JS Math random Number

#2015-8-12

# #Math随机数


###**1**. JS random number (Don't ask me why, Baidu also don't know, Baidu latest version)

var rand
= (function () {
var today
= new Date ();
var seed
= Today.gettime ();
function rnd () {
Seed
= (Seed * 9301 + 49297)% 233280;
Return seed
/(233280.0);
};
return function rand (number) {
Return Math.ceil (Rnd (Seed)
* number);
};
})();

Console.log (rand (100))
Console.log (rand (100))
Console.log (rand (100))

# # #2. JS Math generates random numbers

function ext (min, max) {
Return Math.floor (min + math.random () * (max-min));
(Var random=ext (number of 1-n))//Here's ext for the above defined method
# # #3. JS link the final style sheet; Use this later (the code word is too long, do not know the meaning)

Alert (Document.defaultView.getComputedStyle (ev,null). BackgroundColor)

# # #4. The canvas gets the ID of the HTML and mixes the 2d parameters (Canvas essentials)

Canvas = document.getElementById ("CANVAS1")//Get ID Object
CXT = Canvas.getcontext (' 2d ')//adding 2d Parameters

JS Math random Number