javascript - Ajax function doesn't execute when any of the input fields are not supplied in django -

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i have below ajax function, working fine when input values fields, doesn't work when not supply value of 3 fields (pname,psection, , rinput-json) 

 <script type="text/javascript">         function saveprof() {             $('.spinner').show();             $.ajax({                 type: "post",                 url: "saveprof",                 enctype: 'multipart/form-data',                 async: true,                 data: {                     'pname_aj': $('#pname').val(),                     'psection_aj': $('#psection').val(),                     'rinput_aj' : json.stringify(fun()),                     'csrfmiddlewaretoken': $("input[name=csrfmiddlewaretoken]").val()                 },                 success: function (data, textstatus, jqxhr) {                     $('#message').html(data);                     window.location.href = 'myprofile';                     window.location('myprofile');                       $('.spinner').fadeout();                 }             });         } </script>

how can make work if values of fields not supplied ?

for information, call made django view save fields in database.

it sounds values optional?

if so, perhaps can check see if values exist, , if not, submit empty string:

data: {                 'pname_aj': ( $('#pname').val() || ""),                 'psection_aj': ( $('#psection').val() || ""),                 'rinput_aj' : (json.stringify(fun()) || ""),                 'csrfmiddlewaretoken':$("input[name=csrfmiddlewaretoken]").val()             },

so if user has entered values in sections (and fun() returns can stringified, variables submitted. otherwise, empty string gets submitted.


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