How to check if a value exists in an object using JavaScript

Question

I have an object in JavaScript:

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

How do I check that te

Answer 1

Use a for...in loop:

for (let k in obj) {
    if (obj[k] === "test1") {
        return true;
    }
}