clearTimeout和setTimeout例子

引用

var alarm = {
  remind: function(aMessage) {
    alert(aMessage);
    delete this.timeoutID;
  },

  setup: function() {
    this.cancel();
    var self = this;
    this.timeoutID = window.setTimeout(function(msg) {self.remind(msg);}, 1000, "Wake up!");
  },

  cancel: function() {
    if(typeof this.timeoutID == "number") {
      window.clearTimeout(this.timeoutID);
      delete this.timeoutID;
    }
  }
};
window.onclick = function() { alarm.setup() };