function randomNumber(x,y){ //returns a random number from an interval given
var z;
if (x>y) {z=x; x=y; y=z;} // turns the interval upside down if the numbers of the interval are entered in unconsecutive order
else if(x==y) {return x; break;} //if there's no interval but two same digits return the number entered
var randomNo = (y-x)*Math.random() + x; // the random value itself in float type
Math.round(randomNo); // round it to integer
}
function outcomeType(value){ //gives the type of hand-symbol in game for each player according to the random No given
var outcome;
if (value==1 || value==4){outcome="rock"} //value 1 or 4 gives rock, same way with other two...
else if(value==2) {outcome="paper"}
else {outcome="scissors"}
return outcome;
}
function result(x,y){ // compares the numbers so that a winner is decided
if(x>y){return 1} //player A wins
else if(x==y){return 0;} //draw
else {return 2} //player B wins
}
function game(){
var a=randomNumber(1,3); // random number for player A
var b=randomNumber(1,3);// random number for player B
if(a!=2 && b!=2 && a!=b){ //the case rock-scissors, rocks from 1 beecomes 4 in order to beat in result()
if(a>b){b=4}
else{a=4}
}
var winner = result(a,b); // we have a winner!!!
if (winner==1) {alert("Player A wins with"+outcomeType(a)+"against"+outcomeType(b););} // the alert should be like: Player A wins with "scissors" against "paper"
else if (winner==0) {alert("Draw with"+outcomeType(a););} //draw
else {alert("Player B wins with"+outcomeType(b)+"against"+outcomeType(a););} //player B winning alet
}
感谢任何帮助
答案 0 :(得分：11)
我认为给你自己回答这个问题的工具更重要，而不是发布一些工作代码。你现在如何使用javascript？
我强烈建议使用firefox + firebug，学会使用它，你可以在几分钟内自行修复。
它指出代码中的所有3个语法错误，然后运行，但总是返回相同的值。在游戏功能中添加断点并快速逐步显示，随机功能被破坏，并且没有返回。
答案 1 :(得分：5)
一个相当严重的问题是你的“randomNumber”例程实际上没有return任何事情。最后一行应该（可能）是
return Math.round(randomNo); // round it to integer
答案 2 :(得分：2)
你有没有在游戏开头（）和游戏结束（）结束时发出警报，以便你知道这样做是否正常？
另外我认为你在game（）块中有一些额外的分号：我认为每个警报的参数列表中都不应该有分号。
最后，randomNumber（）需要在最后一行返回。你正在计算最终价值，但没有用它做任何事情！
答案 3 :(得分：2)
你有很多错误。从一开始，你从不打电话给游戏，所以你的任何一个功能都没有执行其次，调用其中的函数的警报无效。将outcomeType（a）;）;}更改为outcomeType（a））;}
这应该让您的警报正常工作，以便您可以开始调试您的逻辑。
答案 4 :(得分：2)
标记错误..
固定：
<script>
function randomNumber(x,y){ //returns a random number from an interval given
var z;
if (x>y) {z=x; x=y; y=z;} // turns the interval upside down if the numbers of the interval are entered in unconsecutive order
else if(x==y) {return x;} //*REMOVED INCORRECT BREAK*if there's no interval but two same digits return the number entered
var randomNo = (y-x)*Math.random() + x; // the random value itself in float type
Math.round(randomNo); // round it to integer
return(randomNo );
}
function outcomeType(value){ //gives the type of hand-symbol in game for each player according to the random No given
var outcome;
if (value==1 || value==4){outcome="rock"} //value 1 or 4 gives rock, same way with other two...
else if(value==2) {outcome="paper"}
else {outcome="scissors"}
return outcome;
}
function result(x,y){ // compares the numbers so that a winner is decided
if(x>y){return 1;} //player A wins
else if(x==y){return 0;} //draw
else {return 2} //player B wins
}
function game(){
var a=randomNumber(1,3); // random number for player A
var b=randomNumber(1,3);// random number for player B
if(a!=2 && b!=2 && a!=b){ //the case rock-scissors, rocks from 1 beecomes 4 in order to beat in result()
if(a>b){b=4}
else{a=4}
}
var winner = result(a,b); // we have a winner!!!
if (winner==1) {alert("Player A wins with"+outcomeType(a)+"against"+outcomeType(b));} //*REMOVED EXTRA SEMICOLON* the alert should be like: Player A wins with "scissors" against "paper"
else if (winner==0) {alert("Draw with"+outcomeType(a));} //*REMOVED EXTRA SEMICOLON*draw
else {alert("Player B wins with"+outcomeType(b)+"against"+outcomeType(a));} //*REMOVED EXTRA SEMICOLON*player B winning alet
}
game();
</script>
答案 5 :(得分：2)
我对代码进行了抨击，这就是我最终的结果：
function randomNumber(x,y) {
return Math.floor((Math.abs(y - x) + 1) * Math.random()) + Math.min(x, y);
}
function game() {
var outcomeType = ["rock", "paper", "scissors"];
var a = randomNumber(0,2);
var b = randomNumber(0,2);
switch ((3 + a - b) % 3) {
case 1: alert("Player A wins with " + outcomeType[a] + " against " + outcomeType[b]); break;
case 2: alert("Player B wins with " + outcomeType[b] + " against " + outcomeType[a]); break;
default: alert("Draw with " + outcomeType[a]); break;
}
}
我提供代码来展示解决游戏中某些事情的一些不同方法。有些不太明显或不太可读，所以它绝不是理想代码的一个例子。 ：）
重要提示：请注意，随机函数使用Math.floor和abs(y - x) + 1来获得随机分布。如果您使用Math.random，获得最低或最高数字的机会将是应有的一半。
答案 6 :(得分：0)
<form name="frmRPC">
Rock: <input type="radio" name="RPC" value="Rock" />
</br>
Paper: <input type="radio" name="RPC" value="Paper" />
</br>
Scissors: <input type="radio" name="RPC" value="Scissors" />
</br>
<input onclick="Play();" type="button" value="Play" name="btnPlay" />
</form>
<script>
function Play()
{
var ComputerChoice = {"Rock":1 , "Paper":2 , "Scissors":3 };
Object.freeze(ComputerChoice);
var userChoice = "";
var computerChoice = Math.floor((Math.random() * 3) + 1);
for (i = 0; i < document.frmRPC.RPC.length; i++)
{
if (document.frmRPC.RPC[i].checked)
{
var userChoice = document.frmRPC.RPC[i].value;
break;
}
}
if (userChoice === "")
{
alert("Please select a choice first");
}
else
{
// alert(userChoice);
switch(userChoice)
{
case 'Rock':
switch(computerChoice)
{
case ComputerChoice.Rock:
alert("You Chose: Rock - Computer chose: Rock - Tie");
break;
case ComputerChoice.Paper:
alert("You Chose: Rock - Computer chose: Paper - You Loose");
break;
case ComputerChoice.Scissors:
alert("You Chose: Rock - Computer chose: Scissors - You Win");
break;
}
break;
case 'Paper':
switch(computerChoice)
{
case ComputerChoice.Rock:
alert("You Chose: Paper - Computer chose: Rock - You Win");
break;
case ComputerChoice.Paper:
alert("You Chose: Paper - Computer chose: Paper - Tie");
break;
case ComputerChoice.Scissors:
alert("You Chose: Paper - Computer chose: Scissors - You Loose");
break;
}
break;
case 'Scissors':
switch(computerChoice)
{
case ComputerChoice.Rock:
alert("You Chose: Scissors - Computer chose: Rock - You Loose");
break;
case ComputerChoice.Paper:
alert("You Chose: Scissors - Computer chose: Paper - You Win");
break;
case ComputerChoice.Scissors:
alert("You Chose: Scissors - Computer chose: Scissors - Tie");
break;
}
break;
}
}
}
</script>
答案 7 :(得分：0)
您可以使用Math.random()。这样，计算机就会生成1到0之间的随机数。