Question

当我单击任意2个单选按钮时，文本会重叠。我希望if else条件分开运行。这意味着当我单击更高的单选按钮时，它会检查playertotal是否高于computertotal并写入结果。与下方单选按钮相同。

这属于较长的代码：

function button1()
{
    // Checks if it's the players turn
    if(playerturn==true)
    {
        // Generates eyes for the dice
        var eyes3=Math.floor(Math.random()*6)+ 1;
        var eyes4=Math.floor(Math.random()*6)+ 1;
        //Shows the eyes
        showEyes(eyes3, 325);
        showEyes(eyes4, 450);

        computerturn=true;
        playerturn=false;

        playerTotal = eyes3+eyes4;
        //Checks if player has won
        if (higher=1 && playerTotal > computerTotal) 
        {
            pen.font = '20pt Calibri';
            pen.fillText('You have won',300,250);
        }
        else if (higher=1 && playerTotal < computerTotal) 
        {
            pen.font = '20pt Calibri';
            pen.fillText('You have lost',300,250);
        }

        if (lower=1 && playerTotal < computerTotal) 
        {
            pen.font = '20pt Calibri';
            pen.fillText('You have won!',300,250);
        }
        else if (lower=1 && playerTotal > computerTotal) 
        {
            pen.font = '20pt Calibri';
            pen.fillText('You have lost',300,250);
        }
    }
}

function higherRadioButton()
{
    higher = 1
    lower = 0
}

function lowerRadioButton()
{
    lower = 1
    higher = 0
}

谢谢。

Answer 1

在JavaScript中，比较运算符为==，而不是=。您的代码应如下所示：

if (higher == 1 && playerTotal > computerTotal) 
{
    //...
}

所有其他陈述都一样。

为了避免将来出现此类问题，请始终将数字放在左侧：

if (1 == higher && playerTotal > computerTotal) 
{
    //...
}

这样一来，如果你忘了一个“=”，你就会得到错误而不是错误的结果。

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