| export default {} |
| |
| |
| function add(a: number, b: number) { |
| return a + b; |
| } |
| |
| add(10, 20); |
| |
| |
| function add2(a: string, b: string) { |
| return a + b; |
| } |
| add2("我的女神是: ", "邱淑贞"); |
| |
| |
| function add3(a: string | number, b: string | number) { |
| |
| if( typeof a == "number" && typeof b =="number" ) { |
| return a + b; |
| } |
| if( typeof a == "string" && typeof b =="string" ) { |
| return a + b; |
| } |
| if( typeof a == "string" && typeof b =="number" ) { |
| return a + b; |
| } |
| if( typeof a == "number" && typeof b =="string" ) { |
| return a + b; |
| } |
| } |
| |
| add3(10, 20); |
| add3("邱淑贞", "景甜"); |
| add3(10, "孟子义"); |
| add3("杨紫", 20); |
| |
| |
| |
| function addFunc(a: number, b: number):number; |
| function addFunc(a: string, b: string):string; |
| function addFunc(a: string, b: number):string; |
| function addFunc(a: number, b: string):string; |
| |
| function addFunc(a: any, b: any): any { |
| return a + b; |
| } |
| |
| addFunc(10, 20); |
| addFunc("邱淑贞", "景甜"); |
| addFunc(10, "孟子义"); |
| let res = addFunc("杨紫", 20); |
| console.log(res); |
| |
| |
| |
| function star(s1: string): void; |
| function star(n1:number, s1: string): void; |
| |
| |
| function star(x: any, y?:any): void { |
| console.log(x); |
| console.log(y); |
| |
| } |
| |
| star("王心凌"); |
| star("爱你"); |
| star(1, "爱你"); |
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