<script> obj={"111":"one","222":"two","333":"three"}; var i; for(i in obj) { console.log(i); console.log(obj[i]); } </script>
上面的代码运行后,在控制台显示:
111
three
即for循环中i每次取值为对象obj中的键(keys),而值是通过obj[i]来获取的.
JavaScript之对象应用
原文：https://www.cnblogs.com/iceberg710815/p/12151553.html
