提交 form表单js转成json

$(function (){
$("#commit").click(function (){
var jsonuserinfo = $('#proForm').serializeObject();
alert(JSON.stringify(jsonuserinfo));
});
})

$.fn.serializeObject = function()
{
var o = {};
var a = this.serializeArray();
$.each(a, function() {
if (o[this.name]) {
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;
};