Trigger () and bind () usage analysis in jquery _jquery

This example describes the trigger () and bind () usage in jquery. Share to everyone for your reference, specific as follows:

Trigger (Type)

Triggers a class of events on each matching element.

return value: JQuery

Parameters:

Type (String): Types of events to trigger

Example:

Copy Code code as follows:

$ ("P"). Trigger ("click")

1.trigger () triggering event

This method is a new function in jquery 1.3 that triggers the event.
The events here are like the events in jquery's help documentation, such as: Click, MouseOver, KeyDown, and so on with the action of JS events, and like show, hide this is the effect is not an event.

2. Why use Trigger ()?

I believe that we have just begun to contact with this idea?

For example, the front page has: <p id= "P1" > please click here! </p>
You want to load the page to execute this event to this P bind the click event (write the following code in $ (function () {}); inside):

$ ("#p1"). Click (function () {
  alert ("hello!");
});

If you use trigger (), you will write this:

$ ("#p1"). Click (function () {
  alert (' hello! ');
}). Trigger (click);

Isn't it more troublesome to write this? It can be said, but the biggest advantage of using trigger () is that it can pass parameters in. For example:

MyEvent is the custom event name
$ ("#p1"). Bind ("MyEvent", function (EVENT,STR1,STR2) {
  alert (str1 + ' + str2); 
});
$ ("#p1"). Trigger ("MyEvent", ["Hello", "World"]);

You can also write this:

$ ("#p1"). Bind ("MyEvent", function (EVENT,STR1,STR2) {
  alert (str1 + ' + str2);
}). Trigger ("MyEvent", ["Hello", "World"]);

I hope this article will help you with the jquery program design.