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javascriptfirefox-addontimeoutsleepwait

Sleep in Javascript via timeout?

I'd like to wait 1 minute and then execute a function f(). I have found out that in Javascript there isn't a sleep() function but I can use setInterval() or setTimeout() functions.

The window.setInterval() function works, but this is not what I want. I want to execute f() only once. I tried to use the setTimeout() function as follows.

var MyNamespace {
  ...
  f: function() {
  },
  ...
  click: function() {
    ...
    setTimeout("this.f()", 60000); // f() is never executed
    // setTimeout(this.f(), 60000); f() is executed immediately without timeout
    // window.setTimeout(...) doesn't help
  },
  ...
}

What could be wrong here?

The code is part of a Firefox extension.

Solution

  • There's your problem: "this.f()". Replace it with:

    setTimeout(this.f.bind(this), 60000);

    and it should work. Passing a string to setInterval() is never a good solution, just like using eval().

    See also