AngularJS ng - 重复，ng - 输入文本奇怪行为的模型

Question

我是AngularJS的新手，我试着做下面的代码

var app = angular.module('SomeApp', []);

app.controller('QuotationController', function($scope) {

   $scope.init = function(){
     $scope.chargableDescription = [""];
     $scope.chargablePrice = [];
     $scope.chargableQuantity = [];
     $scope.chargableTotal = [];

   }

   $scope.chargableInput = function($last){

     if ( $last ) {
       $scope.chargableDescription.push([""]);
     }
   }
});

基本上，我在这里想要实现的是当用户在最后一个 chargableDescription 字段上输入内容时插入整个输入组。

      <div class="chargable-group" ng-repeat="item in chargableDescription" >

            <div class="col-md-3">
                 <label class="form-control-label" for="l2" id="chargable-label">Chargable Item</label>
            </div>

            <div class="col-md-9" id="chargable-header">
                 <textarea name="chargable[]" class="form-control dynamic chargable" placeholder="Chargable Description" ng-model="chargableDescription[$index]" ng-keypress="chargableInput($last)"> </textarea>
                 <br>
                 <input type="number" class="form-control" step="0.01" name="chargable-price-1" placeholder="Chargable Price" ng-model="chargablePrice[$index]">
                 <br>
                 <input type="number" class="form-control" name="chargable-quantity-1" placeholder="Chargable Quantity" ng-model="chargableQuantity[$index]">
                 <br>
                 <input type="number" class="form-control" step="0.01" name="chargable-total-1" placeholder="Chargable Total" readonly ng-model="chargableTotal[$index]" >
            </div>

      </div>

它确实有效，但是，我想知道为什么当我在 textarea 上进行任何输入时，一旦我输入一个字符，光标就会消失。 如何消除这种行为以及导致这种行为的因素是什么？

更新：

已解决 我添加了 ng-model-options = { updateOn : 'blur' } 似乎解决了问题

Answer 1

它适用于我https://plnkr.co/IV9t4fhln5v3l81NHaPC

你的 Angular 版本是什么？

(function() {

  'use strict';

  var app = angular.module('SomeApp', []);

  app.controller('QuotationController', function($scope) {

    $scope.init = function() {
      $scope.chargableDescription = [""];
      $scope.chargablePrice = [];
      $scope.chargableQuantity = [];
      $scope.chargableTotal = [];

    }

    $scope.chargableInput = function($last) {

      if ($last) {
        $scope.chargableDescription.push([""]);
      }
    }

    $scope.init();
  });


})();