typescript 带有函数类型的TS接口

Posted 2021-05-20

interface DoubleValueFunc{
	(number1: number, number2:number):number;
}

let myDoubleFunction: DoubleValueFunc;
myDoubleFunction = function(a: number, b:number){
	return (a + b )*2;
}

console.log(myDoubleFunction(10, 20)); //60