JavaScript 对象部署 Iterator 接口

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const name = {             first:"hello",             last:"world",             fullname: "hello world"         }

方式一、Object.keys

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for (var i of Object.keys(name)) {                 console.log(i,"-",name[i])             }

　　

 

方法二、Object.keys + Generator

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function *map(item) {            for (var i of Object.keys(item)) {                yield [i,item[i]]            }        }        for(var [key, value] of map(name)) {            console.log(key,"-",value)        }

　

 

注：generator函数中不能使用箭头函数

例：

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*map = (item) => {             for (var i of Object.keys(item)) {                 yield [i,item[i]]             }         }