SOURCE

function writeDocument(variable){
document.write(variable + "<br/>");
}

writeDocument("最大值最小值---------")
writeDocument("最大值："+Math.max(1,3,9,19,999));
writeDocument("最小值："+Math.min(1,3,9,19,999));

writeDocument("生成随机验证码----------")

function generateVerifyCode(length){
var strLetterNumber = "0123456789ABCDEFGHIJKLMNOPQRST";
var code = "";
for(var i=0;i<length;++i){
var randomNumber =Math.floor(Math.random()*strLetterNumber.length);
code = code+strLetterNumber.charAt(randomNumber);
}
return code;
}

writeDocument(generateVerifyCode(4));
writeDocument(generateVerifyCode(5));
writeDocument(generateVerifyCode(6));

writeDocument("生成随机的颜色 rgb(255,255,255)----------")
function getRandomColor(){
var r=Math.floor(Math.random()*(255+1));
var g=Math.floor(Math.random()*(255+1));
var b=Math.floor(Math.random()*(255+1));
var rgb="rgb("+r+","+g+","+b+")";
return rgb;
}
document.write(getRandomColor());
耀耀:
function writeDocument(variable){
document.write(variable + "<br/>");
}
document.write('定义一个时间对象----------------<br/>');
var oToday = new Date();
document.write(oToday + "<br/>");

document.write('获取时间对象的年，月，日，时，分，秒----------------<br/>');
document.write("年："+oToday.getFullYear() + "<br/>");
document.write("月："+(oToday.getMonth()+1) + "<br/>");
document.write("日："+oToday.getDate() + "<br/>");
document.write("时："+oToday.getHours() + "<br/>");
document.write("分："+oToday.getMinutes() + "<br/>");
document.write("秒："+oToday.getSeconds() + "<br/>");

document.write('设置时间对象的年，月，日，时，分，秒（2019-6-1 15:59:59:99）---------<br/>');
var oMyBirthday = new Date();
oMyBirthday.setFullYear(2019);
oMyBirthday.setMonth(6);
oMyBirthday.setDate(1);
oMyBirthday.setHours(15);
oMyBirthday.setMinutes(59);
oMyBirthday.setSeconds(59,99);
document.write(oMyBirthday + "<br/>");

document.write('获取星期几-------------<br/>');
document.write("今天是星期"+oToday.getDate() + "<br/>");

var week =["星期天","星期一","星期二","星期三","星期四","星期五","星期六"];

document.write("今天是"+week[oToday.getDay()] + "<br/>");

document.write("请你打印" + "<br/>");