[英]Basic JavaScript Rock-Paper-Scissors game not working properly
我正在使用的Rock-Paper-Scissors基本JavaScript版本需要一些帮助。 我今天才开始学习,如果可能的话,我希望代码尽可能完整。
我遇到的主要问题是循环。 尽管我将“再次”设置为“否”(通过提示),它仍然继续。 另外,计算机似乎总是选择Rock ...我感觉自己只是缺少一些简单的东西:
<html>
<script type="text/javascript">
var myChoice = "";
var compChoice = "";
var again;
while (again = "yes")
{
myChoice = prompt("Do you choose rock, paper or scissors?");
compChoice = Math.random();
if (compChoice < 0.33)
{
compChoice = "rock";
}
else if(compChoice < 0.67)
{
compChoice = "paper";
}
else
{
compChoice = "scissors";
}
if (compChoice = myChoice)
{
alert("It's a tie!");
again = prompt("Would you like to play again?(yes/no)");
}
else if (compChoice = "rock")
{
if(myChoice = "scissors")
{
alert("You lose!");
again = prompt("Would you like to play again?(yes/no)");
}
else if (myChoice = "paper")
{
alert("You win!");
again = prompt("Would you like to play again?(yes/no)");
}
}
else if (compChoice = "paper")
{
if (myChoice = "rock")
{
alert("You lose!");
again = prompt("Would you like to play again?(yes/no)");
}
else if (myChoice = "scissors")
{
alert("You win!");
again = prompt("Would you like to play again?(yes/no)");
}
}
else if (compChoice = "scissors")
{
if (myChoice = "rock")
{
alert("You win!");
again = prompt("Would you like to play again?(yes/no)");
}
else if (myChoice = "paper")
{
alert("You lose!");
again = prompt("Would you like to play again?(yes/no)");
}
}
};
</script>
</html>
您在while语句中使用=
而不是==
,并且在所有if语句中也使用相同
=
是赋值运算符,而==
是比较运算符
var myChoice = "";
var compChoice = "";
var again;
do
{
myChoice = prompt("Do you choose rock, paper or scissors?");
compChoice = Math.random();
if (compChoice < 0.33)
{
compChoice == "rock";
}
else if(compChoice < 0.67)
{
compChoice = "paper";
}
else
{
compChoice == "scissors";
}
if (compChoice == myChoice)
{
alert("It's a tie!");
}
else if (compChoice == "rock")
{
if(myChoice == "scissors")
{
alert("You lose!");
}
else if (myChoice == "paper")
{
alert("You win!");
}
}
else if (compChoice == "paper")
{
if (myChoice == "rock")
{
alert("You lose!");
}
else if (myChoice == "scissors")
{
alert("You win!");
}
}
else if (compChoice == "scissors")
{
if (myChoice == "rock")
{
alert("You win!");
}
else if (myChoice == "paper")
{
alert("You lose!");
}
}
again = prompt("Would you like to play again?(yes/no)");
}while (again == "yes");
演示: 小提琴
一个主要问题是您要分配值,而不是在多个位置比较值。
a = 2 // assigns a to value 2, and evaluates to true
a == 2 // compares a to 2, only evaluates to true if a has value 2
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