1 00:00:00,450 --> 00:00:04,470 Jake Query is designed to respond to events in an HMO document. 2 00:00:05,450 --> 00:00:11,410 All the actions that a visitor performs on your Web page are referred to as events. 3 00:00:11,470 --> 00:00:18,070 There are many different types of events such as clicking with your mouse on an element moving a mouse 4 00:00:18,160 --> 00:00:27,160 over an element even just loading an HMO page in your browser can be considered an event we can program 5 00:00:27,190 --> 00:00:30,100 events to trigger certain actions. 6 00:00:30,100 --> 00:00:35,150 Let's take a look at a basic example on this HMO page. 7 00:00:35,150 --> 00:00:38,240 We've created a script that hides a line of text. 8 00:00:38,360 --> 00:00:39,320 Once it's clicked on 9 00:00:44,180 --> 00:00:50,650 here the event is a mouse click and the action is hiding the text. 10 00:00:50,670 --> 00:00:59,250 Let's take a look at the code for this event. 11 00:00:59,270 --> 00:01:06,790 Now we're focusing on what's in between the open and close script tags. 12 00:01:06,800 --> 00:01:13,540 We start with our document ready function to ensure that the function is only executable once the page 13 00:01:13,540 --> 00:01:16,980 is finished loading. 14 00:01:17,030 --> 00:01:25,270 Next we specify the element that will be affected by the event which in this case is the mouse click. 15 00:01:25,270 --> 00:01:30,460 Lastly we specify that the element should be hidden after the event has taken place 16 00:01:34,640 --> 00:01:38,400 you'll notice that the element disappears on a single mouse click. 17 00:01:38,630 --> 00:01:48,400 We can change from single to double by changing the event to double click. 18 00:01:48,560 --> 00:01:49,630 We save our file. 19 00:01:50,980 --> 00:01:56,030 And refresh the page and notice that single clicking no longer works. 20 00:01:56,170 --> 00:01:59,760 But if we double click it hides the element.