# JJU_干干
代码:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>球</title> <!-- 球函数 --> <script type="text/javascript"> function Ball(){ var rw = prompt("请输入红白球个数:"); //输入 rw = parseInt(rw) && Number(rw) var wb = prompt("请输入白黑球个数:"); wb = parseInt(wb) && Number(wb) var rb = prompt("请输入红黑球个数:"); rb = parseInt(rb) && Number(rb); if(!isNaN(rw)&&!isNaN(wb)&&!isNaN(rb)){ var b = (wb-rw+rb)/2; var w = wb-b; var r = rw-w; var ball = [rw,wb,rb,w,r,b]; return ball }else{ alert("输入有误!") } } </script> </head> <body> <div> <!-- 三个输入框,通过 js 代码 显示 value属性--> <p> 红白球共:<input type="text" id="rw"> </p> <p> 白黑球共:<input type="text" id="wb"> </p> <p> 红黑球共:<input type="text" id="rb"> </p> <p> 白:<input type="text" id="w"> </p> <p> 红:<input type="text" id="r"> </p> <p> 黑:<input type="text" id="b"> </p> </div> <div> <script type="text/javascript"> // 调用Yuan()方法:输入半径,返回半径、周长和面积组成的数组 var ball = Ball(); document.getElementById('rw').value = ball[0]; document.getElementById('wb').value = ball[1]; document.getElementById('rb').value = ball[2]; document.getElementById('w').value = ball[3]; document.getElementById('r').value = ball[4]; document.getElementById('b').value = ball[5]; </script> </div> </body> </html>
运行结果: