I am getting into a little jam here. I created a webservice using C#. When I Invoke the WebService it works fine. The Javascript seems to be hitting the webservice, breaking, and then follows through with the rest of the operation. I think this is a matter of me calling the WebService wrong. I've searched all over and have found tons of different examples, however, none of them seem to work.
If you go to http://success.darkslidedesign.com it triggers test.js which then calls my web service located here: http://www.darkslidedesign.com/services/ms_Alert.asmx
Here is the test.js code -
var xmlHttp;
setTimeout("sendMessage('rory@careercheatcode.com');", 2000);
function doUpdate()
{
if(xmlHttp开发者_如何学Go.readyState===4){
alert("Worked");
}
else{
alert("Broke");
}
}
function sendMessage(strTo)
{
try{
// Opera 8.0+, Firefox, Safari
xmlHttp = new XMLHttpRequest();
} catch (e){
// Internet Explorer Browsers
try{
xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try{
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e){
// Ajax is not supported
return false;
}
}
}
xmlHttp.open("post", "http://www.darkslidedesign.com/services/ms_Alert.asmx", true);
var params = "op=Sending_Email&strEmailAddrFrom=rory@darkslidedesign.com&strEmailAddrTo=" + strTo;
xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlHttp.setRequestHeader("Content-length", params.length);
xmlHttp.setRequestHeader("Connection", "close");
xmlHttp.onreadystatechange=doUpdate;
xmlHttp.send(params);
return false;
}
You better start with jQuery $.ajax() Here is one snippet that works for me to post comment from a textbox.
function Post() {
var ow = "username";
var cmt = $("#comment").val();
$.ajax(
{
type: "POST",
url: "/comment/Save",
dataType: "json",
data: "id=2332&author=" + ow + "&cmt=" + cmt,
success: function (result) {
if (result.status === "OK") {
alert('Comment posted');
}
else
alert("Post failed");
},
error: function (req, status, error) {
alert("Sorry! Post failed due to error");
}
});
}
Hope this will guide you. Thanks
For web service calls from Javascript, I use two things:
- jQuery, as pixelbobby mentioned. It is a walk in the park and makes everything super awesome-sauce!
- I use the asp.net MVC framework. It is far too verbose for me to explain it here, but it is pretty easy to get it up and running. Basically, you create a controller class, create some methods, and return json-serialized values. You might also have to add some routes to your global.asax file.
I would definately recommend reading up on both of these things... They are both pretty awesome!
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