目錄1.定義2.TypeScript 類型模板3.為對象動態(tài)添加屬性3.1 解決方法3.2 對象作為參數(shù)傳遞3.3 方法返回對象3.4 對象數(shù)組總結(jié)1.定義

TypeScript 對象是包含一組鍵值對的實(shí)例。 值可以是標(biāo)量、函數(shù)、數(shù)組、對象等，如下實(shí)例：

var object_name = { key1: 'value1', // 標(biāo)量 key2: 'value', key3: function() {// 函數(shù) }, key4:['content1', 'content2'] //集合}//訪問對象object_name.key1// value1object_name.key4// ['content1', 'content2']2.TypeScript 類型模板var sites = { site1: '', site2: 0, sayHello: function () { } // 類型模板};sites.site1 = 'site1'sites.site2 = 2sites.sayHello = function () { console.log('hello ' + sites.site1 + sites.site2);};sites.sayHello();// hello site1 23.為對象動態(tài)添加屬性

如果我們使用以上的方法定義對象是無法做到為對象動態(tài)添加屬性

let people = { name: 'hwm', age: 18, sayHello: ()=> {}}people.sex = 'man'

以上代碼會報錯：

3.1 解決方法

定義一個包含數(shù)組屬性的接口，讓對象實(shí)現(xiàn)該接口

interface obj { [idx: string]: any}let people: obj = {}people.name = 'hwm'people.age = 18console.log(people)// { name: 'hwm', age: 18 }3.2 對象作為參數(shù)傳遞

方法一：

private ParamObj(objT: {name: string, age: number}) { let people = objT console.log(objT)}let people = {name: 'hwm', age: 18}this.ParamObj(people)// {name: 'hwm', age: 18}

方法二：

interface obj { [idx: string]: any}private ParamObj(objT: obj) { let people = objT console.log(objT)}let people:obj = {}people.name = 'lll'people.age = 20this.ParamObj(people)// {name: 'lll', age: 20}3.3 方法返回對象private ReturnObj(): {name: string, age: number}{ let people = {name: 'hwm', age: 18} return people}let res = this.ReturnObj()console.log(res)// {name: 'hwm', age: 18}3.4 對象數(shù)組let tbl: {<!--{C}%3C!%2D%2D%20%2D%2D%3E-->name: string, age: number}[] = []總結(jié)

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