javascript - 从JavaScript中的对象获取值[重复](Get values from an object in JavaScript [duplicate])

Question

This question already has an answer here:(这个问题在这里已有答案：)

How to get all properties values of a Javascript Object (without knowing the keys)?(如何获取Javascript对象的所有属性值（不知道密钥）？) 20 answers(20个答案)

I have this object:(我有这个对象：)

var data = {"id": 1, "second": "abcd"}; These are values from a form.(这些是表格中的值。) I am passing this to a function for verification.(我将此传递给函数进行验证。) If the above properties exist we can get their values with data["id"] and data["second"] , but sometimes, based on other values, the properties can be different.(如果存在上述属性，我们可以使用data["id"]和data["second"]获取它们的值，但有时，基于其他值，属性可能不同。) How can I get values from data independent of property names?(如何从data获取与属性名称无关的值？)   ask by Hari krishnan translate from so

Answer 1

To access the properties of an object without knowing the names of those properties you can use a for ... in loop:(要在不知道这些属性的名称的情况下访问对象的属性，可以使用for ... in循环：)

for(key in data) { if(data.hasOwnProperty(key)) { var value = data[key]; //do something with value; } }