摘要：1.原型 原型体现 let arr = [] //new Array console.log(arr.__proto__ == Array.prototype); //true //同理，也适用{}-Object、“”-string、123-number、true-Boolean、/a/i - Re 阅读全文

摘要：1.函数编程与面向对象的实例对比 let user = { name: "XJ", grade: [ {name: "js", score: 99}, {name: "css", score: 88}, ], average() { let total = this.grade.reduce((t, 阅读全文