SOURCE

// js 每隔一秒打印 1,2,3,4,5
function solution(){
    let i = 0
    let t = setInterval(()=>{
        i++
        console.log(i)
        if(i===5) clearInterval(t)
    },1000)
}

function solution1(){
    for(let i = 1; i<=5; i++){
        setTimeout(()=>{
            console.log(i)
        }, i*1000)
    }
}

solution()