html form을 json으로 변환

serializeObject function 추가

$.fn.serializeObject = function()
{
    var o = {};
    var a = 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;
};

호출

$.ajax({
	url : 'url',
	contentType: 'application/json',
	data : JSON.stringify($("form").serializeObject()),
	type : 'POST',
	dataType : 'json',
	success : function(result) {
		.....
	}
});

[참고] Send JSON Data on HTML form submit