<!DOCTYPE?html><html?lang="en"><head><meta?charset="UTF-8"><meta?name="viewport"?content="width=device-width,?initial-scale=1.0"><meta?http-equiv="X-UA-Compatible"?content="ie=edge"><title>Document</title></head><body><div?id="container"></div><script>???????????(function(){???????????var?data?=?[{num:20,age:30},{num:30},{num:40},{num:50}];???????????var?container?=?document.getElementById('container');???????????function?render(data){???????????????container.innerHTML?=?data.map(function(item){???????????????????var?i?;???????????????????console.log(item)???????????????????for(i?in?item){???????????????????????console.log(i)???????????????????????if(item.hasOwnProperty(i)){???????????????????????????//?console.log(i);???????????????????????????return?item[i];???????????????????????}??????????????????????????????????????????}???????????????});??????????????????????????}??????????????????????render(data);???????})()???</script></body></html>
為什么for in 沒有把對象里所有屬性遍歷出來？
江城fen
2018-07-16 00:04:05
