如何生成两个不同的随机数？

您可以

while

// All numbers are equalvar numberOne = 3; var numberTwo = 3; var numberThree = 3;// run this loop until numberOne is different than numberThreedo {    numberOne = Math.floor(Math.random() * 4);} while(numberOne === numberThree);// run this loop until numberTwo is different than numberThree and numberonedo {    numberTwo = Math.floor(Math.random() * 4);} while(numberTwo === numberThree || numberTwo === numberOne);

这是基于@
jfriend00的建议http://jsfiddle.net/x4g4kkwc/1的带有上面代码的jsfiddle
。

这是原始的工作演示：http :
//jsfiddle.net/x4g4kkwc/