// object：object function array 

/**
 * 对象语法
 * {属性名：类型,属性名？：类型...}
 */
// ？ 代表属性可选 添加到属性名后
// [propName:string]:any 在当前对象后添加任意个数的任意类型的任意数据
let a:{name:string,age?:number,[propName:string]:any};
a = {
    name:"孙悟空",
    age: 20
}
a = {
    name:"猪八戒"
}
a = {
    name:"孙悟空",
    age: 20,
    sex: "男",
    hobby: "吃仙丹"
}
/**
 * 函数语法
 * (形参：类型,形参：类型,形参：类型,) => 返回值类型
 */
let b:(name:string,age:number) => string;
b = function(name:string,age:number):string {
    return name + age;
}
console.log(b('11',2))
export{};