angularJS绑定到输入的回车键,如果输入是按钮则提交

时间:2015-01-23 09:21:39

标签: javascript angularjs

我有这样的指示,转到模态窗口中的下一个输入(或按钮):

.directive('autoVrm', function () {
    return function (scope, element, attrs) {
                var counter = 0;
            element.bind("keydown keypress", function (event) {
                console.log(element);           
                if(event.which === 13) {
                        counter++;
                    event.preventDefault();
                    var elementToFocus = element.find('input')[counter] || element.find('button')[1];
                    console.log(elementToFocus.type);
                    if(angular.isDefined(elementToFocus))
                        elementToFocus.focus();
                    if (elementToFocus.type === 'button'){
                        counter = -1;
                        elementToFocus.bind("keydown keypress", function (eventSubmit) {
                            if(eventSubmit.which === 13) {
                                console.log('submit');
                            }
                        });
                    }
                }
            });
        };

但我有一个麻烦,如果我在按钮上,然后点击输入我得到:

Uncaught TypeError: undefined is not a function

但为什么呢?如何进入点击提交表格?不依赖于控制器?

2 个答案:

答案 0 :(得分:2)

尝试使用angular.element(elementToFocus).bind作为Uncaught TypeError。

关于你的新评论:

如果在控制器中定义了

$scope.registerUser = function() {
    ...
}

然后只需通过

在指令中调用它
elementToFocus.bind("keydown keypress", function (eventSubmit) {
    if(eventSubmit.which === 13) {
        scope.registerUser();
    }
});

作为一种猜测,您可以执行以下操作:检查 attrs 参数以获取'data-ng-click'的值并调用相应的函数:

elementToFocus.bind("keydown keypress", function (eventSubmit) {
    if(eventSubmit.which === 13) {
        if (attrs.dataNgClick == "registerUser()" {
            scope.registerUser();
        }
        else if (attrs.dataNgClick == "sign()" {
            scope.sign();
        }
        else if (attrs.dataNgClick == "frgtPassword()" {
            scope.frgtPassword();
        }
    }
});

答案 1 :(得分:1)

此行为已在Web技术中定义。当您在表单中按Enter时,它将被提交。为此,您需要处理正确的事件(ng-submit)。您可以使用更少的代码来实现您正在寻找的效果。

angular.module('app', [])
.controller('MyCtrl', function () {
  var self = this;
  self.message = "press ENTER to submit"; 
  self.count = 0; 
  this.onSubmit = function () {
    self.count++;
    self.message = "form submitted " + self.count + " times";
  };
});
<!DOCTYPE html>
<html ng-app="app">

  <head>
    <script data-require="angular.js@*" data-semver="1.4.0-beta.1" src="https://code.angularjs.org/1.4.0-beta.1/angular.js"></script>
    <link rel="stylesheet" href="style.css" />
    <script src="script.js"></script>
  </head>

  <body ng-controller="MyCtrl as ctrl">
    <h1>Hello Stack Overflow!</h1>
    <form ng-submit="ctrl.onSubmit()">
      <input type="text" placeholder="press ENTER"/>
      <input type="text" placeholder="press ENTER"/>
      <input type="submit" value="Send" />
    </form>
    <div>{{ctrl.message}}</div>
  </body>

</html>