javascript巧用eval函数组装表单输入项为json对象的方法

var myObj = {}; myObj.x = document.getElementById("x").value; myObj.y = document.getElementById("y").value;//... //然后ajax post或get提交

eval('A={}');if (A.b==undefined){ A.b = {};}eval('A.b.c = 1');alert(A.b.c);

运单号：<input type="text" name="AwbPre" value="112" style="width:40px"/>-<input type="text" name="AwbNo" value="12312311"/><br/>结算方式：<select name="SettlementMode" style="width:100px"> <option value="CASH" selected="selected">现金</option> <option value="MONTH">月结</option></select><br/>不需要赋值的属性：<input type="input" name="NotMe" value="NotMe ..." isModel="false"/><script type="text/javascript">function setFormModel(modelName){  eval(modelName + "={}");  var inputArr = document.getElementsByTagName("INPUT");  for(var i=0;i<inputArr.length;i++){   var isModel = inputArr[i].getAttribute("isModel");   var itemName = inputArr[i].name;   var itemValue = inputArr[i].value;      if(isModel!="false"){    eval(modelName + "." + itemName + "='" + itemValue + "';");   }     }  var selectArr = document.getElementsByTagName("SELECT");  for(var i=0;i<selectArr.length;i++){   var isModel = selectArr[i].getAttribute("isModel");   var itemName = selectArr[i].name;   var itemValue = selectArr[i].value;     if(isModel!="false"){    eval(modelName + "." + itemName + "='" + itemValue + "';");   }     }  return modelName;  }setFormModel("AwbModel");alert("单号：" + AwbModel.AwbPre + "-" + AwbModel.AwbNo + "/n结算方式：" + AwbModel.SettlementMode + "/n不该有的属性：" + AwbModel.NotMe);</script>