Sys.UI.DomEvent $ addHandler método
Fornece um atalho para o addHandler método do Sys.UI.DomEvent classe. Esse membro é estático e pode ser chamado sem criar uma instância da classe.
$addHandler(element, eventName, handler);
Parâmetros
Termo |
Definição |
|---|---|
element |
O elemento DOM que expõe o evento. |
eventName |
O nome do evento. |
handler |
O manipulador de eventos para adicionar. |
Comentários
Para obter detalhes sobre o método que representa este atalho, consulte Sys.UI.DomEvent addHandler método.
Exemplo
O exemplo a seguir mostra como associar um manipulador de eventos um elemento usando o $addHandler método de atalho.
<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html >
<head id="Head1" runat="server">
<title>$addHandler Example</title>
<style type="text/css">
#UpdatePanel1 {
width:300px; height:100px;
}
</style>
</head>
<body>
<h1>$addHandler Example</h1>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server"/>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" ChildrenAsTriggers="False" UpdateMode="Conditional">
<ContentTemplate>
<asp:Panel ID="Panel1" runat="server" GroupingText="Update Panel">
<asp:Label ID="Label1" runat="server" Text="Click button to see event details."></asp:Label>
<br /><br />
<asp:Button ID="Button1" runat="server" Text="Button" AccessKey="b" />
<br /><br />
<asp:Label ID="Label2" runat="server"></asp:Label>
</asp:Panel>
</ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
</html>
<script type="text/javascript">
$addHandler($get("Button1"), "click", processEventInfo);
var myArray = ['altKey', 'button', 'charCode', 'clientX', 'clientY',
'ctrlKey', 'offsetX', 'offsetY', 'screenX', 'screenY',
'shiftKey', 'target', 'type'];
// Event handler displays element properties specified in array
function processEventInfo(eventElement) {
var result = '';
for (var i = 0, l = myArray.length; i < l; i++) {
var arrayVal = myArray[i];
if (typeof(arrayVal) !== 'undefined') {
// Example: eventElement.clientX
result += arrayVal + " = " + eval("eventElement." + arrayVal) + '<br/>';
}
}
$get('Label2').innerHTML = result;
}
</script>
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html >
<head id="Head1" runat="server">
<title>$addHandler Example</title>
<style type="text/css">
#UpdatePanel1 {
width:300px; height:100px;
}
</style>
</head>
<body>
<h1>$addHandler Example</h1>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server"/>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" ChildrenAsTriggers="False" UpdateMode="Conditional">
<ContentTemplate>
<asp:Panel ID="Panel1" runat="server" GroupingText="Update Panel">
<asp:Label ID="Label1" runat="server" Text="Click button to see event details."></asp:Label>
<br /><br />
<asp:Button ID="Button1" runat="server" Text="Button" AccessKey="b" />
<br /><br />
<asp:Label ID="Label2" runat="server"></asp:Label>
</asp:Panel>
</ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
</html>
<script type="text/javascript">
$addHandler($get("Button1"), "click", processEventInfo);
var myArray = ['altKey', 'button', 'charCode', 'clientX', 'clientY',
'ctrlKey', 'offsetX', 'offsetY', 'screenX', 'screenY',
'shiftKey', 'target', 'type'];
// Event handler displays element properties specified in array
function processEventInfo(eventElement) {
var result = '';
for (var i = 0, l = myArray.length; i < l; i++) {
var arrayVal = myArray[i];
if (typeof(arrayVal) !== 'undefined') {
// Example: eventElement.clientX
result += arrayVal + " = " + eval("eventElement." + arrayVal) + '<br/>';
}
}
$get('Label2').innerHTML = result;
}
</script>