console 命令行工具 X clear

console

for(let i=1; i<10; i++){//横项
    for (let y=1; y<=i; y++){
        let x=y*i;
        document.write(y+"*"+i+"="+x+"&nbsp;&nbsp;"
        )
    }
    document.write("</br>")
}

<doby>  
    <p><div class="name">九九乘法表</div> </p>
</doby>

.name{
    color: red;
    text-align: center;
}