrow Function!`); 
 
})();

Immediately-invoked function expression

let x; 
 

 
(x =() => { 
 
    console.log(`ES6 ${typeof(x)}`); 
 
})(); 
 

 
// ES6 function 
 

 
// OR 
 

 
(() => { 
 
    console.log(`ES6 ${typeof(Symbol)}`); 
 
})(); 
 

 
// ES6 function