javascript - Convert form fields into JSON object -


i have following form:

<form id="myform" method="post">             <input type="text" name="matrix[]" value="1"/><br/>     <input type="text" name="matrix[]" value="2"/><br/>     <input type="text" name="matrix[]" value="3"/><br/>          <input type="text" name="multi_matrix[colors][]" value="red"/><br/>     <input type="text" name="multi_matrix[colors][]" value="blue"/><br/>             <input type="text" name="multi_matrix[weight][]" value="75"/><br/>     <input type="text" name="multi_matrix[weight][]" value="83"/><br/>           <input type="submit" value="send"> </form>

now want use javascript/jquery convert values json string. when use json.stringify($("#myform").serializearray()) code returns following:

[{"name":"matrix[]","value":"1"},{"name":"matrix[]","value":"2"},{"name":"matrix[]","value":"3"},{"name":"multi_matrix[colors][]","value":"red"},{"name":"multi_matrix[colors][]","value":"blue"},{"name":"multi_matrix[weight][]","value":"75"},{"name":"multi_matrix[weight][]","value":"83"}]

as can see fields have separate entry, want join them following:

{"matrix":[1,2,3],"multi_matrix":{"colors":["red","blue"],"weight":[75,83]}}

is there built-in function can ? or have iterate through fields , create json manually on own ?

you can extend jquery , create udf serializeobject done in this answer, based on serializearray():

$.fn.serializeobject = function() {     var o = {};     var = this.serializearray();     $.each(a, function() {         if (o[this.name] !== undefined) {             if (!o[this.name].push) {                 o[this.name] = [o[this.name]];             }             o[this.name].push(this.value || '');         } else {             o[this.name] = this.value || '';         }     });     return o; };

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