Question

我如何解析这个给出Json响应的url？

 $.getJSON('http://url.php?id=chat_init&sess_d='+sessionID+'&user_id='+document.getElementById("user_id").value+    '&to_id='+document.getElementById("to_id").value,function (data) {

         alert(data.status);
         alert(data.msg);
         alert(data.room_id);

响应：

{"status":1,"msg":"chat is initilize","room_id":13}


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=us-ascii" />
    <title></title>
    <script src="http://code.jquery.com/jquery-latest.js" type="text/javascript"></script>
    <script type="text/javascript">
//<![CDATA[
    var sessionID=null ; 
    function A() { 
        $.getJSON('url.php?id=login&email='+document.getElementById("txtemail").value+'&password='+document.getElementById("txtpassword").value, function (data) { 
            sessionID = data.session_id;
            alert(data.status);
            alert(data.msg);
            alert(data.user_id);
            alert(sessionID);
        });
    }

    function B() {
        $.ajax({
            type: 'GET',
            url: 'url.php', 
            dataType: 'json',
            data: { 
                id: 'chat_init',
                sess_d: sessionID,
                user_id: $("#user_id").val(), 
                to_id: $("#to_id").val() 
        },success: function(data) { 
            alert(data.status); 
            alert(data.msg);
            alert(data.room_id); 
        }
    });

    //]]>
    </script>


</head>
<body>
    Username :

    <form>
        <input type="text" id="txtemail" />
        <br /><br />

        Password : <input type="password" id="txtpassword" />
        <br />

        <input type="button" value="Login" onclick="A()" />
        <br />

        My id is : <input type="text" id="user_id" />
        <br /><br />

        To ID is : <input type="text" id="to_id" />
        <br /><br />

        <textarea rows="10" cols="25"></textarea>
        <br /> <br />

        <textarea rows="2" cols="18"></textarea>

        <input type="button" value="Initialize chat" onclick="B()" />

    </form>
</body>
</html>

感谢任何帮助...

Answer 1

这有点难看，尝试将其重写为$.ajax电话：

$.ajax({
    type: 'GET',
    url: 'url.php',
    dataType: 'json',
    data: { 
        id: 'chat_init', 
        sess_d: sessionID,
        user_id: $("#user_id").val(),
        to_id: $("#to_id").val()
    },
    success: function(data) {
        alert(data.status);
         alert(data.msg);
         alert(data.room_id);
    }
});

Answer 2

<input type="button" value="Initialize chat" id="B" /> <!--note the id-->

$(document).ready(function() {

    //using the button with id "B" to call beta
    $('#B').on('click', function() {
        beta();
    });

    function beta() {
        $.ajax({

            //base url
            url: 'url.php',  

            //parameters
            data: {         
                id: 'chat_init',
                sess_d: sessionID,
                user_id: $("#user_id").val(),
                to_id: $("#to_id").val()
            },

            type: 'GET',
            dataType: 'json',
            success: function(data) {
                alert(data.status);
                alert(data.msg);
                alert(data.room_id);
            }
        });
    }

});

http://jsfiddle.net/g3zUe/

Answer 3

我已经更新了你的HTML和jQuery代码。我在它的最后测试了它并且它indeed make the AJAX call，但由于我的服务器上没有url.php，因此会出现404错误。看看它如何为您服务：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <title></title>
    <script src="http://code.jquery.com/jquery-latest.js" type="text/javascript"></script>
    <script type="text/javascript">
//<![CDATA[
    var sessionID = null; 
    function A() { 
        $.getJSON('url.php', {
            id: 'login',
            email: $("#txtemail").val(),
            password: $("#txtpassword").val() 
        }, function (data) { 
            sessionID = data.session_id;
            alert(data.status);
            alert(data.msg);
            alert(data.user_id);
            alert(sessionID);
        });
    }

    function B() {
        $.ajax({
            type: 'GET',
            url: 'url.php', 
            dataType: 'json',
            data: { 
                id: 'chat_init',
                sess_d: sessionID,
                user_id: $("#user_id").val(), 
                to_id: $("#to_id").val() 
            },
            success: function(data) { 
                alert(data.status); 
                alert(data.msg);
                alert(data.room_id); 
            },
            error: function(jqXHR, textStatus, errorThrown) {
                alert("Error: " + errorThrown);
            }
        });
    }

    $(document).ready(function() {
        $("#loginButton").click(A);
        $("#initChatButton").click(B);
    });

    //]]>
    </script>


</head>
<body>
    <form>
        <p>Username : <input type="text" id="txtemail" /></p>
        <p>Password : <input type="password" id="txtpassword" /></p>
        <p><input type="button" value="Login" id="loginButton" /></p>

        <p>&nbsp;</p>

        <p>My id is : <input type="text" id="user_id" /></p>

        <p>To ID is : <input type="text" id="to_id" /></p>
        <p><textarea rows="10" cols="25"></textarea></p>

        <p><textarea rows="2" cols="18"></textarea></p>

        <p><input type="button" value="Initialize chat" id="initChatButton" /></p>
    </form>
    </body>
</html>

解析json中url的响应

3 个答案: