Call Webservice from HTML Page

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

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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

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using jQuery:

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