testing objects for properties javascript

1function checkObj(obj, checkProp) {
2  if(obj.hasOwnProperty(checkProp)){
3    return obj[checkProp];
4  }else{
5    return "Not Found"
6  }
7}

1var myObj = {
2  top: "hat",
3  bottom: "pants"
4};
5myObj.hasOwnProperty("top");    // true
6myObj.hasOwnProperty("middle"); // false