Javascript 文件突然停止工作，没有任何变化

Question

So I got help on this code earlier and it was working before perfectly. However, upon opening VS Code again the code no longer responds with zero errors.

    var runned = false;
    var d = new Date();
    if (d.getHours(5) == 5 && !runned) {
    alert("Hello");
    runned = true;
    }

The code is simply supposed to get the current hour and return an alert. I verified that the js file was connected to the HTML file with some other code and it worked.

Answer 1

var runned = false;
    var d = new Date();
    if (d.getHours() == 5 && !runned) {
    alert("Hello");
    runned = true;
    }

1. getHours() doesn't take parameters
2. getHours uses the 24-hour clock model, ie 0-23 so 5 is 5 am but 17 is 5pm
3. d.getHours() as used above without an argument makes it work in all use case scenarios