'use strict'; class Animal { constructor(name) { this.name = name; } } class Cat extends Animal{ constructor(name){ super(name); }
say(){ return ('Hello, '+ this.name+'!');}
}
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米yu言
'use strict'; class Animal { constructor(name) { this.name = name; } } class Cat extends Animal{ constructor(name){ super(name); }
say(){ return ('Hello, '+ this.name+'!');}
}