Is there a way to find out postback element in updatepanel using javascript?
有没有办法在updatepanel中使用javascript找出回发元素?
I tried code below but args.get_postBackElement().id is undefined.
我尝试了下面的代码,但args.get_postBackElement()。id未定义。
script>
Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequestHandler);
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
function BeginRequestHandler(sender, args) {
try {
args.get_request().set_userContext(args.get_postBackElement().id);
}
catch (e) {
}
}
function EndRequestHandler(sender, args) {
try {
if (args.get_error() == undefined) {
var sName = args.get_response().get_webRequest().get_userContext();
if (sName == "btnDetails") {
//DoSomething();
}
else {
//DoSomethingelse();
}
}
}
catch (e) {
}
}
2 个解决方案
#1
0
Try this
<script type="text/javascript">
Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequestHandler);
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
var postBackElementID;
function BeginRequestHandler(sender, args) {
try {
postBackElementID = args.get_postBackElement().id.substring(args.get_postBackElement().id.lastIndexOf("_") + 1);
}
catch (e) {
}
}
</script>
#2
0
args.get_postBackElement() returns null if control is inside update panel.
如果控件在更新面板内,则args.get_postBackElement()返回null。
Try following properties to find out the element:
尝试以下属性来找出元素:
sender._postBackSettings.async - Detect whether the request is async.
sender._postBackSettings.async - 检测请求是否为异步。
sender._postBackSettings.asyncTarget - Gets the async postback control name
sender._postBackSettings.asyncTarget - 获取异步回发控件名称
$("*[name='sender._postBackSettings.asyncTarget']").attr('id') - Gets the id of the async postback control name. sender._postBackSettings.asyncTarget should be replaced by the value
$(“* [name ='sender._postBackSettings.asyncTarget']”)。attr('id') - 获取异步回发控件名称的id。 sender._postBackSettings.asyncTarget应该替换为值
#1
0
Try this
<script type="text/javascript">
Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequestHandler);
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
var postBackElementID;
function BeginRequestHandler(sender, args) {
try {
postBackElementID = args.get_postBackElement().id.substring(args.get_postBackElement().id.lastIndexOf("_") + 1);
}
catch (e) {
}
}
</script>
#2
0
args.get_postBackElement() returns null if control is inside update panel.
如果控件在更新面板内,则args.get_postBackElement()返回null。
Try following properties to find out the element:
尝试以下属性来找出元素:
sender._postBackSettings.async - Detect whether the request is async.
sender._postBackSettings.async - 检测请求是否为异步。
sender._postBackSettings.asyncTarget - Gets the async postback control name
sender._postBackSettings.asyncTarget - 获取异步回发控件名称
$("*[name='sender._postBackSettings.asyncTarget']").attr('id') - Gets the id of the async postback control name. sender._postBackSettings.asyncTarget should be replaced by the value
$(“* [name ='sender._postBackSettings.asyncTarget']”)。attr('id') - 获取异步回发控件名称的id。 sender._postBackSettings.asyncTarget应该替换为值