I want to transfer focus to the next textaera with the Enter key and to the previous textarea with the Backspace key.

Asked 2 months ago, Updated 2 months ago, 5 views

It's just as the title says.Let me ask you a question.We have created a textarea directive that corresponds to the focus movement with the Enter and Backspace keys.
After typing in textarea, press Enter to save the item and move focus to the next element, and press Backspace only when textarea is empty to save the item and move focus to the previous element, but I'm sorry for the confusing code, but I appreciate your cooperation.

ul.section-list ng-repeat="content in shop.contents"
  li.section ng-repeat="item in content.items"
    div
      textarea name="body"my-directive="ng-model="item.body"ng-blur="itemSave(shop, content, item)" 
angular.module('myDirective', [ ]).directive'myDirective', ->
  {
    restrict: 'A'
    require: '?ngModel'
    link:(scope, element, attrs, ngModel) ->
      el=angular.element(element[0])

      el.on 'keypress', (e)->
        if.keyCode==13# When Enter is pressed
          el.blur()
          # I want to confirm with Enter and move on to the next element...
          angular.element(element[0+1]).focus()# error
          return
        return

      el.on 'keydown', (e)->
        if.keyCode==8#Backspace key pressed
          If scope.content.items [scope.$index].body=='#textarea is empty
            el.blur()
            # I want to confirm the Backspace key and move on to the previous element...
            angular.element(element[0]).focus()# error
            return
          return
        return
  }

javascript angularjs coffeescript

2022-09-30 14:18

1 Answers

When working with directives in parallel, having a parent directive works.
https://jsfiddle.net/4c1t7v42/

Incidentally, the second argument for link() is the angular.element object, so
varel=angular.element(em[0]);
You do not need to do anything like .

 angular.module('app', [])
.controller('AppController', function(){
  this.items = ['aaa', 'bbb', 'ccc', 'ddd' ];
})
.directive('parent', function(){
  US>return{
    restrict: 'AE',
    translate: true,
    template: '<ng-transclude></ng-transclude>',
    scope: {
    },
    controller:function($scope){
      varchildren=[];
      This.addChild=function(em){
        children.push(em);
      };
      This.removeChild=function(em){
        var index=children.indexOf(em);
        if(index!==-1){
          children.splice(index,1);
        }
      }
      This.next=function(em){
        var index=children.indexOf(em);
        if(index!==-1){
          children [(index+1)%children.length].focus();
        }
      };
      This.prev=function(em){
        var index=children.indexOf(em);
        if(index!==-1){
          children [(index+children.length-1)%children.length].focus();
        }
      };
    },
  };
})
.directive('child', function(){
  function save(em){
    // CODE FOR STORAGE
  }

  US>return{
    require: '^^parent',
    restrict: 'A',
    scope: {
    },
    link: function(scope, elem, attrs, parent) {
      parent.addChild(elem);
      scope.$on('$destroy', function(){
        parent.removeChild(em);
      });
      em.on('keypress', function(e){
        if(e.keyCode===13){
          save(em);
          parent.next(em);
          return false;
        }
      });
      em.on('keydown', function(e){
        if(e.keyCode===8&elem.val().length===0){
          save(em);
          parent.prev(em);
          return false;
        }
      });
    }
  };
});
<script src="https://code.jquery.com/jquery-2.1.4.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.6/angular.min.js"></script>

<div ng-app="app"ng-controller="AppController as app">
  <ul parent>
    <ling-repeat="item in app.items">
      <textarea child ng-model="item" cols="30" rows="10">/textarea>
    </li>
  </ul>
</div>


2022-09-30 14:18

If you have any answers or tips


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