js determines if there is a simple instance of of that does not need a loop for the array key
- 2021-07-07 06:28:19
- OfStack
Examples are as follows:
var aaa = {
"0":"a",
"1":"b",
"2":"c",
"aa":"d",
"4":"e"
};
alert(aaa .hasOwnProperty(4));//true