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AngularJS で半角から全角に変換する Directive を追加する

Last updated at Posted at 2015-05-23

AngularJS で全角から半角に変換する Directive を追加する の逆バージョンです。
JavaScript で Form の value に半角で入力された値を全角へ変換する関数を、AngularJS の Directive に書き換えてみた

JavaScript バージョン

inputタグ
<input name="phone" type="text" placeholder="09012345678" onchange="han2zen(this)">
zen2han.js
function han2zen(obj){
  // 文字列かチェック
  if(typeof(obj.value)!="string") return false;
  var word = obj.value;

  obj.value = word.replace(/[!"#$%&'()*+,\-.\/0-9:;<=>?@A-Z\[\\\]^_`a-z{|}~]/g, function(s) {
      return String.fromCharCode(s.charCodeAt(0) + 0xFEE0);    
  })
}

デモ

AngularJS Directive バージョン

inputタグ(ng-model無)
<input name="phone" type="text" placeholder="09012345678" convert-ascii-to-mb >
inputタグ(ng-model有)
<input name="phone" type="text" placeholder="09012345678" ng-model="phone" convert-ascii-to-mb >
app.js
angular
    .module('MyApp', [])
    // 英数字記号の半角文字を全角へ変換
    .directive('convertAsciiToMb', function () {
        return {
            restrict: 'A',
            require: '?ngModel',
            link: function (scope, element, attrs, ngModel) {
                element.on('change', function(){
                    if(typeof(this.value)!="string") return false;
                    var word = this.value;
                    word = word.replace(/[!"#$%&'()*+,\-.\/0-9:;<=>?@A-Z\[\\\]^_`a-z{|}~]/g, function(s) {
                        return String.fromCharCode(s.charCodeAt(0) + 0xFEE0);    
                    });
                    // ng-model への反映(これがないとフォームの値だけ更新され、ng-modelの値は更新されない)
                    if (ngModel != null) {
                        scope.$apply(function() {
                            ngModel.$setViewValue(word);
                        });
                    }
                    this.value = word;
                });
            }
        };
    })

デモ

参考
AngularJS で全角から半角に変換する Directive を追加する

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