AngularJS：触发NG-变化，NG-KEYUP或$ $范围手表在撰写韩文字符 [英] AngularJS: trigger ng-change, ng-keyup or $scope.$watch while composing Korean characters
问题描述
我建立一个韩国的词汇训练，我想用户输入的比较结果为人民类型。
在韩国和其他一些亚洲语言，您撰写多KEYUP事件字母。在Chrome中，$范围。$手表，NG-KEYUP和NG-变化仅被触发后，这封信已完全组成以及一个新的字母或输入空格。我不介意AngularJS不会触发任何东西，直到最后一个字母已经完全组成，但一旦这封信已经完成，应该无需再添加一个空格或启动下一个字触发。
HTML
＆LT;表格名称=forms.vocabularyForm＆GT;
＆LT;输入名称=回答ID =答案NG-模式=vocabularyCtrl.answerNG变化=vocabularyCtrl.checkChange（）NG-KEYUP =vocabularyCtrl.checkKeyUp（$事件）TYPE =文本/＆GT;
＆LT; /表及GT;
控制器：
.controller（'VocabularyCtrl'，[
'$范围'，
'$位置'，
功能（$范围，$位置）{ this.checkChange =功能（）{
的console.log（回答的变化：+ this.answer）;
}; this.checkKeyUp =功能（$事件）{
的console.log（回答KEYUP：+ this.answer）;
}; $范围。$腕表（'vocabularyCtrl.answer'，函数（answerNew，answerOld）{
的console.log（'answerOld：'+ answerOld +'，answerNew：'+ answerNew）;
}，真正的）; };
]）;
例如：
输入：ㄱ
安慰：
answerOld：，answerNew：
回答KEYUP：输入：가
安慰：
answerOld：，answerNew：
回答KEYUP：输入：감（字符现已全面组成）
安慰：
answerOld：，answerNew：
回答KEYUP：输入：감ㅅ（开始下一个字符，相同的行为与空格键）
安慰：
answerOld：감，answerNew：
回答变化：감
回答KEYUP：감
正如角队的一个有用的成员解释，所有触发器都有意在撰写文字pssed燮$ P $。更多细节这里。
的建议，我创建在撰写字符手动更新模型的自定义指令：
指令：
（函数（）{
使用严格的; angular.module（'对myApp'，[]） //角的NG-变化，NG-KEYUP和$范围。$手表不被触发
//而组成（例如书写韩文音节时）。
//参见：https://github.com/angular/angular.js/issues/10588
//这个自定义指令使用element.on（'输入'）代替，它得到
//而撰写触发。
.directive（'cstInput'，函数（）{
返回{
限制：'A'，
要求：'^ ngModel'，
范围： {
ngModel：'='，//同步模式
}，
链接：功能（范围，元素，ATTRS，ngModel）{
element.on（'输入'，函数（）{
scope.ngModel = element.val（）;
}）;
}
};
}）;
}）（）;
控制器：（由ippi建议）
$范围。$腕表（'quizzesCtrl.answer'，函数（回答）{
的console.log（答案）;
}）;
HTML
＆LT;形式NG控制器=QuizzesController为quizzesCtrl＆GT;
＆LT;输入CST-输入名称=回答ID =答案NG-模式=quizzesCtrl.answer类型=文本/＆GT;
＆LT; /表及GT;
更新
我不得不把code更改为以下，使其工作在Firefox（Chrome浏览器和Safari浏览器工作正常与上面的code）
。指令：
（函数（）{
使用严格的; angular.module（'对myApp'，[]） //角的NG-变化，NG-KEYUP和$范围。$手表不被触发
//而组成（例如书写韩文音节时）。
//参见：https://github.com/angular/angular.js/issues/10588
//这个自定义指令使用element.on（'输入'）代替，它得到
//而撰写触发。
.directive（'cstInput'，函数（）{
返回{
限制：'A'，
要求：'^ ngModel'，
链接：功能（范围，元素，ATTRS，ngModel）{
element.on（'输入'，函数（）{
范围。$应用（函数（）{
scope.ngModel = element.val（）;
。范围$的eval（attrs.cstInput，{'答案'：scope.ngModel}）; //只有在没有范围已在指令被定义工作
}）;
}）;
}
};
}）;}）（）;
控制器：
this.checkAnswer =功能（回答）{
如果（回答=== this.quiz.answer）{
this.isCorrect = TRUE;
}
};
HTML（请注意，任何参数传递需要CST-输入回调上市）：
＆LT;形式NG控制器=QuizzesController为quizzesCtrl＆GT;
＆LT;输入CST-输入=quizzesCtrl.checkAnswer（回答）NG模型=quizzesCtrl.answerNAME =答案ID =答案类型=文本/＆GT;
＆LT; /表及GT;
I'm building a Korean vocabulary trainer and I want to compare user input as people type.
In Korean and some other Asian languages, you compose letters with multiple keyup events. In Chrome, $scope.$watch, ng-keyup and ng-change only get triggered after the letter has been fully composed and either a new letter or a space has been entered. I don't mind AngularJS not triggering anything until the last letter has been fully composed but once the letter has been completed, it should trigger without having to add a whitespace or starting the next word.
HTML:
<form name="forms.vocabularyForm">
<input name="answer" id="answer" ng-model="vocabularyCtrl.answer" ng-change="vocabularyCtrl.checkChange()" ng-keyup="vocabularyCtrl.checkKeyUp($event)" type="text" />
</form>
Controller:
.controller('VocabularyCtrl', [
'$scope',
'$location',
function($scope, $location) {
this.checkChange = function () {
console.log("answer change: " + this.answer);
};
this.checkKeyUp = function ($event) {
console.log("answer keyUp: " + this.answer);
};
$scope.$watch('vocabularyCtrl.answer', function (answerNew, answerOld) {
console.log('answerOld: ' + answerOld + ', answerNew: ' + answerNew);
}, true);
};
]);
Example:
Input: ㄱ
Console:
answerOld: , answerNew:
answer keyUp:
Input: 가
Console:
answerOld: , answerNew:
answer keyUp:
Input: 감 (character is now fully composed)
Console:
answerOld: , answerNew:
answer keyUp:
Input: 감ㅅ (starting the next character, same behaviour with space bar)
Console:
answerOld: 감, answerNew:
answer change: 감
answer keyUp: 감
As explained by a helpful member of the Angular team, all triggers are intentionally suppressed while composing characters. More details here.
As suggested, I created a custom directive that manually updates the model while composing characters:
Directive:
(function() {
'use strict';
angular.module('myApp', [])
// Angular's ng-change, ng-keyup and $scope.$watch don't get triggered
// while composing (e.g. when writing Korean syllables).
// See: https://github.com/angular/angular.js/issues/10588
// This custom directive uses element.on('input') instead, which gets
// triggered while composing.
.directive('cstInput', function() {
return {
restrict: 'A',
require: '^ngModel',
scope: {
ngModel: '=', // sync model
},
link: function (scope, element, attrs, ngModel) {
element.on('input', function() {
scope.ngModel = element.val();
});
}
};
});
})();
Controller: (as suggested by ippi)
$scope.$watch('quizzesCtrl.answer', function (answer) {
console.log(answer);
});
HTML:
<form ng-controller="QuizzesController as quizzesCtrl">
<input cst-input name="answer" id="answer" ng-model="quizzesCtrl.answer" type="text" />
</form>
Update
I had to change the code to the following to make it work in FireFox (Chrome & Safari work fine with the code above).
Directive:
(function() {
'use strict';
angular.module('myApp', [])
// Angular's ng-change, ng-keyup and $scope.$watch don't get triggered
// while composing (e.g. when writing Korean syllables).
// See: https://github.com/angular/angular.js/issues/10588
// This custom directive uses element.on('input') instead, which gets
// triggered while composing.
.directive('cstInput', function() {
return {
restrict: 'A',
require: '^ngModel',
link: function (scope, element, attrs, ngModel) {
element.on('input', function() {
scope.$apply(function(){
scope.ngModel = element.val();
scope.$eval(attrs.cstInput, {'answer': scope.ngModel}); // only works if no scope has been defined in directive
});
});
}
};
});
})();
Controller:
this.checkAnswer = function (answer) {
if (answer === this.quiz.answer) {
this.isCorrect = true;
}
};
HTML (note that any passed in argument needs to be listed in cst-input-callback):
<form ng-controller="QuizzesController as quizzesCtrl">
<input cst-input="quizzesCtrl.checkAnswer(answer)" ng-model="quizzesCtrl.answer" name="answer" id="answer" type="text" />
</form>
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