JavaScript Basics-Event 1

Principle

There are two types of events. The first browser event, thrown by the browser, is the basis of human-computer interaction, and the second custom event, which is a programmer-thrown event, is a simulated event flow. Both are designed to complete the delivery of data.

Browser events

mechanism

Bubbles and captures two mechanisms. Only bubbling is supported for ie8-, so only event bubbling is allowed in the actual application.

processing Mode

differences between ie8-and ie9+, standard browser event objects

Browser event type and processing separate section

Custom events

Typically used in DOM rendering bind custom events such as ' changeattr '-to Data source (JSON object property) change, throw ' changeattr ' event---> Dom re-render.

Dom currently does not support custom events. You need to expand yourself, or use jquery's custom event mechanism:

        // Event Source        var $source = $ ({});         // binding        $source. On (' changeattr ', function (Event,data) {});         // throws a custom event, [data] is a passed array        $source. Trigger (' chageattr ', [data]);         // removed from        $source. Off (' changeattr ', [FnName]);