<script>
    function randomHexColor() {
        //随机生成十六进制颜色
        var hex = Math.floor(Math.random() * 16777216).toString(16);
        //生成ffffff以内16进制数
        while (hex.length < 6) {
            //while循环判断hex位数,少于6位前面加0凑够6位
            hex = '0' + hex;
        }
        return '#' + hex; //返回‘#'开头16进制颜色
    }
    setInterval(() => {
        let h = randomHexColor();
        console.log(h)
    },1200)
</script>