javascript - 如何使用javascript / jquery获取第一个json元素的json数组中所有键的值[重复](How can get the value of all the keys in json array at 1st json element using javascript/jquery [duplicate])

Question

(This question already has answers here) : ((这个问题已经在这里有了答案) ：)

Getting JavaScript object key list (17 answers) (获取JavaScript对象键列表 （17个答案）)

Closed 4 hours ago . (4小时前关闭。)

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]);

  ask by Ansh Jain translate from so

Answer 1

Use Object.keys() :(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]));