此方法返回0(含)和1(不包括)之間的隨機數
語法
Math.random() ;
下面是參數的詳細信息:
返回值:
例子:
<html> <head> <title>JavaScript Math random() Method</title> </head> <body> <script type="text/javascript"> var value = Math.random( ); document.write("First Test Value : " + value ); var value = Math.random( ); document.write("<br />Second Test Value : " + value ); var value = Math.random( ); document.write("<br />Third Test Value : " + value ); var value = Math.random( ); document.write("<br />Fourth Test Value : " + value ); </script> </body> </html>
這將產生以下結果:
First Test Value : 0.28182050319352636 Second Test Value : 0.6375786089661319 Third Test Value : 0.6780129774072902 Fourth Test Value : 0.7310958163154001