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Update article.md #1200

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Update article.md 
把容量范围（#waterLimited）和当前水量（#waterAmount）分开，是不是更清晰一些。
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@Zcper
Zcper authored Mar 14, 2024
commit 80b4ce2581625efdebbd2425100beec04bf02714
8 changes: 7 additions & 1 deletion 1-js/09-classes/04-private-protected-properties-methods/article.md
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Expand Up @@ -198,20 +198,26 @@ new CoffeeMachine().setWaterAmount(100);
class CoffeeMachine {
*!*
#waterLimit = 200;
#waterAmount = 0;
*/!*

*!*
#fixWaterAmount(value) {
if (value < 0) return 0;
if (value > this.#waterLimit) return this.#waterLimit;
return value; // 在范围内的值直接返回
}
*/!*

setWaterAmount(value) {
this.#waterLimit = this.#fixWaterAmount(value);
this.#waterAmount = this.#fixWaterAmount(value);
}
}

getWaterAmount() {
return this.#waterAmount;
}

let coffeeMachine = new CoffeeMachine();

*!*
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