how to send array by ajax and jquery
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my html code

    <select name="tag[]" >
                                                        
            <option value="1">c</option>
             <option value="2">java</option>
             <option value="3">php</option>
             <option value="4">c++</option>
    </select>

here user can select multiple option user selected the two option then how to send two value at a same time by ajax 

in php i can do this by `serialize` function but how to send this data by the ajax

and also how to get the multiple value by jquey ? like in php i am getting the tag by array but for ajax i need to get this by jquery
