ts 属性接口

ts 属性接口就是对象的约束

例如：

interface FullName {

firstName: string;

secondName: string;

}

function printName(name: FullName) {

console.log(name.firstName + "--" + name.secondName);

}

//printName('123');错误

 

//接口的可选属性 在冒号前加？表示可选课不选

interface FullName2 {

fistName: string;

secondName?: string;

}

function getName(name: FullName2) {

console.log(name);

}

getName({ fistName: "zheng", secondName: "haixin" });