jQuery序列化后的表单值转换成Json

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[  {name: 'firstname', value: 'Hello'},  {name: 'lastname', value: 'World'}, {name: 'alias'}, // 值为空]

$.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;};