typescript数组篇章

let nums=[];
//初始化元组
function nucity(addfromname:any){
    if (typeof addfromname===null||typeof addfromname==="undefined"){
        return;
    } else {
        nums.push(addfromname);
    }
}
//单条数据删除
function removes() {
    if(nums.length<=0) {
        console.log('删除失败!');
    } else {
        nums.splice(0,1);
        console.log(nums.length);
    }
}
//新增新的数据
function namethods(index:number,addnamety:any) {
//    首先传入要修改的下标
    if(index<0){
        console.log('错误下标');
    } else {
        nums.push(addnamety)
        console.log(nums)
    }
}
nucity('张三');
removes();
namethods(1,'李四')