標籤：charset 執行個體 set meta -- style back 方法 pre
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title></title></head><body><script> function Person(name, age, sex) { this.name = name; this.age = age; this.sex = sex; this.eat = function () { console.log(this.name + "在吃飯"); } } Person.prototype.run = function () { console.log(this.name + "在跑步"); }; Person.prototype.age = 19; var per = new Person("Andy", 18, "男"); console.log(per.age);//18 per.run(); /* * 執行個體對象使用屬性和方法時，先在當前物件查詢，查詢到直接使用，如果查詢不到則去原型對象中尋找，如果還是查詢不到則報錯 * */</script></body></html>
JS進階----------------->原型中使用屬性跟方法的時候是怎樣進行尋找的
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