How to check obj value null or empty

Hi viewers,

How to check object key value is null or empty in javascript


function checkProperties(obj) {
    for (var key in obj) {
        if (obj[key] !== null && obj[key] != "") {
        alert("not Empty");
            return false;
            }
    }
    alert("Empty");
    return true;
}

var obj = {
    x: "",
    y: "",
    z: 1
}



checkProperties(obj) //returns true

console.log("SDfsdfs",checkProperties);