如何使用按钮来更改javascript代码的样式？

2024-05-17 • 问答

在要求我们为12月创建日历并使用变量的前几天，当天将以彩色显示。工作日将采用其他颜色。但是，我正在努力创建按钮，该按钮将改变当天的第二天以具有与使用CSS更改字体或颜色不同的样式。还有一个按钮，它将改变当前日期的星期，使其样式不同于当前日期的第二天。这是代码：

<!DOCTYPE html>
<html lang="en-us">
<head>
    <title>22plazaa-Unit 3 Day 7</title>
    <meta charset="UTF-8">
    <style>
        * {font-family: "Times New Roman",sans-serif;}
        table,th,td {
            border: 3px solid pink;
            border-collapse: collapse;
        }
        table {
            margin:auto;
        }
        td {
            width: 10%;
            padding: 20px;
            font-size: 24pt;
            text-align: center;
        }
        h1 {text-align: center}

        #empty {background-color:azure}
    </style>
</head>
<body>
    <h1>Unit 3 Day 7</h1>
    <table>
        <tr>
            <th id="sun">Sunday</th>
            <th id="mon">Monday</th>
            <th id="tue">Tuesday</th>
            <th id="wed">Wednesday</th>
            <th id="thu">Thursday</th>
            <th id="fri">Friday</th>
            <th id="sat">Saturday</th>
        </tr>
        <tr>
            <td id="d1">1</td>
            <td id="d2">2</td>
            <td id="d3">3</td>
            <td id="d4">4</td>
            <td id="d5">5</td>
            <td id="d6">6</td>
            <td id="d7">7</td>
        </tr>
        <tr>
            <td id="d8">8</td>
            <td id="d9">9</td>
            <td id="d10">10</td>
            <td id="d11">11</td>
            <td id="d12">12</td>
            <td id="d13">13</td>
            <td id="d14">14</td>
        </tr>
        <tr>
            <td id="d15">15</td>
            <td id="d16">16</td>
            <td id="d17">17</td>
            <td id="d18">18</td>
            <td id="d19">19</td>
            <td id="d20">20</td>
            <td id="d21">21</td>
        </tr>
        <tr>
            <td id="d22">22</td>
            <td id="d23">23</td>
            <td id="d24">24</td>
            <td id="d25">25</td>
            <td id="d26">26</td>
            <td id="d27">27</td>
            <td id="d28">28</td>
        </tr>
        <tr>
            <td id="d29">29</td>
            <td id="d30">30</td>
            <td id="d31">31</td>
            <td id="end" colspan="4"></td>
        </tr>
    </table>
    <script>
        var today = new Date(); 
        switch (today.getDay()) {
            case 0:
                document.getElementById("sun").style.backgroundColor = "lightblue";
                break;
            case 1:
                document.getElementById("mon").style.backgroundColor = "lightblue";
                break;
            case 2:
                document.getElementById("tue").style.backgroundColor = "lightblue";
                break;
            case 3:
                document.getElementById("wed").style.backgroundColor = "lightblue";
                break;
            case 4:
                document.getElementById("thu").style.backgroundColor = "lightblue";
                break;
            case 5:
                document.getElementById("fri").style.backgroundColor = "lightblue";
                break;
            case 6:
                document.getElementById("sat").style.backgroundColor = "lightblue";
                break;
        }
       var date = document.getElementById("d" + today.getDate());
        date.style.color = "white";
        date.style.backgroundColor = "salmon";


    </script>
</body>
</html>

答案是每次调用click事件时我都会简单地更改样式，我制作了一个代码片段以显示运行情况。

我不确定您尝试用不同的样式来表达什么意思。

var nday = document.querySelector('.nday');
var nweek = document.querySelector('.nweek');

nday.addEventListener('click',()=>{
  document.getElementById(Day[today.getDay()]).style.backgroundColor = "white"
  let date = document.getElementById("d" + today.getDate());
  date.style.color = "black";
  date.style.backgroundColor = "white";

  today.setDate(today.getDate() + 1)
  document.getElementById(Day[today.getDay()]).style.backgroundColor = "lightBlue"
  date = document.getElementById("d" + today.getDate());
  date.style.color = "white";
  date.style.backgroundColor = "salmon";

})



nweek.addEventListener('click',()=>{
document.getElementById(Day[today.getDay()]).style.backgroundColor = "white"
let date = document.getElementById("d" + today.getDate());
date.style.color = "black";
date.style.backgroundColor = "white";


  today.setDate(today.getDate() + 7)
  document.getElementById(Day[today.getDay()]).style.backgroundColor = "lightBlue"
  date = document.getElementById("d" + today.getDate());
  date.style.color = "white";
  date.style.backgroundColor = "salmon";
})

var Day = ["sun","mon","tue","wed","thu","fri","sat"]
var today = new Date();
document.getElementById(Day[today.getDay()]).style.backgroundColor = "lightBlue"


var date = document.getElementById("d" + today.getDate());
date.style.color = "white";
date.style.backgroundColor = "salmon";

* {font-family: "Times New Roman",sans-serif;}
        table,th,td {
            border: 3px solid pink;
            border-collapse: collapse;
        }
        table {
            margin:auto;
        }
        td {
            width: 10%;
            padding: 20px;
            font-size: 24pt;
            text-align: center;
        }
        h1 {text-align: center}

        #empty {background-color:azure}

<!DOCTYPE html>
<html lang="en-us">
<head>
    <title>22plazaa-Unit 3 Day 7</title>
    <meta charset="UTF-8">

</head>
<body>
    <h1>Unit 3 Day 7</h1>
    <button class = "nday">Next Day</button>
    <button class = "nweek">Next Week</button>

    <table>
        <tr>
            <th id="sun">Sunday</th>
            <th id="mon">Monday</th>
            <th id="tue">Tuesday</th>
            <th id="wed">Wednesday</th>
            <th id="thu">Thursday</th>
            <th id="fri">Friday</th>
            <th id="sat">Saturday</th>
        </tr>
        <tr>
            <td id="d1">1</td>
            <td id="d2">2</td>
            <td id="d3">3</td>
            <td id="d4">4</td>
            <td id="d5">5</td>
            <td id="d6">6</td>
            <td id="d7">7</td>
        </tr>
        <tr>
            <td id="d8">8</td>
            <td id="d9">9</td>
            <td id="d10">10</td>
            <td id="d11">11</td>
            <td id="d12">12</td>
            <td id="d13">13</td>
            <td id="d14">14</td>
        </tr>
        <tr>
            <td id="d15">15</td>
            <td id="d16">16</td>
            <td id="d17">17</td>
            <td id="d18">18</td>
            <td id="d19">19</td>
            <td id="d20">20</td>
            <td id="d21">21</td>
        </tr>
        <tr>
            <td id="d22">22</td>
            <td id="d23">23</td>
            <td id="d24">24</td>
            <td id="d25">25</td>
            <td id="d26">26</td>
            <td id="d27">27</td>
            <td id="d28">28</td>
        </tr>
        <tr>
            <td id="d29">29</td>
            <td id="d30">30</td>
            <td id="d31">31</td>
            <td id="end" colspan="4"></td>
        </tr>
    </table>
</body>
</html>

如何使用按钮来更改javascript代码的样式？

pibenxiai7 回答：如何使用按钮来更改javascript代码的样式？

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