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A brief talk on JavaScript event processing _ Basic knowledge

Source: Internet
Author: User
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Event handling

One, event Source: Any HTML element (node), body, Div, button

II. Events: your operation

Mouse:
Click
Dblick Double click
OnContextMenu Text Menu

Copy Code code as follows:

<body oncontextmenu= "return false" >//a program that disables the right key

MouseOver, put it on.
Mouseout leave
MouseDown Press the
MouseUp Lift Up
MouseMove Mouse Movement

Keyboard:
KeyPress keyboard Events
KeyUp Lift Up
KeyDown Press the

Document:
Load load
OnLoad is the event that is triggered after a page load completes
Unload off
Before Breforeunload closes

Form:
Focus Event
Blur lose focus
Submit Commit Event
Change events

Other:
Scroll scrolling
Selectstart Select Event

Iii. Event handlers

First type:
Format: <tag on event = "event handler"/>
Instance:

Copy Code code as follows:

<script>
Function Show () {
var One=document.getelementbyid ("one");
alert (One.innertext);
}
Show ();
</script>
<body>
<div id= "One" >
Wwwwwwwwwwwwwwwww
</div>
<input type= "button" onclick= "Show ()" Value= "Show" >

The second type:
Directly inside the JavaScript object. On handler

Copy Code code as follows:

<div id= "Two" >
Hello, cloud-dwelling community http://www.jb51.net
</div>
<script>
var One=document.getelementbyid ("two");
One.onclick=function () {
This.style.backgroundcolor= "Red";
}
</script>

The third type:
Basically no one to use

Copy Code code as follows:

<script for= "event source ID" event= "event" > event handler </script>
<div id= "th" >
Hello, cloud-dwelling community http://www.jb51.net
</div>
<script for= "th" event= "onclick" >
var One=document.getelementbyid ("th");
One.style.backgroundcolor= "Red";
</script>

Small partners understand the JavaScript event processing, if you have any questions, leave me a message.

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Related Keywords:
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