JavaScript 代码延时sleep()以及时间格式化

sleep():

function sleep(time) {
    return new Promise((resolve) => setTimeout(resolve, time));
}

async function solve() {
    for (var i = 0; i < 10; i++) {
        //...
        console.log("--i--", i);
        await sleep(1000);
    }
}

solve()

时间格式化:

function dateFormat(fmt, date) {
    let ret;
    const opt = {
        "Y+": date.getFullYear().toString(),
        "m+": (date.getMonth() + 1).toString(),
        "d+": date.getDate().toString(),
        "H+": date.getHours().toString(),
        "M+": date.getMinutes().toString(),
        "S+": date.getSeconds().toString()
    };
    for (let k in opt) {
        ret = new RegExp("(" + k + ")").exec(fmt);
        if (ret) {
            fmt = fmt.replace(ret[1], (ret[1].length == 1) ? (opt[k]) : (opt[k].padStart(ret[1].length, "0")))
        };
    };
    return fmt;
}

...
let t=dateFormat("YYYY-mm-dd HH:MM:SS", new Date(timestamp * 1000));

html中对class进行添加删除字段:

View.classList.add("animate__fadeIn")
View.classList.remove("animate__bounceOutDown")