如何在html标签内，生成随机数？

Question

我想让标签内的<img src="num.jpg">内的num是随机数，以便每次都能链接到不同的图片。

Answer 1

Use JS to find random numbers,

Random number formula: Math.random()*(max-min) min

Example, find 0-10 Find a random integer between 10-20; Find a random integer between 20 and 30; Find a random integer between 7 and 91

function geta(max,min){ Function

var random =Math.random()*(max-min) min; // Find the formula for random numbers       ​ ​ random = Math.floor(random); ​ ​ ​ ​ // Round down (remove decimals directly) Document.write (random "& lt; hr/& gt;"); // output results } geta(0,10); geta(10,20); geta(20,30); geta(7,91);

Answer 2

Use JS to find random numbers,

Random number formula: Math.random()*(max-min) min

Answer 3

How to generate random numbers in html tags? -PHP Chinese website Q&A-How to generate random numbers in html tags? -PHP Chinese website Q&A

Let’s take a look and learn.

Answer 4

你这图片显示随机数，你能确保任何数字都能有个图片在服务器上面吗，所以你这个随机数应该是有个范围在，或者说，定义一个集合，里面放所有图片随机数，

var imageNums = [123,221,32];
function getImageNum(numArray){
    var index = Math.获取随机数，范围是数组下标范围内;
    return numArray[index];
}