js基础-对象Math

    console.log(Math.ceil(25.3));
    console.log(Math.ceil(-25.3));


    // Math.floor向下取整
    console.log(Math.floor(25.3));
    console.log(Math.floor(-25.3));


    // Math.round四舍五入
    console.log(Math.round(25.45));
    console.log(Math.round(-25.9));



    // Math.random随机数0-1之间
    console.log(Math.random());
    // Math.random()*(max-min)+min;