Call Webservice from HTML Page

How 开发者_StackOverflow社区we can call webservice from html page using javascript

1. Because of same origin restrictions, you might need to use JSONP through script injection.

2. Of course if you are talking a Web Service on the same origin, just use AJAX.

3. Through an web browser extension

using jQuery:

$.ajax({ 
    type: "POST", 
    contentType: "application/json; charset=utf-8", 
    url: "WebService.asmx/WebMethodName", 
    data: "{}", 
    dataType: "json"
});