来自没有AJAX的表单的POST JSON数据

Question

我试图在不使用AJAX的情况下将数据发布到REST API.我想以JSON格式发送数据.我有以下代码,但我试图弄清楚如何转换输入字段并将其POST到服务器.这是我的代码尝试:

<form id = "myform" method = "post">
id: <input type = "text" id = "user_id" name = "user_id">   
data: <input type = "text" id = "user_data" name = "user_data">  
<input type = "button" id = "submit" value = "submit" onClick='submitform()'>
</form>

<script language ="javascript" type = "text/javascript" >
function submitform()
{   
 var url = '/users/' + $('#user_id').val();
 $('#myform').attr('action', url);

 //
 // I think I can use JSON.stringify({"userdata":$('#user_data').val()}) 
 // to get the data into JSON format but how do I post it using js?  
 //

 $("#myform").submit();
}

Answer 1

您可以使用json值添加隐藏的输入字段,如下所示 -

function submitform() {
    var url = '/users/' + $('#user_id').val();
    $('#myform').attr('action', url);
    var data = JSON.stringify({
        "userdata": $('#user_data').val()
    })
    $('<input type="hidden" name="json"/>').val(data).appendTo('#myform');
    $("#myform").submit();
}

您可以使用json参数(隐藏输入的名称)访问您的json