如何使用javascript检查对象中是否存在值 [英] How to check if value exists in object using javascript

问题描述

我在javascript中有一个对象

I have an object in javascript

var obj = {
   "a": "test1",
   "b": "test2"
}

如何检查test1作为值存在于对象中？

How do I check that test1 exists in the object as a value?

推荐答案

您可以将Object的值转换为数组并测试字符串是否为当下。它假定Object没有嵌套且字符串完全匹配：

You can turn the values of an Object into an array and test that a string is present. It assumes that the Object is not nested and the string is an exact match:

var obj = { a: 'test1', b: 'test2' };
if (Object.values(obj).indexOf('test1') > -1) {
   console.log('has test1');
}

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/values

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