Created
December 21, 2013 04:09
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ExtCore使うとJavascriptで簡単に継承をサポートしたクラスが定義できる ref: http://qiita.com/nasu_st/items/51408e762b00a773491f
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ClassA = Ext.extend( Ext.util.Observable , { //Ext.util.Observableクラスを基底クラスとしてClassAを宣言する。 | |
constructor: function(){ | |
//クラスがnewされた時に呼ばれる。 | |
ClassA.superclass.constructor.call( this ); | |
//親クラスのconstructorを呼ぶ。 | |
}, | |
alert : function( message ){ | |
alert( message ); | |
}, | |
showAlert : function(){ | |
this.alert( "Class A" ); | |
} | |
}); | |
ClassB = Ext.extend( ClassA ,{ | |
constructor: function(){ | |
ClassB.superclass.constructor.call( this );//Class Aのコンストラクタを実行 | |
}, | |
showAlert: function(){//overrideする。 | |
this.alert("Class B"); //Class Aのalertが呼ばれる。 | |
} | |
}); | |
Ext.onReady( function(){ | |
var classAButtonElement = Ext.get( "classA" ); | |
classAButtonElement.on( "click" , function(){ | |
var classA = new ClassA(); | |
classA.showAlert(); | |
} ); | |
var classBButtonElement = Ext.get( "classB" ); | |
classBButtonElement.on( "click" , function(){ | |
var classB = new ClassB(); | |
classB.showAlert(); | |
} ); | |
}); |
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