一

$.ajax({

type: "post",

url: "http://xx.com/TestService.asmx/Test",

dataType: 'xml',

data: { inputStr: 'everyone' },

success: function (data) {

alert(data); //xml对象

},

error: function (XMLHttpRequest, textStatus, errorThrown) {

console.log(XMLHttpRequest);

alert('error:' + errorThrown);

}

});

二

 $.ajax({
        url: "FirstService.asmx/Login",
        type: "POST",//"GET",
        dataType: "json",//"xml",
        contentType: "application/json; charset=utf-8",
        data: "{info:'" + str + "'}",//{info:JSON.stringify(data.field)},//data.field  {info:'str'}
        success: function (backdata) {
            console.log(backdata);
            if (backdata.permission === "putong") {
                window.location.href = "index1.html";
            }else{
   alert("服务器验证失败");
}
        },
        error: function (jsondata) {
            console.log(jsondata);
alert("服务器连接失败");
        }
    });