console
function writeDocument(variable) {
document.write(variable + "<br/>");
}
writeDocument("生成随机验证码--------------------------");
function generateVerifyCode(length){
var strValue="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
var code="";
for(var i=0;i<length;++i){
var randomIndex=Math.floor(Math.random()*strValue.length);
code+=strValue.charAt(randomIndex);
}
return code;
}
writeDocument(generateVerifyCode(4));
writeDocument(generateVerifyCode(5));
writeDocument(generateVerifyCode(6));
writeDocument("用Math的方法找出3, 9, 12, 99, 45, 78中的最大值和最小值-------------");
var a=Math.max(3, 9, 12, 99, 45, 78);
var b=Math.min(3, 9, 12, 99, 45, 78);
document.write("最大值为："+a+"<br/>");
document.write("最小值为："+b+"<br/>");
writeDocument("请随机生成一个颜色值rgb(X, Y, Z)的函数,其中X，Y，Z表示的是0~255的数字------------");
function getClo(){
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;
}
writeDocument(getClo());
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
</head>
<body>
<script>
</script>
</body>
</html>