MVC AngularJS日期字段无法编辑

Question

我的日期字段HTML是

alert(checkRGB("rgb(0,0,300)"));

function checkRGB(input) {
  var i, elem, validRGB;
  validRGB = false;
  // if input is within “rgb(”x,x,x“)“, should continue to execute
  if((input.slice(0, 4) === "rgb(") && (input.slice(-1) === ")")) {

   // Getting only "x, x, x," elements and make them array;
    elem = input.slice(4, -1).split(",");

    // Looping through array elements
    for(i = 0; i < elem.length; i++) {
      elem[i] = parseInt(elem[i]);

      // if array elements > 0 and <= 255 , return true;
      if((elem[i] >= 0 && elem[i] <= 255)) {
        validRGB = true;
      }
      else
      {
      validRGB = false;
      break;
      }
      
    }

  }
  return validRGB;
};

jsDate功能如下

<input class="form-control"type="text" name="txtOrderContractFinishDate" id="txtOrderContractFinishDate" ng-model="SelectedOrder.OrderContractFinishDate  | jsDate | date:'MM/dd/yyyy'" placeholder="mm/dd/yyyy" />

日期从JSON日期格式转换为app.filter("jsDate", function () { return function (x) { return new Date(parseInt(x.substr(6))); }; }); 格式，没有任何问题。但是一旦显示数据后，如果我尝试编辑日期字段，则不允许我这样做。我是angularjs的新手。有人可以帮忙吗？