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json {B:["北京"，“保定”，"包头"]，D:["大连"，“丹东”]} 中,angular js如何取得“B”，“D”两个字符
{B:["北京"，“保定”，"包头"]，D:["大连"，“丹东”]}
小伙看你根骨奇佳，潜力无限，来学PHP伐。
跟angular无关
Object.keys(json)
https://developer.mozilla.org...
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
跟angular无关
https://developer.mozilla.org...