对象Object// 2种写法 let person { // 多个属性之间用“,” name : LiHua, song : function (x, y) { console.log(Test is ${x y}) } } // 1. person.name // 2. person[name] (遍历会常用此写法) person.song(1, 2)对象属性是无序的因此不能使用数组的方法遍历。新的方法为let obj { uName : Placo, age : 18, gender : male } forlet k in obj{ console.log(k) // 数组下标索引号为字符串类型 console.log() }案例!DOCTYPE html html langen head meta charsetUTF-8 meta nameviewport contentwidthdevice-width, initial-scale1.0 titleDocument/title style table { border: 1px solid rgb(157, 8, 216); border-collapse: collapse; } td { border: 1px solid rgb(193, 8, 230); padding: 5px; text-align: center; } /style /head body table caption学生信息/caption tr td姓名/td td年龄/td td性别/td tdID/td /tr script let students [ { name: Alice, age: 20, sex: 女, id: 1001 }, { name: Bob, age: 22, sex: 男, id: 1002 }, { name: Charlie, age: 21, sex: 男, id: 1003 }, { name: David, age: 23, sex: 男, id: 1004 }, ] for (let i 0; i students.length; i) { document.write( tr td${students[i].name}/td td${students[i].age}/td td${students[i].sex}/td td${students[i].id}/td /tr ) } /script /table /body /html