在每种情况下生成 5 位数字的 JavaScript 表达式

Question

for my selenium tests I need an value provider to get a 5-digit number in every case. The problem with javascript is that the api of Math.random only supports the generation of an 0. starting float. So it has to be between 10000 and 99999 .

So it would be easy if it would only generates 0.10000 and higher, but it also generates 0.01000 . So this approach doesn't succeed:

Math.floor(Math.random()*100000+1)

Is it possible to generate a 5-digit number in every case (in an expression!) ?

Answer 1

关于什么：

Math.floor(Math.random()*90000) + 10000;

Answer 2

Yes, you can create random numbers in any given range:

var min = 10000;
var max = 99999;
var num = Math.floor(Math.random() * (max - min + 1)) + min;

Or simplified:

var num = Math.floor(Math.random() * 90000) + 10000;

Answer 3

如果你想生成一个邮政编码，并且不介意前导零，只要它是 5 位数字，你可以使用：

(""+Math.random()).substring(2,7)

Answer 4

What about this?

 var generateRandomNDigits = (n) => { return Math.floor(Math.random() * (9 * (Math.pow(10, n)))) + (Math.pow(10, n)); } generateRandomNDigits(5)

Answer 5

You can get a random integer inclusive of any given min and max numbers using the following function:

function getRandomIntInclusive(min, max) {
  min = Math.ceil(min);
  max = Math.floor(max);
  return Math.floor(Math.random() * (max - min + 1)) + min;
}

For more examples and other use cases, checkout the Math.random MDN documentation .