<html><body><h1>JavaScript ES5 对象 defineProperty() 方法</h1><p>可以通过 Object.defineProperty(object, property, {value : value}) 方法修改属性</p><p id="demo"></p><script>const person = { firstName: "Bill", lastName : "Gates", language : "EN"};// 修改属性Object.defineProperty(person, "language", {value : "NO"});// 打印document.getElementById("demo").innerHTML = "当前对象为：" + JSON.stringify( person );</script></body></html>