javascript基礎執行個體:如何計算24點(3)

來源:互聯網
上載者:User
     n = document.forms[0].fd.value;
     if ( n[0] > 0 && n > 0 && n > 0 && n > 0 && n[0] < 14 && n < 14 && n < 14 && n < 14 )
     {
      log("<font size=5><b>"+n[0]+", "+n+", "+n+", "+n+"的24點答案:</b></font><br>");
      log("<input type='button' ><br>");
      funMain();
      if ( counter == 0 )
      {
       log("沒有答案!");
      }
     }
     else
     {
      alert("輸入錯誤!");
     }
    }
   
    //主程式
    function funMain()
    {
        var m = new Array();
     //四種運算子
        m[0] = "+";
        m = "-";
        m = "*";
        m = "/";
       
     //11種運算式
        var exp1 = "a m1 b m2 c m3 d;";
        var exp2 = "(a m1 b) m2 c m3 d;";
        var exp3 = "(a m1 b m2 c) m3 d;";
        var exp4 = "((a m1 b) m2 c) m3 d;";
        var exp5 = "(a m1 (b m2 c)) m3 d;";
        var exp6 = "a m1 (b m2 c) m3 d;";
        var exp7 = "a m1 (b m2 c m3 d);";
        var exp8 = "a m1 ((b m2 c) m3 d);";



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