[JavaScript知识库]TS泛型-

(()=>{
    function getArr1(value:number,count:number):number[]{
        const arr:number[] = []
        for(let i = 0 ;i<count;i++){
            arr.push(value)
        }
        return arr;
    }
    const arr1 = getArr1(100.123,3)
    console.log(arr1[0].toFixed(2));
    
    function getArr2(value:string ,count:number):string []{
        const arr:string [] = []
        for(let i = 0 ;i<count;i++){
            arr.push(value)
        }
        return arr;
    }
    const arr2 = getArr2("我循环",3)
    console.log(arr2);
    
    function getArr3<T>(value:T,count:number):T[]{
        const arr:T[] = []
        for(let i = 0;i<count;i++){
            arr.push(value)
        }
        return arr;
    }
    const a1 = getArr3<number>(100.123,3)
    const a2 = getArr3<string>("我也循环",3)
    console.log(a1[0].toFixed(2));
    console.log(a2[0].split(""));
    
    
})()