javascript - 如何使用 javascript/jquery 获取第一个 json 元素处 json 数组中所有键的值

Question

这个问题已经有答案了:

Getting JavaScript object key list (19 个回答)

已关闭 3 年前。

var resultJSON = [{"name":"AAA","createdDate":"8/14/2019"},{"name":"ABAB","_id":"52f0e7719c3fccfabfaaf5218bad7d22","createdDate":"8/14/2019"},{"name":"BBB","_id":"848e3d2fcedad749fa8dc22b97db663a","createdDate":"8/14/2019"}];

for (var k in resultJSON[0]);
alert(resultJSON[k]);

Answer 1

使用Object.keys():

var resultJSON = [{"name":"AAA","createdDate":"8/14/2019"},{"name":"ABAB","_id":"52f0e7719c3fccfabfaaf5218bad7d22","createdDate":"8/14/2019"},{"name":"BBB","_id":"848e3d2fcedad749fa8dc22b97db663a","createdDate":"8/14/2019"}];
console.log(Object.keys(resultJSON[0]));