通过单击AngularJs中的按钮用输入文本框替换标签，反之亦然

Question

我有一个带有标签和按钮编辑的表单，当我单击按钮时，标签应转换为文本框，标签数据为文本，当我保存时，文本框应再次转换为标签。

在 AngularJs 中我们如何处理？谁能提供一些这方面的信息？

html:

<form ng-app="testApp" ng-controller="testController">
    <label class="keyColumn">name: </label>
    <label class="valueCoulmn">stackover flow </label>
    <button ng-click="editLabel">Edit</button>
</form>

Controller.js：

(function() {
  angular
    .module("testApp", [])
    .controller('testController', function($scope) {
      $scope.editLabel = function() {}
    });
})();

Answer 1

您可以使用ngshow 和ngHide 显示/隐藏标签和输入。
基本上<label> 应该包含一个显示数据的表达式，对应的<input> 应该包含指向相同数据的ngModel。然后使用按钮简单地在显示模式之间切换：

angular.module('test', []).controller('testCtrl', function($scope) {
  $scope.editMode = false;
  $scope.name = "John Doe";
});

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="test" ng-controller="testCtrl">
  <form>
    <label ng-hide="editMode">{{name}}</label>
    <input ng-show="editMode" ng-model="name">
    <button ng-click="editMode=true">Edit</button>
    <button ng-click="editMode=false">Save</button>
  </form>
</div>

如果您认为您的表单非常繁重，并且不想在 DOM 中同时拥有 <label> 和 <input>，请改用 ngIf。

Answer 2

您可以在label 标签中使用contenteditable 属性。

查看此演示：

(function() {
  "use strict";

  var app = angular.module("app", []);
  app.controller("Controller", ["$scope",
    function($scope) {
      $scope.buttonText = "Edit";

      $scope.editSave = function(evt) {
        var label = evt.target.previousElementSibling; // Get the label tag from your button.
        var labelData = label.innerText; // Get the label text.

        alert(labelData);

        if ($scope.buttonText == "Edit") { // If the current button's text is "Edit"...
          label.setAttribute("contenteditable", true); // Set contenteditable=true to your label.

          /* To make focusable your editable label. */
          label.setAttribute("target", 0);
          label.focus(); // Set the focus in your label.
          $scope.buttonText = "Save"; // Change the button's text to "Save".
        } else {
          label.removeAttribute("contenteditable");
          label.removeAttribute("target");
          $scope.buttonText = "Edit";
        }
      };
    }
  ]);
})();

label {
  padding: 2px;
}
label[contenteditable=true] {
  border: solid 1px #CCCCCC;
  padding: 2px;
}

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div data-ng-app="app">
  <div data-ng-controller="Controller">
    <form id="form">
      <div>
        <label>Label</label>
        <button data-ng-bind="buttonText" data-ng-click="editSave($event)" type="button"></button>
      </div>
    </form>
  </div>
</div>

此演示适用于您的上次更新：

(function() {
  angular
    .module("testApp", [])
    .controller('testController', function($scope) {
      $scope.buttonText = "Edit";

      $scope.editLabel = function(evt) {
        var label = evt.target.previousElementSibling; // Get the label tag from your button.
        var labelData = label.innerText; // Get the label text.

        alert(labelData);

        if ($scope.buttonText == "Edit") { // If the current button's text is "Edit"...
          label.setAttribute("contenteditable", true); // Set contenteditable=true to your label.

          /* To make focusable your editable label. */
          label.setAttribute("target", 0);
          label.focus(); // Set the focus in your label.
          $scope.buttonText = "Save"; // Change the button's text to "Save".
        } else {
          label.removeAttribute("contenteditable");
          label.removeAttribute("target");
          $scope.buttonText = "Edit";
        }
      };
    });
})();

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<form ng-app="testApp" ng-controller="testController">
  <label class="keyColumn">name:</label>
  <label class="valueCoulmn">stackover flow</label>
  <button ng-bind="buttonText" ng-click="editLabel($event)"></button>
</form>

希望这会有所帮助。