ES6中箭头函数的定义与调用方式详解_箭头函数使用接口

1

var f = v => v;

1

2

3

var f = function( v ) {

 return v;

}

1

var f = () => 5;

1

var f = function() { return 5};

1

var sum = ( a, b) => a + b;

1

2

3

var sum = function( a, b) {

 return a +b;

}

1

var sum = (a, b) => { return a+b;}

1

var getFunction = id => ({id: id, anme: "Temp"});

1

const full = ({first, last}) => first +" "+ last;

1

2

3

function full(person) {

 return person.first +" "+ person.last;

}

1

2

3

[1,2,3].map(function(x){

 return x*x;

});

1

[1,2,3].map(x => x*x);

1

2

3

var result = values.sort(function(a, b){

 return a -b;

});

1

var result = values.sort((a, b) => a-b);

1

2

3

4

5

const numbers = (...nums) => nums;

numbers(1,2,3,4,5,6,7,8,9); //[1,2,3,4,5,6,7,8,9]

//...nums 表示的是一个数组

const headAndTail = ( head, ...tail) => [head, tail];

headAndTail(1,2,3,4,5,6,7,8,9);// [1, [2,3,4,5,6,7,8,9]]