把 this._class = 'ActionTransfer' 改为 this._class = this.constructor.name,这才是标准写法,不知道为何ActionTranfer用了字符串。
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@ -1,9 +1,9 @@
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const Action = require('./Action.js')
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const DAD = module.exports = function ActionTransfer (prop) {
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this._class = 'ActionTransfer'
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this._class = this.constructor.name
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this.setProp(prop) // 没有定义 ActionTransfer.prototype._model,因此继承了上级Action.prototype._model,因此通过this.setProp,继承了上级Action定义的实例自有数据。另一个方案是,调用 Action.call(this, prop)
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this.type = 'ActionTransfer'
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this.type = this.constructor.name
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}
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DAD.__proto__ = Action
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const MOM = DAD.prototype
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